Results 81 to 90 of about 2,510,910 (246)

Combustion applications of laser-induced breakdown spectroscopy

, 2020
The laser-induced breakdown spectroscopy (LIBS) technique has the capability to perform multielemental, remote, online, in situ analysis with no/minimum sample preparations. LIBS has created a great deal of interest in combustion diagnostic research.
Fang Y. Yueh, Eseller, Kemal Efe, Jagdish P. Singh, Yueh,F.Y., Eseller,K.E., Tripathi,M.M., Sezer,B., Kemal Efe Eseller, Markandey M. Tripathi, Banu Sezer, Singh,J.P.   +10 more
core   +1 more source

Enhanced Detection of Pesticide Residues Using Two-Dimensional Raman Correlation Spectroscopy and Machine Learning

Applied Spectroscopy Practica
The accurate detection of pesticide residues in fresh produce is essential for public health. This study evaluated the use of two-dimensional correlation spectroscopy (2D-COS), specifically applied to Raman data, combined with principal component ...
Charles N. Ndung’u, Kenneth A. Kaduki, M. Ian Kaniu, Lucy W. Kiruri   +3 more
doaj   +1 more source

Chemical State Detection and Charge Transfer in Complex Oxide Heterostructures via In Situ Auger Electron Spectroscopy

Advanced Functional Materials, EarlyView.
In situ Auger Electron Spectroscopy resolves oxidation states with high fidelity during the pulsed laser deposition of multivalent perovskite manganate and vanadate heterostructures. The chemical‐state signature is carried by the valence‐electron population of the transition‐metal cation, read out through the relative intensities of Auger fine ...
Harish Kumarasubramanian, Jayakanth Ravichandran   +1 more
wiley   +1 more source

Determination of the Effective Lifetime of a Spinor Bose–Einstein Condensate

Photonics
The effective lifetime of ultra-cold atoms in specific quantum states plays a crucial role in studying interaction parameters within quantum systems. Measuring the effective lifetime of various quantum states within ultra-cold atoms is a fundamental task
Xin Wang, Yong Qin, Jun Jian, Wenliang Liu, Jizhou Wu, Yuqing Li, Vladimir Sovkov, Jie Ma   +7 more
doaj   +1 more source

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Efficient fiber-laser pumped Ho:LuLiF₄ laser

We present results for an efficient Ho:LuLiF4 laser in-band pumped by a cladding-pumped Tm-doped silica fiber laser. The polarized, tunable Tm-doped silica fiber-laser operates at 1938 nm, ideally suited for in-band pumping the 40 mm long weakly-doped (0.
Veronesi, S., Parisi, D., Clarkson, W.A., Tonelli, M., Kim, J.W., Mackenzie, J.I.   +5 more
core   +1 more source

Gas sensing based on optical fibre coupled diode laser spectroscopy : a new approach to sensor systems for safety monitoring [PDF]

, 2009
We describe an entirely passive fibre optic network which senses, amongst other species, CH¬4¬ and CO¬¬2 , with sensitivity and selectivity compatible with safety sensing in the mine environment.
Walsh, Douglas, Johnstone, W., Duffin, K., Culshaw, Brian, Mauchline, Iain S., Stewart, G.   +5 more
core   +3 more sources

External cavity diode lasers and non-linear optical frequency conversion in spectroscopic applications [PDF]

, 2006
Semiconductor diode lasers are successful tools in atomic spectroscopy. They are routinely used in frequency conversion applications to develop devices that access regions of the spectrum not directly available.
Shah, Anjali
core   +2 more sources

A monolithically integrated near-infrared imager with crystallization- and oxidation-modulated tin-lead perovskites

Light: Science & Applications
The fast crystallization and facile oxidation of Sn2+ of tin-lead (Sn-Pb) perovskites are the biggest challenges for their applications in high-performance near-infrared (NIR) photodetectors and imagers.
Zhichun Yang, Jingjing Liu, Haotian Bao, Zonghao Liu, Zaiwei Wang, Xiangdong Li, Zhihao Chen, Guofeng Zhang, Ruiyun Chen, Jianyong Hu, Shuangping Han, Wei Chen, Chengbing Qin, Liantuan Xiao, Suotang Jia   +14 more
doaj   +1 more source

Efficient Loading of an Yb MOT on the ¹S₀ → ¹P₁ Transition

Photonics
We demonstrate efficient loading of an Yb three-dimensional magneto-optical trap (3D MOT) on the 1S0 → 1P1 transition. The experiment employs a two-dimensional magneto-optical trap (2D MOT) as an efficient cold atom source. Through optimization of the 2D
Zhufang Zhao, Shunxiang Wang, Jun Jian, Quanxin Zhang, Wenliang Liu, Jizhou Wu, Yuqing Li, Jie Ma   +7 more
doaj   +1 more source