Results 71 to 80 of about 68,699 (269)

A coma-free super-high resolution optical spectrometer using 44 high dispersion sub-gratings

Scientific Reports, 2021
Unlike the single grating Czerny–Turner configuration spectrometers, a super-high spectral resolution optical spectrometer with zero coma aberration is first experimentally demonstrated by using a compound integrated diffraction grating module consisting
Hua-Tian Tu, An-Qing Jiang, Jian-Ke Chen, Wei-Jie Lu, Kai-Yan Zang, Hao-Qi Tang, Osamu Yoshie, Xiao-Dong Xiang, Young-Pak Lee, Hai-Bin Zhao, Yu-Xiang Zheng, Song-You Wang, Junpeng Guo, Rong-Jun Zhang, Jing Li, Yue-Mei Yang, W. D. Lynch, Liang-Yao Chen   +17 more
doaj   +1 more source

Using integrated absorption to calibrate optical cavity spectrometers [PDF]

, 2015
Sensitive absorption techniques using optical cavities (such as CEAS or ICOS) generally need the spectrometer response to be calibrated for quantitative measurements.
Fullam, Donovan P., Shoji, K., Venables, Dean S.   +2 more
core   +1 more source

Calibration of the spectrometer aboard the INTEGRAL satellite [PDF]

SPIE Proceedings, 2003
12 pages, 19 figures, Published in Proceedings of SPIE conference, 24-28 August 2002, Waikoloa, Hawaii ...
Schanne, S., Cordier, B., Gros, M., Attie, D., von Ballmoos, P., Bouchet, L., Carli, R., Connell, P., Diehl, R., Jean, P., Kiener, J., von Kienlin, A., Knödlseder, Jürgen, Laurent, Philippe, Lichti, G.-G., Mandrou, P., Paul, J., Paul, P., Roques, J.-P., Sanchez, F., Schoenfelder, V., Shrader, C., Skinner, G.-K., Strong, A.-W., Sturner, S.-J., Tatischeff, V., Teegarden, B.-J., Vedrenne, G., Weidenspointner, G., Wunderer, C.-B.   +29 more
openaire   +4 more sources

Antibiofilm activity of a chionodracine‐derived peptide by NMR‐based metabolomics of cell‐free supernatant of Acinetobacter baumannii clinical strains

FEBS Open Bio, EarlyView.
KHS‐Cnd peptide is able to impair biofilm formation and disaggregate mature biofilms in Acinetobacter baumannii clinical isolates. Differences in extracellular metabolites reflect changes in biofilm metabolism due to KHS‐Cnd treatment. Among the differentially represented extracellular metabolites upon KHS‐Cnd treatment, the significantly altered ...
Fernando Porcelli, Enrico Landi, Francesco Maiurano, Irene Paris, Rosanna Papa, Marco Artini, Laura Selan, Stefano Borocci, Francesco Buonocore, Esther Imperlini   +9 more
wiley   +1 more source

Demonstration of silicon-on-insulator mid-infrared spectrometers operating at 3.8µm

, 2013
The design and characterization of silicon-on-insulator mid- infrared spectrometers operating at 3.8µm is reported. The devices are fabricated on 200mm SOI wafers in a CMOS pilot line.
Chen, Xia, Malik, A., Mashanovich, Goran Z., Muneeb, M., Nedeljković, Miloš, Pathak, S., Roelkens, G.C., Van Campenhout, J., Verheyen, P.   +8 more
core   +1 more source

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

FEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies, Garth L. Maker, Ian F. Musgrave, Samantha Lodge   +3 more
wiley   +1 more source

Multi-mode interference waveguide chip-scale spectrometer (invited)

APL Photonics
Spectral analysis of light is one of the oldest and most versatile scientific methods and the basis of countless techniques and instruments. Miniaturized spectrometers have recently seen great advances, but challenges remain before they are widely ...
Md Nafiz Amin, Vahid Ganjalizadeh, Tyler J. Adams, Porter B. Dixon, Zoe Weber, Matthew DeMartino, Kevin Bundy, Aaron R. Hawkins, Holger Schmidt   +8 more
doaj   +1 more source

Silicon Channeled Spectropolarimeter for On‐Chip Single‐Detector Stokes Spectroscopy

Advanced Photonics Research, 2022
Compact and low‐cost spectropolarimeters are desirable in many fields for probing the wavelength‐dependent polarization state of light. Conventional spectropolarimetry systems use bulky, free‐space optical components or require at least four ...
Zhongjin Lin, Huijie Wang, Simon Bélanger-de Villers, Qifeng Li, Wei Shi   +4 more
doaj   +1 more source

On-chip spectroscopy with thermally-tuned high-Q photonic crystal cavities

, 2015
Spectroscopic methods are a sensitive way to determine the chemical composition of potentially hazardous materials. Here, we demonstrate that thermally-tuned high-Q photonic crystal cavities can be used as a compact high-resolution on-chip spectrometer ...
Andreas C. Liapis, Boshen Gao, Herzberg G., Mahmudur R. Siddiqui, Robert W. Boyd, Zhimin Shi   +5 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source