Results 41 to 50 of about 2,131 (218)

Widely Tunable Pulse Duration 100 mJ Single-Mode MOPA System Based on Yb-Doped Tapered Double-Clad Fiber and Nd:YAG Solid-State Amplifiers

Photonics
We report on a 1064 nm master oscillator power amplifier (MOPA) system based on pulse-modulated laser diode seed sources combined with fiber preamplifiers and a Yb-doped tapered double-clad fiber (T-DCF) amplifier used as an all-fiber master oscillator ...
Mikhail Kozlyakov, Andrey Petrov, Grigoriy Mikhailovskiy   +2 more
doaj   +1 more source

DOI-PET Imaging Investigation Based on 3-D Cross-Strip Cadmium Zinc Telluride Detector

Journal of Isotopes, 2022
To study the PET imaging performance of cross-strip cadmium zinc telluride detector with a size of 16.4 mm×16.4 mm×5 mm, which can determine the 3-D position information of 511 keV gamma photons.
LI Yingguo;CUI Zhencun;GUO Dian;LIU Meilou;WEN Jing;ZHANG Qinghua;PEI Changxu;HUANG Chuan;YIN Yongzhi;LI Gongping
doaj  

Parasitic Stimulated Amplification in High-Peak-Power and Diode-Seeded Nanosecond Fiber Amplifiers

IEEE Photonics Journal, 2014
The broadband parasitic amplification in a diode-seeded nanosecond ytterbium-doped fiber laser amplifier system is numerically and experimentally investigated.
C. L. Chang, P. Y. Lai, Y. Y. Li, Y. P. Lai, C. W. Huang, S. H. Chen, Y. W. Lee, S. L. Huang   +7 more
doaj   +1 more source

Apsu: a wireless multichannel receiver system for surface nuclear magnetic resonance groundwater investigations [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2019
Surface nuclear magnetic resonance (surface NMR) has the potential to be an important geophysical method for groundwater investigations, but the technique suffers from a poor signal-to-noise ratio (SNR) and long measurement times.
L. Liu, D. Grombacher, E. Auken, J. J. Larsen   +3 more
doaj   +1 more source

Drop‐Location‐Insensitive Droplet‐Based Electricity Generator Using Polydimethylsiloxane Slippery Covalently Attached Liquid Coatings

Advanced Science, EarlyView.
Drop‐location sensitivity remains a key barrier to practical droplet‐based electricity generators (DEGs). Here, a polydimethylsiloxane slippery covalently attached liquid (PDMS‐SCAL)‐coated interface promotes droplet sliding instead of splitting or bouncing, allowing stable electricity generation from randomly falling raindrops. The resulting PDMS‐SCAL‐
Jung Bin Yang, Donghyeon Yoo, Hideaki Teshima, Donghan Lee, Dongwhi Choi, Dong Rip Kim, Nenad Miljkovic   +6 more
wiley   +1 more source

Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors

Advanced Science, EarlyView.
A MoTe2/WSe2/Cl–SnSe2 unipolar barrier photodetector is demonstrated, in which the WSe2 layer effectively blocks majority‐carrier injection, yielding suppressed dark current and enhanced near‐infrared (NIR) sensing. The device achieves high detectivity, a wide linear dynamic range, and fast response under 1310 nm illumination, enabling high‐fidelity 3D
Jung Pyo Hong, Sang‐Jun Kim, Jisu Jang, Je‐Jun Lee, Seong‐Jun Han, Eungseon Yeon, Jung Woo Kim, Jongtae Ahn, Sang Yeon Kim, Hyun Woo Ko, Sunghyun Han, Seung Ah Lee, Paul Hongsuck Seo, Young‐Woo Suh, Kimoon Lee, Gunuk Wang, Dong‐Guang Zheng, Sunghee Hong, Sangin Hahn, Seon Kyu Yoon, Min‐Chul Park, Do Kyung Hwang   +21 more
wiley   +1 more source

MetaboSense: An Integrated Quantum Dot‐Mediated Aptamer Assay and Modular Microfluidic Platform for Continuous In‐Line Monitoring of Lung Metabolism During Ex Vivo Perfusion

Advanced Science, EarlyView.
MetaboSense is a first‐of‐its‐kind microfluidic platform enabling continuous, in‐line monitoring of glucose and lactate during ex vivo lung perfusion. Combining a quantum dot–mediated aptamer assay with mixing, depletion, and optofluidic detection modules, it achieves 60–s temporal resolution and shows strong agreement with standard blood gas analyzers,
Sanjana Srikant, Pouyan Keshavarz Motamed, Thomas Borrillo, Lielle Ronen, Gabriel Siebiger, Guillermo Garza, Hesam Abouali, Md Fahim Al Fattah, Ines Jaber, Dayan Ban, Marcelo Cypel, Mingyao Liu, Shaf Keshavjee, Andrew T. Sage, Mahla Poudineh   +14 more
wiley   +1 more source

The european FAZIA initiative: a high-performance digital telescope array for heavy-ion studies

EPJ Web of Conferences, 2014
The european Fazia collaboration aims at building a new modular array for charged product identification to be employed for heavy-ion studies. The elementary module of the array is a Silicon-Silicon-CsI telescope, optimized for ion identification ...
Casini G., Barlini S., Pasquali G., Pastore G., Bini M., Carboni S., Olmi A., Piantelli S., Poggi G., Stefanini A., Valdré S., Bonnet E., Borderie B., Bougault R., Bruno M., Chbihi A., Cinausero M., Degerlier M., Edelbruck P., Frankland J.D., Gramegna F., Gruyer D., Guerzoni M., Kordjasz A., Kozik T., Le Neindre N., Lopez O., Marchi T., Marini P., Morelli L., Ordine A., Pârlog M., Rivet M.F., Rosato E., Salomon F., Spadaccini G., Twaróg T., Vient E., Vigilante M.   +38 more
doaj   +1 more source

Minimally-Invasive Neural Interface for Distributed Wireless Electrocorticogram Recording Systems

Sensors, 2018
This paper presents a minimally-invasive neural interface for distributed wireless electrocorticogram (ECoG) recording systems. The proposed interface equips all necessary components for ECoG recording, such as the high performance front-end integrated ...
Sun-Il Chang, Sung-Yun Park, Euisik Yoon
doaj   +1 more source

Light‐Controlled Conductive Molecular Wire in an Artificial Lipid Membrane

Advanced Science, EarlyView.
A photochromic azobenzene derivative is shown to produce a unique photoelectric response when embedded in artificial lipid membranes. In its trans state, it forms conductive “molecular wires” that enhance membrane conductivity in the dark. Light‐induced cis isomerization suppresses this effect, showing that short‐chain molecules can modulate membrane ...
Ilaria Cardace, Lorenzo Dominici, Adriano Cola, Antonio Fieramosca, Vincenzo Ardizzone, Agostina Lina Capodilupo, Bruno Rizzuti, Milena De Giorgi, Dario Ballarini, Giuseppe Gigli, Daniele Sanvitto, Luisa De Marco   +11 more
wiley   +1 more source