Results 71 to 80 of about 34,043 (308)

EFFECT OF PUMPING TYPES ON OPTICAL PATH DIFFERENCE IN ND:YAG LASER ROD

Diyala Journal of Engineering Sciences, 2010
The finite element method has been used successfully to determine the temperature distribution throughout Nd:YAG laser rod subjected to one end power pumping cooled by water from the longitudinal side.
Zahraa Mohamed Ali Kamil
doaj  

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source

Spin phenomena in semiconductor quantum dots [PDF]

, 2013
This thesis discusses development of new semiconductor quantum dot (QD) devices and materials. Optical spectroscopy of single QDs is employed in order to investigate electronic structure and magnetic properties of these materials.
Puebla Nunez, Jorge Luis
core  

Some experiments in optical pumping

, 2017
The work reported in this thesis consists of an investigation into three aspects of optical pumping in Helium. Optical pumping in He⁴ This work was initially directed towards repeating the observations of Colegrove and Franken (ref.
Greenhow, Rod C.
core   +1 more source

Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition

Advanced Engineering Materials, EarlyView.
A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley   +1 more source

All-Optical Broadband QDs Semiconductor Optical Amplifier (QDs-SOA): Inhomogeneous Broadening

IEEE Access
The escalating demand for increased traffic capacity and bandwidth in communication networks has spurred the exploration of innovative solutions. This article delves into the promising features of Quantum Dot Semiconductor Optical Amplifiers (QD-SOAs ...
Mahdiyeh Eyvazi, Reza Yadipour, Ali Rostami   +2 more
doaj   +1 more source

On the location and structure of the artificial 630-nm airglow patch over Sura facility [PDF]

, 2007
International audienceResults are presented of the artificial optical emission of the atomic oxygen red line (the radiation of level O(1D) with a wavelength of 630 nm) from the HF-pumped ionosphere, obtained in September 2004 at the SURA heating facility
Atroshenko, M. A., Grach, S. M., Kotov, P. V., M. A. Atroshenko, Yashnov, V. A., Kosch, M. J., Sergeev, E. N., M. J. Kosch, S. M. Grach, P. V. Kotov, E. N. Sergeev, V. A. Yashnov   +11 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Optical spin pumping in silicon

Physical Review Research
The optical generation of an out-of-equilibrium spin population is a keystone process for quantum technologies and spintronics alike. Although this is an established technique for studying direct band-gap semiconductors, it has been proven limited in ...
Stefano Achilli, Damiano Marian, Mario Lodari, Luca Moreschini, Emiliano Bonera, Giordano Scappucci, Jacopo Pedrini, Michele Virgilio, Fabio Pezzoli   +8 more
doaj   +1 more source

Optical tuning of vertical-cavity surface-emitting laser side-pumped neodymium-doped yttrium aluminum garnet laser cavity

High Power Laser Science and Engineering
High-power 808 nm vertical-cavity surface-emitting laser (VCSEL) chips have unique characteristics for neodymium-doped yttrium aluminum garnet (Nd:YAG) laser pumping compared with conventional edge-emitting laser bars, including a chip surface with high ...
Yang Li, Chuanchuan Li, Xiaolang Qiu, Chongxian Yuan, Yongli Wang, Xin Wei, Lianghui Chen   +6 more
doaj   +1 more source