Results 101 to 110 of about 1,616,309 (213)

Reaction‐Time pH Stabilization by Poly(acrylic acid) with Ethanol‐Mediated Growth Control for Efficient Hydrothermal Sb2(S,Se)3 Solar Cells

Advanced Functional Materials, EarlyView.
Poly(acrylic acid) acts as a reaction‐time pH buffer during hydrothermal Sb2(S,Se)3 growth through its COOH/COO‐ equilibrium. When combined with ethanol‐regulated growth, this buffering strategy reduces Sb‐O related surface disorder, improves local electronic uniformity and carrier collection, and increases the champion solar‐cell efficiency to 10.25%,
Juhee Lee, Geumha Lim, Wookyung Jeon, Seongju Park, Jinwoo Chu, Yohan Yoon, William Jo, Byungha Shin   +7 more
wiley   +1 more source

Vibrational spectroscopy via stimulated Raman induced Kerr lensing

APL Photonics, 2018
We present a new method for the measurement of the stimulated Raman spectrum based on time-dependent spatial modulation of a laser beam as it passes through a Raman active medium.
Dekel Raanan, Julian Lüttig, Yaron Silberberg, Dan Oron   +3 more
doaj   +1 more source

Robust cosmic ray spike detection in single Raman spectra and time series [PDF]

RSC Advances
Cosmic rays (CRs) are a common spectral interference in Raman spectroscopy. While they are easily identified by human eye, there is an increasing need for better automated removal methods especially in the cases of large datasets or dynamic measurements.
Jason Malenfant, Jean-François Masson
doaj   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source

1.06 µm picosecond pulsed, normal dispersion pumping for generating efficient broadband infrared supercontinuum in meter-length single-mode tellurite holey fiber with high Raman gain coefficient

, 2011
We investigate efficient broadband infrared supercontinuum generation in meter-length single-mode small-core tellurite holey fiber. The fiber is pumped by 1.06µm picosecond pulses in the normal dispersion region.
Shi, Jindan, Feng, Xian, Teh, Peh Siong, Chen, Kangkang, Horak, Peter, Ibsen, Morten, Richardson, David J., Alam, Shaif-ul, Loh, Wei H., null Xian Feng, David J. Richardson, null Peh Siong Teh, Morten Ibsen, Peter Horak, Shaif-Ul Alam, null Jindan Shi, Wei H. Loh, null Kangkang Chen   +17 more
core   +1 more source

Magneto‐Ionic Devices With Polymer‐Based Electrolytes

Advanced Functional Materials, EarlyView.
Polymer electrolytes are introduced for magneto‐ionic devices based on hydroxide and hydrogen ions. The magneto‐ionic effect results in a pronounced voltage‐controlled variation of coercivity in both devices. The switching speed is in the range of 100 ms.
Markus Gößler, Richard Weber, Michael Sommer, Karin Leistner   +3 more
wiley   +1 more source

Experimental Polarizability Transition Moments of CO₂ for Excited Vibrational States

Molecules
The Raman spectrum of CO2 from room temperature to 1800 K has been measured in a series of experiments. The differential Raman scattering cross-sections for the fundamental bands at 1285.41 cm−1 and 1388.18 cm−1 have been obtained from reference bands of
Carlos Álvarez, Guzmán Tejeda, José M. Fernández   +2 more
doaj   +1 more source

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

Advanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa, Frank Kaulfuß, Stefan Makowski, Volker Weihnacht   +3 more
wiley   +1 more source

Raman spectroscopy on cubic and hexagonal SrMnO3

, 2006
We report on the first optical characterization of both cubic and hexagonal SrMnO3. Room-temperature Raman spectra collected by means of a micro-Raman spectrometer are shown.
Sacchetti A, Postorino P, Baldini M, Martin C, Maignan A   +4 more
core  

Identification of biomolecules by mechanical modulation Raman microscopy [PDF]

, 2013
textRaman microscopy is a tool used by physicists to collect molecular information from a wide variety of samples. Biophysicists have increasingly made use of Raman microscopy in combination with optical tweezers to identify the molecular makeup of ...
Hinko, Kathleen Ann
core