Galaxy Note 4 to Feature a New Ultraviolet Sensor(UV Sensor) for Special Tasks

The Samsung Galaxy Note 4 could feature a new ultraviolet sensor (UV sensor) that will be used to determine the UV index.

The component will be able to inform the smartphone user of when it reaches harmful levels and will make recommendations based off of it. This includes telling them to put sun screen on.

The functionality will be integrated into the S Health app, however, the readings will only come when the user holds the device at "over 60 degree angle of elevation towards the sun against the back of the sensor."

There is no word on where the sensor will be located on the Note 4 at this time.

The Note 4 might also feature a retina scanner when it launches, according to a recent post by Samsung. The company put up a teaser of a phablet like device which could be the Note 4 on its ExynosTwitter account last week and hints at it coming with some kind of Eye scanner.

"Security can be improved using features unique to us," wrote the company. "That's what we envision. What would you use?"

The tag line listed in the top of the teaser reads "Unlock the Future." This points to the scanner being the main tool used to unlock the phone. Samsung also has a track record with adding new features to its devices related to the eye as it released the Smart Screen scrolling and pausing on the Galaxy S4 last year.

The Galaxy Note 4 is expected to launch sometime in the fall of this year. It will join the Galaxy S5 for Samsung's 2014 line-up and will compete with Apple's rumored larger iPhone model.

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Researchers 'bake' nanostructured UV-sensors in the oven

 Placed in fire detectors and water treatment units UV sensors can save lives; also in many areas of industry and environment the demand for these devices is rising steadily. Scientists of Kiel University have been able to ”bake” nanostructures within seconds, in order to fabricate very fast UV-sensors. This new technique totally diminishes the need to use sophisticated equipments and toxic chemicals. It will therefore be highly interesting for companies. The scientists have published their results today (November 19) in Advanced Materials ("Rapid Fabrication Technique for Interpenetrated ZnO Nanotetrapod Networks for Fast UV Sensors").
When building a sensor device from nanostructures, one of the biggest challenges is how to interconnect them into electrical contacts in chips because of their extremely small dimensions in nanoscale range, says Dawit Gedamu, the first author of the paper. Most of the existing synthesis methods, such as Chemical Vapour Deposition or Vapor-Liquid-Solid (VLS) growth allow synthesis of different nanostructures only under specific conditions. For instance, the presence of catalytic particles, particular substrates, complex temperature, atmospheric conditions and many more factors must be met. Furthermore, to integrate the synthesized nanostructures with these techniques in the chips requires another very sophisticated step. There are silicon or gallium nitride based UV detectors already available in the market but they lack a certain level of selectivity and also they cannot function in harsh environments. High production costs, multistep processes and the requirement of specific operating conditions limit the field of application for these sensors.
“Extremely promising” for various applications are the sensors that are based on zinc oxide, says Dr. Yogendra Kumar Mishra, scientific assistant with the work group “Functional Nanomaterials” at Kiel University and main author of the study. “Nanostructures made from zinc oxide are highly interesting for multifunctional applications, due to their sensibility to UV light and their electrical and mechanical properties”, says Mishra. Also, the material is relatively inexpensive and easy to synthesize. Since up to a certain level zinc is necessary for human organisms, these zinc oxide nano-microstructures could be of potential interest for biomedical engineering.
The scientists have fabricated a network of interconnected zinc oxide nano-tetrapods as a bridge between electrodes on a chip by a new single step flame transport synthesis process: In a simple oven or airbrush gun-type burner it only needs high temperature to convert zinc microparticles into nano-micro tetrapods. This process takes place in normal air environment and the necessary amount of oxygen is regulated by the flame itself. “This burner-flame transport synthesis method allows us to grow the zinc oxide nano-microstructures directly on the chip – and that only takes a few seconds, it is just a matter of driving the chip through the flame while the nano tetrapods assemble themselves onto it!” Mishra is excited to report. The high temperature of the flame ensures contacts of good quality between chip and the nanostructures, which is highly desirable for a better performance of the device.
The result: the sensor produced by the Kiel University scientists reacts to UV light within milliseconds of its exposure. Additionally, it also works in rather rough environments. These simple and inexpensive manufacturing conditions as well as the usage of pure zinc microparticles make this production method at the laboratories at Kiel University highly attractive for manufacturing companies. “We already had regional companies inquiring about our work. It shows that our basic research can be transferred into concrete applications”, Professor Rainer Adelung, head of the research team, explains. The next logical step for the material scientists is therefore to find the ways to produce these nano-tetrapods on a larger scale.
One curious fact: Zinc oxide nanostructures started their career as waste from conventional VLS growth experiments for zinc oxide. One day, Yogendra Mishra examined the crystals that looked like artificial snow under the microscope: “Their particular intertwining structure and their ability to detect light implied an enormous potential”, says the scientist, who was holding a fellowship from the Alexander von Humboldt Foundation while developing the new method in the years following this discovery. To successfully produce the nano-tetrapods, the right combination of temperature and mixing ratio of zinc particles and sacrificial polymer as well as other parameters had to be investigated.

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Silicon Labs digital UV sensors win UBM Canon ACE Award

Silicon Labs announced that its Si1132 and Si114x ultraviolet (UV) index sensor family has received an award in the “sensors” category at the EE Times and EDN 2015 UBM Canon ACE Awards.

The ACE Awards program recognizes the individuals and companies behind today’s most innovative technologies and products.

The winners were announced at an awards ceremony held earlier this week at the Santa Clara Convention Center, during the Embedded Systems Conference Silicon Valley.

“Winning the prestigious UBM Canon ACE Award validates the breakthrough innovation, versatility and value of our Si1132/4x UV sensors in biometrics applications for wearables,” said Ross Sabolcik, vice president and general manager of Silicon Labs’ Analog’s power and sensor products. “Silicon Labs has won the ACE Award in the sensors category two years in a row, underscoring the strength of our optical and environmental sensor portfolio for the IoT.”

As the industry’s first single-chip, digital UV index sensor IC solution designed to monitor UV sun exposure, heart/pulse rate and blood oximetry, Silicon Labs’ Si1132/4x sensor products provide efficient proximity/gesture control for smartphone and wearables.

The Si1132 and Si114x sensor ICs are designed for activity-tracking wrist and arm bands, smartwatches and smartphones.

Aside from enabling UV index sensing, the devices provide ambient light and infrared (IR) proximity sensing capabilities for health and fitness applications.

The Si1132/4x sensors meet the growing demand for UV sensing in wearable/handset products with its integrated features that help protect people from dangerous UV light exposure.

A panel of EE Times and EDN editors selected three finalists in each category from the multiple entries, based on key criteria. A panel of independent judges then selected the winners.

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Samsung to add (ultraviolet) UV sensor to Galaxy Note 4

Samsung has been focusing on health in its mobile devices for the last few years. With the Galaxy S 4, the company first introduced S Health for fitness and diet tracking, though it was pretty basic at the time. With the Galaxy S5, the app has significantly improved and a heart rate sensor was added to the device. This new sensor furthered the health theme, and it seems like Samsung is going to take it even further later this year.
According to this rumor, the Samsung Galaxy Note 4 will feature an ultraviolet - UV sensor. And surprisingly, it sounds somewhat useful. This sensor will be used to measure UV radiation from the sun, letting you know how dangerous UV radiation is at that point. It’ll use five UV index levels, from low to extreme.
As many of you know, UV radiation is pretty dangerous. If you’re out in extreme levels of UV, your skin can start burning within minutes. The device will warn you when you’ll need extra protection from the sun and when to worry less.
On one hand, this actually seems pretty useful because many people ignore UV radiation as a health risk. This is especially true on cloudy or wintry days, where UV radiation is still dangerous. On the other hand, it seems a little extreme to be worried about the sun so much that you use your phone to test UV levels.
If the next Galaxy Note device actually does feature this UV sensor, it would definitely be a useful addition to those who want it. And if you don’t want it, it’s as simple as not using it (much like the heart rate monitor on the Galaxy S5 is easy to ignore). Plus, Samsung might add extra functionality to the sensor. Do you like this idea?

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Samsung Galaxy Note 4 Could Arrive Sporting UV sensor with 500 Milliseconds Tracking Speed

Samsung next biggest phablet offering in the Galaxy Note series of handsets is still pending. However, going by the kind of rumors and leaks we are seeing for it, it won't be long before the device is made final for fans.

And there are new rumors now to look ahead to. According to reports, the next phablet in the series, probably Samsung Galaxy Note 4, is said to arrive with a front facing UV sensor that will offer tracking speed of 500 milliseconds.

First in line to grab the new information was Sammobile with its own source close to the matter. It writes: "Our source had also told us that the Galaxy Note 4 will pack a UV sensor on the front, a feature never before seen on a smartphone, and today we've got some more information on this sensor." "Rather, it's only a tiny detail that we've learned, though it is something that should be filed under the rumor category - apparently, this UV sensor will be able to track UV rays/radiation every 500 milliseconds."

Sadly enough, that was the only bit of information that was revealed for the handset via the source. Moreover, there's no saying that what this UV sensor will be used for. Maybe it could "allow for better auto brightness when the phone is used outdoors, helping Samsung's continued attempts to improve the outdoor visibility of its Super AMOLED display."

The Samsung Galaxy Note 4 is currently set for a probable September release and is expected to be priced even more than the recently released Samsung Galaxy S5 handset.

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Operation at 700°C of 6H-SiC UV Sensor Fabricated Using N+ Implantation

We have realized, for the first time, a UV sensor that operates at temperatures up to 700°C by using N⁺ implantation into 6H-SiC.

The photocurrent of the sensor increased with temperature, and at 400°C and 700°C, the photocurrent is approximately double and triple that at room temperature (RT), respectively.

It was clarified that the temperature dependence of the photocurrent reveals the characteristics of absorption particular to indirect transition, and also the minority carrier diffusion length. Dark current increased rapidly at temperatures exceeding 450°C.

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Samsung Galaxy Note 4 specs and features include UV sensor, retina scanner

Samsung Galaxy Note 4 features are reported to include a UV sensor and retina scanner.
A new report from SamMobile claimed that aside from the heart rate and fingerprint sensor that will obviously arrive in the next-gen phablet, UV sensor and retina scanner will also join the list of new features in the Galaxy Note 4. This means that Galaxy Note 4 will be the first smartphone to pack such a feature.
The UV sensor is rumored to be included in the S Health application coming in the phablet. The Galaxy Note 4 is also expected to ship with a retina scanner for security. Samsung smartphones initially packed a fingerprint sensor to address some of the security problems faced by the users in using the smartphone.
The new UV sensor will measure the sun's UV radiation when the back of the sensor is tilted at a 60 degree angle of elevation towards the sun. The UV measurement will help prevent users from damaging their skin from the sun and guide users with the current UV index level, according to SamMobile.
Aside from the aforementioned features, Samsung Galaxy Note 4 is also rumored to pack a quadHD screen display with 2,560 x 1,440 pixel resolution, 64-bit processor, Android 4.4.3 Kitkat operating system, 3GB RAM, and 3 megapixel front-facing camera.
The handset will be available in two variants packing varying processors. Just like the previous Galaxy Note phablets, the international variant will come with Exynos chipset and the unit released in the US will pack the Qualcomm's Snapdragon processor.
The phablet is speculated to make an appearance at this year's IFA event in Berlin in September. This is backed up by reports that the Galaxy Note 4 will enter mass production this month to meet the time for release. Other reports suggested that Samsung Galaxy Note 4 will be released alongside other Samsung devices such as Gear Live, Gear Glass, and Samsung Galaxy F or also dubbed as the Galaxy S5 Prime.

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New report available: North America Ambient Light, IR, UV Sensors Industry

The North America Ambient Light, IR, UV Sensors Industry 2016 Market Research Report is a professional and in-depth study on the current state of the Ambient Light, IR, UV Sensors industry.
The report provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. The Ambient Light, IR, UV Sensors market analysis is provided for the North America markets including development trends, competitive landscape analysis, and key regions development status.
Development policies and plans are discussed as well as manufacturing processes and Bill of Materials cost structures are also analyzed. This report also states import/export consumption, supply and demand Figures, cost, price, revenue and gross margins.
The report focuses on North America major leading industry players providing information such as company profiles, product picture and specification, capacity, production, price, cost, revenue and contact information. Upstream raw materials and equipment and downstream demand analysis is also carried out. The Ambient Light, IR, UV Sensors industry development trends and marketing channels are analyzed. Finally the feasibility of new investment projects are assessed and overall research conclusions offered.
With 145 tables and figures the report provides key statistics on the state of the industry and is a valuable source of guidance and direction for companies and individuals interested in the market.
TABLE OF CONTENT:
1 Industry Overview
1.1 Definition and Specifications of Ambient Light, IR, UV Sensors
1.2 Classification of Ambient Light, IR, UV Sensors
1.3 Applications of Ambient Light, IR, UV Sensors
1.4 Industry Chain Structure of Ambient Light, IR, UV Sensors
1.5 Industry Overview of Ambient Light, IR, UV Sensors
1.6 Industry Policy Analysis of Ambient Light, IR, UV Sensors
1.7 Industry News Analysis of Ambient Light, IR, UV Sensors
2 Manufacturing Cost Structure Analysis of Ambient Light, IR, UV Sensors
2.1 Bill of Materials (BOM) of Ambient Light, IR, UV Sensors
2.2 BOM Price Analysis of Ambient Light, IR, UV Sensors
2.3 Labor Cost Analysis of Ambient Light, IR, UV Sensors
2.4 Depreciation Cost Analysis of Ambient Light, IR, UV Sensors
2.5 Manufacturing Cost Structure Analysis of Ambient Light, IR, UV Sensors
2.6 Manufacturing Process Analysis of Ambient Light, IR, UV Sensors
2.7 North America Price, Cost and Gross of Ambient Light, IR, UV Sensors 2011-2016
3 Technical Data and Manufacturing Plants Analysis
3.1 Capacity and Commercial Production Date of North America Key Manufacturers in 2015
3.2 Manufacturing Plants Distribution of North America Key Ambient Light, IR, UV Sensors Manufacturers in 2015
3.3 R&D Status and Technology Source of North America Ambient Light, IR, UV Sensors Key Manufacturers in 2015
3.4 Raw Materials Sources Analysis of North America Ambient Light, IR, UV Sensors Key Manufacturers in 2015
4 Production Analysis of Ambient Light, IR, UV Sensors by Regions, Type, and Applications
4.1 North America Production of Ambient Light, IR, UV Sensors by Regions 2011-2016
4.2 North America Production of Ambient Light, IR, UV Sensors by Type 2011-2016
4.3 North America Sales of Ambient Light, IR, UV Sensors by Applications 2011-2016
4.4 Price Analysis of North America Ambient Light, IR, UV Sensors Key Manufacturers in 2015
4.5 North America Capacity, Production, Import, Export, Sales, Price, Cost and Revenue of Ambient Light, IR, UV Sensors 2011-2016
5 Consumption Volume and Consumption Value Analysis of Ambient Light, IR, UV Sensors by Regions
5.1 North America Consumption Volume of Ambient Light, IR, UV Sensors by Regions 2011-2016
5.2 North America Consumption Value of Ambient Light, IR, UV Sensors by Regions 2011-2016
5.3 North America Consumption Price Analysis of Ambient Light, IR, UV Sensors by Regions 2011-2016

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The wrist with UV sensor lets you know when to reapply sunscreen

If you spend much time outdoors in the summer, then you doubtless know how important it is to wear sunscreen. That said, you probably also know that just applying it once before you first go outside isn’t good enough – for sufficient protection from the sun’s ultraviolet rays, periodic reapplications are also necessary. The UVeBand is a new wearable device, that’s designed to let you know when it’s time for those reapplications.
First of all, you might be thinking that you could just use the timer on your watch or phone as a reminder. Well, you could, although many people probably just wouldn’t bother. Additionally, the UVeBand isn’t simply a timer – it actually keeps track of the intensity of UVA and UVB rays, so its alert time will be recalculated if the sun goes behind the clouds, or if you move to a shadier area.
The device itself is a silicone-coated water-resistant band, that the user simply slaps onto their wrist. The band’s capacitive switching technology turns the device on upon contact with the skin – it also turns the band off again (and resets it) when it’s removed.
Once activated, the UVeBand’s integrated UV sensor measures incoming ultraviolet radiation via a small window, once every three seconds. An onboard processor keeps track of the cumulative exposure.
Based on a formula “developed by a leading dermatologist in the USA” (and in compliance with guidelines from the World Health Organization and World Meteorological Organization), the wristband alerts the user when it’s time for them to apply more sunscreen, by vibrating for two minutes. The formula assumes that a sunscreen of SPF15 or higher is being used.
The wrist band also vibrates briefly once every 15 minutes, just to confirm that’s it’s working. Users don’t need to worry about recharging or replacing any batteries, as the device is powered by the sunlight that it’s monitoring.
UVeBand’s designers currently have a number of working prototypes, and are now raising production funds on Kickstarter. A pledge of £8 (US$12) will get you one, when and if the funding goal is reached.

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UV sensor will help prevent skin cancer

Australian researchers have developed a new wearable sensor that tells you when you have been exposed to too much ultraviolet sunlight.
The simple paper-based UV sensor, to be unveiled at this week's International Nanomedicine Conference in Sydney, changes colour in the sun and could provide an affordable tool to help prevent deadly skin cancers.
Chemists from the Australian Centre for NanoMedicine at the University of NSW, who designed the the low-cost sensor, say it can be worn like stickers on the skin and uses food dyes that change colour after sun exposure.
More importantly the stick-on patches can be tuned to suit individual skin types.
Developer Parisa Sowti Khiabani from UNSW says they wanted to design technology that could help reduce Australia's high incidence of skin cancer.
"Australia has one of the highest incidence of skin cancer in the world, and too much exposure to ultraviolet light is the primary cause," says Mr Khiabani.
According to UNSW Professor Justin Gooding, the technology is ready for the commercial market.
"Its so simple it could be fabricated at home using an inkjet printer and tested in your backyard," he said.
Some of the world's top scientists and clinicians will be in Sydney from Monday to discuss the latest developments in nanomedicine, which is focused on developing technologies with specific medical applications aimed at finding better ways to monitor and treat diseases.
Among the speakers at this year's nanomedicine conference will be former Australian of the Year and plastic surgeon, Professor Fiona Wood who worked with survivors of the Bali bombings.
Prof Wood will discuss ways that nanotechnology can be used to engineer tissue and treat serious burns and other skin injuries.

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Samsung's Galaxy Note 4 might have an ultraviolet sensor(UV sensor), and it might actually be useful

It has already been confirmed by Samsung that the Galaxy Note 4 will have an ultraviolet (UV) sensor, but there wasn't much information available. Now, according to a report over on SamMobile, we have some idea as to what consumers can expect to see from the built-in functionality. The new component will integrate itself within Samsung's S Health app, providing yet more personal data for the owner to take advantage of.
Is it gimmicky? Sure. It's Samsung, the home of the smartphone heart-rate monitor, but it is cool at the same time.
So how exactly does the UV sensor work? It measures the sun's ultraviolet radiation and prevents owners from potentially damaging their skin, increasing the risk of skin cancer. This is possible thanks to recommended guidance provided, based on the current UV index level measured at that point in time. All that's required to measure the radiation is to maintain a 60 degree angle of elevation towards the sun against the back of the sensor.
We noted that it's a useful and rather cool feature simply because people are generally fairly ignorant when it comes to keeping safe in the sun. To help keep everyone safe from being exposed to too much UV rays, Samsung will provide a full explanation on each level of UV index level, as well as some cool truths and false statements in the app.

Here's the information that will allegedly be included in the app, as outlined by SamMobile:

The truths:

·   A tan results from your body defending itself against further damage from UV radiation.

·   A dark tan on white skin offers only limited protection equivalent to an SPF of about 4.

·   Up to 80% of solar UV radiation can penetrate light cloud cover. Haze in the atmosphere can even increase UV radiation exposure.

·   Water offers only minimal protection from UV radiation, and reflection from water can enhance your UV radiation exposure.

·   UV radiation is generally lower during the winter months, but snow reflection can double your overall exposure, especially at high altitude. Pay particular attention in early spring when temperatures are low but sun's rays are unexpectedly strong.

·   Sunscreens should not be used to increase sun exposure time but to increase protection during unavoidable exposure. The protection they afford depends critically on their correct application.

·   UV radiation exposure is cumulative during the day.

·   Sunburn is caused by UV radiation which cannot be felt. The heating effect is caused by the sun's infrared radiation and not by UV radiation

The statements below are false:

·   A suntan is healthy.

·   A tan protects you from the sun.

·   You can't get sunburnt on a cloudy day.

·   You can't get sunburnt while in the water.

·   UV radiation during the winter is not dangerous.

·   Sunscreens protect me so I can sunbathe much longer.

·   If you take regular breaks during sunbathing you won't get sunburnt.

·   If you don't fell the hot rays of the sun you won't get sunburnt.

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More graphene! This time in a broadband photosensor

Singapore--Cameras fitted with a new graphene-based sensor developed at Nanyang Technological University (NTU) will soon be able to take clear and sharp photos in dim conditions, according to NTU.

The sensor is believed to be the first to be able to detect broad-spectrum light from the visible to mid-IR with high photoresponse, says NTU. If so, it would be suitable for use in many types of cameras, including IR cameras, traffic cameras, satellite imaging, and so on.

The graphene sensor is supposedly 1000 times more sensitive to light than current imaging sensors found in today’s cameras and uses ten times less energy, as it operates at lower voltages. When mass produced, graphene sensors are estimated by NTU to cost at least a factor of five less than conventional sensors.

The inventor of the graphene sensor, Wang Qijie, from NTU’s School of Electrical & Electronic Engineering, said it is believed to be the first time that a broad-spectrum, highly photosensitive sensor has been developed using pure graphene.

Nanostructures
His device, made by fabricating a graphene sheet into novel nanostructures, was featured in a paper published this month in Nature Communications. The nanostructures trap electrons, which is the key to achieving high photoresponse in graphene, making it far more effective than the normal CMOS or CCD image sensors, says Wang.

“While designing this sensor, we have kept current manufacturing practices in mind," sys Wang. "This means the industry can, in principle, continue producing camera sensors using the CMOS (complementary metal-oxide-semiconductor) process, which is the prevailing technology used by the majority of factories in the electronics industry. Therefore, manufacturers can easily replace the current base material of photosensors with our new nanostructured graphene material.”

“The performance of our graphene sensor can be further improved (such as the response speed) through nanostructure engineering of graphene, and preliminary results already verified the feasibility of our concept,” Wang adds. Development of the sensor took Wang and his team two years to complete.

Wang has filed a patent through NTU’s Nanyang Innovation and Enterprise Office for his invention. The next step is to work with industry collaborators to develop the graphene sensor into a commercial product.

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UV Sensor Bracelet Warns Against Too Much Sun

The June bracelet by Netatmo is a designer accessory with a gemstone-like UV sensor that measures sun exposure in real-time and syncs with an iOS app.

Since the sensor doesn’t have a display, it provides information through the app. The app tells the user how much sun they are getting, what SPF sunscreen to use, and when to put on sunglasses or a sun hat.

Designed by Louis Vuitton and Camille Toupet, the glittering sensor can be detached from the bracelet and used as a brooch.

The bracelet is being demonstrated at the CES 2014.


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UV Sensors FAQ -- UV Sensor Home

The UV sensor is widely used in the industry now. But there sometimes occurred some questions about the UV sensor. What are the questions about the UV sensors? And how to solve them?

Following are some FAQs about UV Sensors:

Questions:

1. What do UVA/UVB/UVC mean?

2. Is it possible to make a detector with an active area of 32 sq mm (4mm x 8mm)?

3. Do I need anything more to make a measurement with a UV Sensor?

4. Do I need anything more to make a measurement with a UV Probe?

5. How can I find out the relationship between input UV power and output sensor current for an individual UV sensor?

6. How can I find out the relationship between input UV power and output sensor current for an individual UV probe?

7. How fast are the sensors?

Questions & Answers:

1. What do UVA/UVB/UVC mean?

The UV region covers the wavelength range 100-400 nm and is divided into three bands:

    UVA (315-400 nm)

    UVB (280-315 nm)

    UVC (100-280 nm)

2. I am interested in the TW30DY UV photodiode. What is the response time for the device?

The response time for the TiO2 photodiodes is a function of the radiation intensity. This is due to the polycrystalline nature of the semiconductor: The TW30DY (as well as TW30DY2 and TW30SY) behaves as given by the following table:

UV Intensity

Response time

50 W/cm²

0.06 ms

10 mW/cm²

0.7 ms

0.5 mW/cm²

40 ms

0.01 mW/cm²

500 ms

If you need faster UV-photodiodes, we recommend the SiC UV-photodiodes, however they have a significantly smaller photoactive area.

Is it possible to make a detector with an active area of 32 sq mm (4mm x 8mm)?

A large area is possible to meet your requirements but would carry a development cost.

3. Do I need anything more to make a measurement with a UV Sensor?

UV sensors such as the SG01S and the AG38S-TO, are all photodiodes. They convert the incoming UV light into a very small current (of the order of nA). It is not possible to measure this current using typical bench multimeters so a transimpedence amplifier is required to convert this current into a usable voltage. The cost of a suitable amplifier and associated parts can be less than £1.

(It is possible to use the UV sensors in voltage mode and make measurements using multimeter set to the mV range. However, this is not recommended as the output is very non linear when in voltage mode.)

Note: The sensor itself does not require a power supply as it acts as a solar cell generating electricity from the incoming UV radiation. The transimpedance amplifier will require a power source though.

4. Do I need anything more to make a measurement with a UV Probe?

The UV Probes either include just a sensor or combine a sensor with an amplifier. The sensor only parts require a transimpedance amplifier as per the above question. The UV probes with a sensor and amplifier only require a power supply and a method of monitoring the output (such as a multimeter). The part UV_Air_ABC_AMP4-20mA_cable for example, only requires a 24V power supply to drive the probe and an ammeter to monitor the 4mA to 20mA output current.

5. How can I find out the relationship between input UV power and output sensor current for an individual UV sensor?

The relationship between the input UV power and output current is given on the data sheet for the wavelength of peak sensitivity. To find out the value at other wavelengths, the graph of spectral response can be used (also on the data sheet). These figures are for typical parts as there will be variation in the sensitivities from part to part. The SiC parts (SG01S etc) have a variation from part to part of +/-10% compared to the data sheet figure.

If greater accuracy is required, the sensor can be compared with a calibrated sensor to get an absolute reading or it can be supplied calibrated at an extra cost.

Once calibrated at one power level, measurements at other power levels can be made without further calibration steps as the output is very linear over many orders of magnitude.

6. How can I find out the relationship between input UV power and output sensor current for an individual UV probe?

For UV probes which consist only of a sensor, the above answer applies. For UV probes with both a sensor and an amplifier built into them, there is the additional question of the gain of the amplifier. This is normally factory set to meet the customers requirements so will differ from application to application. Again the entire probe can be supplied calibrated for an additional cost.

7. How fast are the sensors?

Rise and fall times for the most popular sensors are as follows:

SGO1S  8ns

SGO1M  25ns

SGO1L  65ns

AlGaN-UVB 10ns

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Galaxy Note 4 UV sensor will help to protect users

Samsung Galaxy Note 4 sends a UV sensor, while Samsung has confirmed that the fact that it does not show how the sensor will actually be used. A new report from SamMobile sheds some light on what might be Samsung is planning to do with the sensor Note 4 in ultraviolet light.

According to SamMobile Samsung will use the sensor to protect users, integrating it with the application S Health and monitoring exposure to UV radiation. We all know that too much time in the sun is not good for our skin and UV sensor can indicate the time in which people should go out into the sun, so as not to damage the cells. Samsung will use the sensor to give an accurate reading of the current UV index in the area and S Health application then explain what is meant by these various indexes.

Samsung will also seek to educate users about their skin health and influences the UV rays have on it. To do this, SamMobile Reports S Health app will come out of true and false information, trying to dispel common myths about exposure to UV radiation. These reports include the truth as “the body tan results defends itself against further damage from UV radiation” and lies, like, “tan is healthy.” by[ Android Central ]

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EXCLUSIVE: Microsoft Smartwatch Will Feature UV Sensor and Blood-Glucose Monitor

Microsoft will launch a sensor-laden smartwatch by the end of the year featuring a blood-glucose monitor and a UV sensor, according to people with knowledge of the matter.

Details of the device were revealed to IBTimes UK by a Microsoft source who also confirmed that the smartwatch will be cross-platform compatible.
The device will feature a UV Index sensor to help warn the user of harmful levels of ultraviolet radiation from sunlight in order to better protect against the risk of skin cancer.
The blood-glucose monitor will be used to help track users' fitness levels and assist people who suffer from diabetes.
The source also confirmed the smartwatch would be launched before the end of 2014 but couldn't provide a more specific release date beyond that.
Focus on fitness
Rumours that Microsoft is working on a smartwatch first emerged last year when the Wall Street Journal reported that the company was working with suppliers to develop a "touch-enabled watch device".
Since then various leaks have suggested that the smartwatch will feature a heart-rate monitor, a flat design and a screen on the inside of the wearer's wrist.
This has led to speculation that Microsoft's smartwatch is essentially a fitness band with smartphone notifications.
A recent patent filing by Microsoft for a Wearable Personal Information System includes images that supports these theories. They feature icons for running, heart rate and what appears to be a flame to signify the number of calories burnt.
Microsoft is yet to respond to a request for comment but has previously stated that it "does not comment on rumours or speculation" and has made no official mention of a smartwatch.

Biometric data revolution

The inclusion of medical sensor technologies like blood-glucose monitors is becoming increasingly common in wearable devices.
A deal between Google and Novartis was announced this week, paving the way for contact lenses that can monitor glucose levels.
It has also been speculated that Apple's fabled iWatch - rumoured to be launching alongside the iPhone 6 later this year - will feature a blood-glucose monitor.
Both Apple and Google recently announced new health and fitness platforms at their developer's conference. Healthkit on iOS and Google Fit on Android are designed to collate and manage the vast amounts of data gathered by devices featuring biometric sensors.

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Samsung Galaxy Note 4 will AMOLED screen and UV sensor

It will still take a few months before we see an actual presentation of the Galaxy Note 4 but the successor to the hugely popular Galaxy Note 3 course already holds the minds. New rumors today we can report whatever possible specifications.

Samsung Galaxy Note 4
We had almost no other expected more, but this rumor comes via SamMobile out. The men and women behind this site in the past year an extremely good reputation and appear on the Samsung field usually have at the right end. According to rumors, the Samsung Galaxy Note 4 in two versions, one for the Americas and Asia and one for Europe. The version for Europe is obviously the one that we find interesting and which seems to be equipped with a new Exynos processor, the 5433 with eight cores. There is no fool much is known about this processor, but the chip should start measuring the Snapdragon 805 that will be used in the American version. In terms of screen resolution, we seem to expect to go on a quad HD resolution, which is 2560 x 1440 pixels. The screen would be the AMOLED type. The screen size is not listed but is in line with expectations somewhere between 5.7 and 6 inches.

Also hydraulic press allows Samsung Galaxy S7 Edge 'bleeding'

SamMobile know further reports that the Galaxy Note 4 has a 16-megapixel camera with OIS (Optical Image Stabilization) at the back and a 2 megapixel front camera. There also seem to be some special sensors in the schedule, including a UV sensor. On that really is not very much known, but if we look at other Samsung smartphones we already know what to imagine. Earlier rumors we could conclude that the Samsung Galaxy Note 4 would have a new form factor and possibly a 5.7-inch Quad HD display.

What do you hope to see in a Samsung Galaxy Note 4? How big the screen should be and what (special) sensor do you have down? Let us know in the comments.

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Samsung Galaxy Note 4 UV sensor - functions and backgrounds

 The Samsung Galaxy Note 4 has a First Smartphone known as a UV sensor. UV stands for ultraviolet and just because you might wonder why so this sensor is installed in the new Samsung Galaxy Note. 4 Precisely for this reason we would like to explain in more detail in this article, what is going on with the UV sensor of the new Samsung Galaxy Note 4 to be.

The UV sensor of the Samsung Galaxy Note 4 to the ultraviolet radiation, which emanates from the sun, and then register in the app S-Health Show on a scale of 1-5. UV light is largely responsible for how strong our skin is damaged. UV light is responsible for tanning our skin and also for sunburn. Depending on how strong the UV index is, the more our skin is affected by the UV light of the sun.

The Samsung Galaxy Note 4 to make the UV light transparent with the integrated UV sensor. Thus Samsung wants to improve the portfolio of its app S-Health and the user help to take care of his health. The UV sensor of the Samsung Galaxy Note 4 is a nice idea, but how many times you will really use this sensor, is questionable. What are your experiences with the UV light sensor in the Samsung Galaxy Note 4?

ISweek（http://www.isweek.com/）- Industry sourcing & Wholesale industrial products 

Signal conditioning for a UV sensor

This application note describes the analog conditioning circuit used for a high impedance sensor that acts like a current sensor. It explains how to condition a signal coming from the sensor in this case an ultraviolet - UV sensor and how to improve performance.

While sunlight is important for our health, overexposure to it carries significant health risks. For example, sunburn is caused by the UV radiation contained in sunlight. Measurement of UV is important from a medical point of view, but for various other reasons too. The detection of UV rays is important in the industrial domain, particularly to detect flame in a blue flame oil burner or in some fire detectors.

Knowing the right levels of UV for plant growth is also important. Low levels of UV light have a positive effect on plant growth and seed germination but, higher levels can be harmful and even toxic. UV is part of our life and if it is not well controlled it can cause damage. Consequently, UV sensors are very important.


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$167 bikini uses UV sensor, app, to tell you how to tan

The Internet of Things -- connecting everyday items with sensors -- is hitting the beach in time for the northern hemisphere's summer with a bikini that says when it's time to apply more sun screen.

The made-to-measure invention comes from France -- the country that invented the bikini -- but with a price tag that might make even the well-tanned beach amazon blanch: 149 euros ($167).

For that price, though, the wearer will get a two-piece swimsuit with a small detachable ultraviolet sensor that, through a smartphone or tablet, sends a "sun screen alert" when the user's skin needs more protective sunblock cream.

The detector is calibrated to the wearer's skin type and how much of a tan she wants to get.
And there's even a "Valentine" function that sends the message to a boyfriend's smartphone so he knows when to apply the cream to his girlfriend's skin.

"The idea came to me right away, on a day when I saw someone get sunburnt on a beach," the Frenchwoman behind the smart bikinis, Marie Spinali, told AFP.

'Not a gimmick'
She started her company, Spinali Design, last month in the eastern French town of Mulhouse where she lives, and sells the bikinis through her website.

"There are flowerpots that give an alert when plants need watering, so I thought it was time to invent something to warn when the sun is too strong," she said.

"It's not a gimmick," she added, explaining that often when people think to add more suncream, it's too late and they already have sunburn.

An expert, Doctor Claudine Blanchet-Bardon of France's National Association of Dermatologists, said the device was "interesting, because anything that warns people against UV exposure is good".

But she qualified that by saying that having the sensor attached to a bikini "doesn't send the right message -- the best protection against the sun is to not get too much exposure and to stay covered with clothes".

A journalist for a French website specialised in the Internet of Things, Thomas Remilleret of ObjetConnecte.net, commented that the idea of having UV detectors linked to a smartphone app is "not really new or revolutionary".

But, he acknowledged, Spinali's bikinis "meet a demand" even though he believed their price still too high for the market.

Spinali said her team was working with French researchers in nanotechnology to come up with a smaller UV sensor that would be part of the bikini itself.

She also said they were at work on models for men and for children -- with the sensors for the latter also featuring GPS locators, to quickly find kids on the beach.

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