Results 1 to 10 of about 244,391 (301)

Skin cancer screening – better safe than sorry [PDF]

open access: yesSHS Web of Conferences, 2020
Skin cancer is the most common type of cancers. In Latvia, on average there are approximately 200 new melanoma and 1300 non-melanoma cancer cases per year. Non-melanoma cancers are: Basal Cell Carcinoma, Squamous Cell Carcinoma and others.
Lange Marta   +4 more
doaj   +1 more source

High-Sensitivity Whispering Gallery Mode Humidity Sensor Based on Glycerol Microdroplet Volumetric Expansion

open access: yesSensors, 2021
We demonstrate a highly sensitive whispering gallery mode (WGM) relative humidity (RH) sensor based on a glycerol microdroplet. WGMs were excited using a 760 nm tunable semiconductor laser.
Pauls Kristaps Reinis   +5 more
doaj   +1 more source

Wavelength Sensing Based on Whispering Gallery Mode Mapping

open access: yesFibers, 2022
We demonstrate a wavelength sensor based on whispering gallery mode (WGM) resonators. For the first time, multiple polymethyl methacrylate (PMMA) microspheres were simultaneously attached to a tapered fiber.
Roberts Berkis   +7 more
doaj   +1 more source

Whispering Gallery Mode Resonator Temperature Compensation and Refractive Index Sensing in Glucose Droplets

open access: yesSensors, 2021
Among the different types of photonic sensor devices, optical whispering gallery mode resonators (WGMRs) have attracted interest due to their high level of sensitivity, small size, and ability to perform real-time temperature measurements.
Inga Brice   +4 more
doaj   +1 more source

Phonon Spectroscopy at Atomic Resolution [PDF]

open access: yesPhysical Review Letters, 2019
Advances in source monochromation in transmission electron microscopy have opened up new possibilities for investigations of condensed matter using the phonon-loss sector of the energy-loss spectrum. Here, we explore the spatial variations of the spectrum as an atomic-sized probe is scanned across a thin flake of hexagonal boron nitride. We demonstrate
Hage, FS   +3 more
openaire   +6 more sources

Spectral Line Reflectance and Fluorescence Imaging Device for Skin Diagnostics

open access: yesApplied Sciences, 2020
The multi-spectral-line imaging concept, which was recently implemented for the snapshot mapping of three main skin chromophores—melanin, oxy-hemoglobin, and deoxy-hemoglobin, is further explored for the snapshot capturing of four spectral line images at
Janis Spigulis   +4 more
doaj   +1 more source

SkImager: a concept device for in-vivo skin assessment by multimodal imaging; pp. 301–308 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2014
A compact prototype device for diagnostic imaging of skin has been developed and tested. Polarized LED light at several spectral regions is used for illumination, and round skin spot of diameter 34 mm or 11 mm is imaged by a CMOS sensor via cross ...
Janis Spigulis   +3 more
doaj   +1 more source

Time of flight for photon in human skin

open access: yesJournal of Biomedical Photonics & Engineering, 2016
The time of flight for photons in human skin was measured using picosecond diode laser. Two different wavelength lasers were used - 405 nm and 510 nm. A difference for time of flight in normal skin and in nevus was observed as well as a difference for ...
Antra Dzerve   +3 more
doaj   +1 more source

Object-Based Shadow Index via Illumination Intensity from High Resolution Satellite Images over Urban Areas

open access: yesSensors, 2020
For multi-spectral remote sensing imagery, accurate shadow extraction is of great significance for overcoming the information loss caused by high buildings and the solar incidence angle in urban remote sensing.
Haoyang Fu, Tingting Zhou, Chenglin Sun
doaj   +1 more source

Laser speckle imaging for visualization of hidden effects for early detection of antibacterial susceptibility in disc diffusion tests

open access: yesFrontiers in Microbiology, 2023
Rapid identification of effective antibiotic treatment is crucial for increasing patient survival and preventing the formation of new antibiotic-resistant bacteria due to preventative antibiotic use.
Ilya Balmages   +9 more
doaj   +1 more source

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