Results 21 to 30 of about 233,942 (302)

Raman spectrum feature extraction and diagnosis of oil–paper insulation ageing based on kernel principal component analysis

High Voltage, 2021
Raman spectroscopy, with its specific ability to generate a unique fingerprint‐like spectrum of certain substances, has attracted much attention in diagnosing the ageing degree of oil–paper insulation.
Dingkun Yang, Chen Weigen, Shi Haiyang, Wan Fu, Zhou Yongkuo   +4 more
doaj   +1 more source

Multiwell Raman plate reader for high-throughput biochemical screening

Scientific Reports, 2021
Although Raman spectroscopy has been used for the quantitative analysis of samples in many fields, including material science, biomedical, and pharmaceutical research, its low sensitivity hindered the application of the analytical capability for high ...
Hiroyuki Kawagoe, Jun Ando, Miwako Asanuma, Kosuke Dodo, Tetsuya Miyano, Hiroshi Ueda, Mikiko Sodeoka, Katsumasa Fujita   +7 more
doaj   +1 more source

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

IEEE 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, Cheng Chen, Cailing Ma, Chen Chen, Zhimin Zhu, Bo Yang, Fangfang Chen, Dongfang Jia, Yizhe Li, Xiaoyi Lv   +9 more
doaj   +1 more source

RAMPAC: a program for analysis of complicated Raman spectra [PDF]

, 1993
A computer program for the analysis of complicated (e.g. multi-line) Raman spectra is described. The program includes automatic peak search, various procedures for background determination, peak fit and spectrum deconvolution and extensive spectrum ...
Abramowitz, Bevington, de Mul, Marquardt, Pearson, Puppels   +5 more
core   +4 more sources

Stress effects on the Raman spectrum of an amorphous material: theory and experiment on a-Si:H [PDF]

, 2015
Strain in a material induces shifts in vibrational frequencies, which is a probe of the nature of the vibrations and interatomic potentials, and can be used to map local stress/strain distributions via Raman microscopy.
Buonassisi, Tonio, Grossman, Jeffrey C., Johlin, Eric C., Kirkpatrick, Timothy R., Strubbe, David A.   +4 more
core   +3 more sources

Long Term Degree of Conversion of two Bulk-Fill Composites

Acta 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, Matea Lapas-Barisic, Ozren Gamulin, Vlatko Panduric, Nika Spanovic, Zrinka Tarle   +5 more
doaj   +1 more source

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

Sensors, 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, Michael Stenbæk Schmidt, Hugo Thienpont, Heidi Ottevaere   +3 more
doaj   +1 more source

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

Applied 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, Leszek Kubisz, Jacek Wolak, Dorota Hojan-Jezierska   +3 more
doaj   +1 more source

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

Applied 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, Ke Gao, Fei Wang, Zhiming Chen, Philip Shields, Sean Lee, Yanqin Wang, Dongyan Zhang, Hongwei Liu, Pingjuan Niu   +9 more
doaj   +1 more source

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

IEEE 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, Jiahe Zhang, Cheng Chen, Xiaoyi Lv, Xi Yang, Yan Huang, Xiangwei Zhao   +6 more
doaj   +1 more source