Results 31 to 40 of about 69,047 (265)

Feature Fusion Combined With Raman Spectroscopy for Early Diagnosis of Cervical Cancer

open access: yesIEEE Photonics Journal, 2021
Cervical cancer is a serious threat to women's health due to malignant tumours, and early detection can greatly reduce mortality. In this paper, cervical tissue was used as the research object, and Raman spectroscopy analysis of cervical ...
Huiting Zhang   +9 more
doaj   +1 more source

Long Term Degree of Conversion of two Bulk-Fill Composites

open access: yesActa Stomatologica Croatica, 2016
Objectives: To investigate the long-term development of the post-cure degree of conversion (DC) for two flowable bulk-fill composites. Materials and methods: Tetric EvoFlow Bulk Fill (TEFBF) and SDR were chosen due to their distinct compositional ...
Matej Par   +5 more
doaj   +1 more source

Strain Relaxation Effect on the Peak Wavelength of Blue InGaN/GaN Multi-Quantum Well Micro-LEDs

open access: yesApplied Sciences, 2022
In this paper, the edge strain relaxation of InGaN/GaN MQW micro-pillars is studied. Micro-pillar arrays with a diameter of 3–20 μm were prepared on a blue GaN LED wafer by inductively coupled plasma (ICP) etching.
Chaoqiang Zhang   +9 more
doaj   +1 more source

Effects of Temperature on the FT NIR Raman Spectra of Fish Skin Collagen

open access: yesApplied Sciences, 2021
The development of regenerative medicine turns attention toward native collagen as a biocompatible material. Particularly interesting is fish skin collagen, which is relatively easy to extract comparing mammalian tissues and free of some pathogens that ...
Maria Połomska   +3 more
doaj   +1 more source

Cost-Effective Raman Spectra Acquisition Based on Spreading Code Modulation for Exciting Light

open access: yesIEEE Photonics Journal
Raman spectroscopy is a powerful, non-destructive analytical tool that is widely used across various fields for identifying molecular structures and reactions. However, Raman spectroscopy may be hindered by background and fluorescence noises.
Yu Wan   +6 more
doaj   +1 more source

A Tunable Freeform-Segmented Reflector in a Microfluidic System for Conventional and Surface-Enhanced Raman Spectroscopy

open access: yesSensors, 2020
We present a freeform-segmented reflector-based microfluidic system for conventional Raman and Surface-Enhanced Raman Scattering (SERS) analysis. The segmented reflector is directly designed by a numerical approach.
Qing Liu   +3 more
doaj   +1 more source

Recent advances of Raman spectroscopy for the analysis of bacteria

open access: yesAnalytical Science Advances, 2023
Rapid and sensitive bacteria detection and identification are becoming increasingly important for a wide range of areas including the control of food safety, the prevention of infectious diseases, and environmental monitoring.
Linsey Rodriguez   +2 more
doaj   +1 more source

Hydrogel-Core Microstructured Polymer Optical Fibers for Selective Fiber Enhanced Raman Spectroscopy

open access: yesSensors, 2021
A new approach of Fiber Enhanced Raman Spectroscopy (FERS) is described within this article based on the use of Hydrogel-Core microstructured Polymer Optical Fibers (HyC-mPOF).
Mikel Azkune   +5 more
doaj   +1 more source

Biodegradable starch-based films containing saturated fatty acids: thermal, infrared and raman spectroscopic characterization

open access: yesPolímeros, 2012
Biodegradable films of thermoplastic starch and poly (butylene adipate co-terephthalate) (PBAT) containing fatty acids were characterized thermally and with infrared and Raman spectroscopies. The symmetrical character of the benzene ring in PBAT provided
Marcelo M. Nobrega   +3 more
doaj   +3 more sources

Label-free opto-physicochemical profiling of eosinophils reveals molecular and structural signatures for EGPA diagnosis

open access: yesMaterials Today Advances
Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare disease that requires accurate diagnostic methods to overcome the limitations of current diagnostic criteria relying on clinical observation.
Minju Cho   +6 more
doaj   +1 more source

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