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Wireless, Wearable Sensors-on-a-Chip Provide Precise Dosimetry at Multiple Wavelengths

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EVANSTON, Ill., Dec. 11, 2018 — A wearable, battery-free sensor has been developed that can measure and monitor exposure to light across multiple wavelengths, from the UV to the VIS to the IR regions. The device, created by researchers at Northwestern University, can record up to three wavelengths at one time. This is a UVA sunlight skin sensor on a fingernail. Courtesy of Northwestern University. The sensor features a system-on-a-chip design that allows wireless, smartphone-based access to an individual’s sensor-read solar exposure data. Light passes through a window in the sensor and strikes a...Read full article

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    Published: December 2018
    Glossary
    solar radiation
    Radiation from the sun that is made up of a very wide range of wavelengths, from the long infrared to the short ultraviolet with its greatest intensity in the visible green at about 5000 Å. The solar radiation the earth receives is more restricted, generally to the visible and near-infrared, as the air strongly absorbs the wavelengths located at either end of the spectrum.
    phototherapy
    Phototherapy is a medical treatment that involves the use of light to treat various conditions, particularly those related to the skin or mood disorders. There are different types of phototherapies, each tailored to address specific conditions: UV phototherapy: This form of phototherapy utilizes ultraviolet (UV) light to treat skin conditions such as psoriasis, eczema, vitiligo, and certain types of dermatitis. UV radiation can suppress the immune system and reduce inflammation, leading to...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    solar radiationwireless devicebattery-free deviceResearch & TechnologyeducationNorthwestern UniversityAmericasLight SourcesOpticsSensors & DetectorsUVAUVBlight exposurecancerphototherapyBiophotonicslight therapyUV radiationdosimetrymedicalnanowearable devicesun exposureseasonal affective disorderSADblue light therapyMy Skin Track

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