Results 91 to 100 of about 304,291 (300)

Effect of impurities on the Raman scattering of 6H-SiC crystals

Materials Research, 2012
Raman spectroscopy was applied to different-impurities-doped 6H-SiC crystals. It had been found that the first-order Raman spectra of N-, Al- and B-doped 6H-SiC were shifted to higher frequency when comparing with undoped samples.
Shenghuang Lin, Zhiming Chen, Lianbi Li, Chen Yang   +3 more
doaj  

A Fast Fluorescence Background Suppression Method for Raman Spectroscopy Based on Stepwise Spectral Reconstruction

IEEE Access, 2018
Raman spectroscopy is a rapid and non-destructive technique for detecting unique spectral fingerprints from biological samples. Raw Raman spectra often come with strong fluorescence background that makes spectral interpretation challenging.
Shuo Chen, Lingmin Kong, Wenbin Xu, Xiaoyu Cui, Quan Liu   +4 more
doaj   +1 more source

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

Nature and Raman signatures of the Higgs amplitude mode in the coexisting superconducting and charge-density-wave state

, 2014
We investigate the behavior of the Higgs (amplitude) mode when superconductivity emerges on a preexisting charge-density-wave state. We show that the weak overdamped square-root singularity of the amplitude fluctuations in a standard BCS superconductor ...
Benfatto, L., Cea, T.
core   +1 more source

Atomic‐Scale Light Coupling Control in Ultrathin Photonic Membranes

Advanced Functional Materials, EarlyView.
Ultrathin photonic nanomembranes provide atomic‐scale control over the coupling between incident light and high‐Q photonic modes, enabling angstrom‐level resonance tuning and strong field confinement. When integrated with TMD monolayers, they further yield enhanced light–matter interactions, offering a versatile platform for advancing quantum photonics,
Chih‐Zong Deng, Chun‐Hao Chiang, Sunhao Shi, Jui‐Han Fu, Yen‐Ju Wu, Kuniaki Konishi, Vincent Tung, Chun‐Wei Chen, Ya‐Lun Ho   +8 more
wiley   +1 more source

Identification of mono-and few-layer graphene: Raman study

Materials and Devices, 2018
In this theoretical work, the Raman spectra were analyzed by considering the origin of the G peak, its shape, position and relative intensity as a function of the number of graphene layers. By using the spectral moment’s method, the Raman spectra of mono,
M. Boutahir, Ah Rahmani, H. Chadli, A. Rahmani   +3 more
doaj   +1 more source

Raman and Infrared-Active Phonons in Hexagonal HoMnO$_3$ Single Crystals: Magnetic Ordering Effects

, 2003
Polarized Raman scattering and infrared reflection spectra of hexagonal HoMnO$_3$ single crystals in the temperature range 10-300 K are reported. Group-theoretical analysis is performed and scattering selection rules for the second order scattering ...
A P Litvinchuk, Burns G, Chen X K, Gorban? I S, Gorban? I S, Huang Z J, Iizuka-Sakano T, Iliev M N, Iliev M N, Iliev M N, Litvinchuk A P, M M Gospodinov, M N Iliev, Popov V N, Sato T J, Siegle H, Smolenskii G A, Smolenskii G A, V N Popov, Yu T   +19 more
core   +1 more source

Through Diamond Robust Surface Enhanced Raman Spectroscopy

Advanced Functional Materials, EarlyView.
Thin film diamond growth offers a unique opportunity for Surface Enhanced Raman Spectroscopy (SERS); the encapsulation of plasmonic nanostructures within a transparent, chemically stable, and physically robust coating. The diamond acts as both a window and protective layer, enabling illumination of the plasmonic nanostructures through the diamond ...
Kieran N. Twaddle, Rebecca J. Watkins, Ralph J. Moors, Massimiliano L.A. Ramsay, Richard B. Jackman   +4 more
wiley   +1 more source

Advancing living Bacillus spore identification: Multi-head self-attention mechanism-enabled deep learning combined with single-cell Raman spectroscopy

Journal of Innovative Optical Health Sciences
Many spore-forming Bacillus species can cause serious human diseases, because of accidental Bacillus spore infection. Thus, developing an identification strategy with both high sensitivity and specificity is greatly in demand. In this work, we proposed a
Mengjiao Xue, Fusheng Du, Lin He, Junhui Hu, Yuanpeng Li, Yuan Lu, Shuwen Zeng, Yufeng Yuan   +7 more
doaj   +1 more source

Low frequency Raman studies of multi-wall carbon nanotubes: experiments and theory

, 2002
In this paper, we investigate the low frequency Raman spectra of multi-wall carbon nanotubes (MWNT) prepared by the electric arc method. Low frequency Raman modes are unambiguously identified on purified samples thanks to the small internal diameter of ...
C. Godon, C. Journet, D. Kahn, F. Tuinstra, H. Hiura, H. Jantoljak, H. Kataura, J. M. Benoit, J. P. Buisson, J.P. Buisson, K. Nakamura, L. Henrard, M.A. Pimenta, M.S. Dresselhaus, O. Chauvet, P.M. Ajayan, S. Bandow, S. Guha, S. Lefrant, U.D. Venkateswaran   +19 more
core   +1 more source