Results 71 to 80 of about 304,291 (300)

Discrimination of Falsified Erectile Dysfunction Medicines by Use of an Ultra-Compact Raman Scattering Spectrometer

Pharmacy, 2020
Substandard and falsified medicines are often reported worldwide. An accurate and rapid detection method for falsified medicines is needed to prevent human health hazards. Raman scattering spectroscopy has emerged as a non-destructive analysis method for
Tomoko Sanada, Naoko Yoshida, Kazuko Kimura, Hirohito Tsuboi   +3 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Single-cell Raman microscopy with machine learning highlights distinct biochemical features of neutrophil extracellular traps and necrosis

Scientific Reports, 2023
The defining biology that distinguishes neutrophil extracellular traps (NETs) from other forms of cell death is unresolved, and techniques which unambiguously identify NETs remain elusive. Raman scattering measurement provides a holistic overview of cell
Patrick Michael Lelliott, Alison Jane Hobro, Nicolas Pavillon, Masayuki Nishide, Yasutaka Okita, Yumiko Mizuno, Sho Obata, Shinichiro Nameki, Hanako Yoshimura, Atsushi Kumanogoh, Nicholas Isaac Smith   +10 more
doaj   +1 more source

Intersubband electronic Raman scattering in narrow GaAs single quantum wells dominated by single-particle excitations [PDF]

, 2004
We measured resonant Raman scattering by intersubband electronic excitations in GaAs/AlAs single quantum wells (QWs) with well widths ranging from 8.5 to 18 nm.
A. Pinczuk, Aishi Yamamoto, H. Peric, Hidefumi Akiyama, Kensuke Kobayashi, Masahiro Yoshita, Shingo Katsumoto, Takeya Unuma, Yasuhiro Iye, Yoshiaki Hashimoto, Yoshihiko Kanemitsu   +10 more
core   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Thermal effects on electron-phonon interaction in silicon nanostructures

, 2009
Raman spectra from silicon nanostructures, recorded using excitation laser power density of 1.0 kW/cm^2, is employed here to reveal the dominance of thermal effects at temperatures higher than the room temperature.
A. K. Shukla, AG Cullis, AK Shukla, G Faraci, H Richter, HS Mavi, HS Mavi, HS Mavi, IH Campbell, J Niu, J Raptis, KW Adu, L Sirleto, M Balkanski, M Balkanski, M Becker, M Kroner, MJ Konstantinovic, P Mishra, R Jalilian, R Kumar, R Kumar, R Kumar, R Kumar, R Tsu, Rajesh Kumar, S Narasimhan, SB Concari, TR Hart, U Fano, Vivek Kumar   +30 more
core   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

High Spectral Resolution Raman Measurements Using Light-Emitting Diode as Excitation Based on Weighted Spectral Reconstruction Method

IEEE Access, 2019
Raman spectroscopy is a spectroscopic technique that can provide rich biochemical information about the sample through the inelastic scattering between monochromatic light and molecular vibrations, thus a narrow bandwidth and costly laser is typically ...
Shuo Chen, Mixing Liu, Jing Liu, Lingmin Kong, Wenbin Xu, Gang Hou, Liping Xie, Xiaoyu Cui   +7 more
doaj   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals [PDF]

Журнал нано- та електронної фізики, 2014
Second- and third-order Raman spectra of bulk and nanometric CdS1 – xSex crystals were measured. At off-resonance excitation conditions the second-order Raman spectra of bulk CdS1 – xSex exhibit anharmonic coupling of optical phonons and two-phonon ...
V.V. Lopushansky
doaj