Results 71 to 80 of about 28,721 (300)

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

Advanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud, Jakob Gruber, Hakan Göçerler, Pierluigi Bilotto, Christian Gierl‐Mayer, Elham Loni, Michael Naguib, Carsten Gachot   +7 more
wiley   +1 more source

16-channel SiPM high-frequency readout with time-over-threshold discrimination for ultrafast time-of-flight applications

EJNMMI Physics, 2023
Background Over the past five years, ultrafast high-frequency (HF) readout concepts have advanced the timing performance of silicon photomultipliers (SiPMs).
Vanessa Nadig, Matthias Hornisch, Jakob Oehm, Katrin Herweg, Volkmar Schulz, Stefan Gundacker   +5 more
doaj   +1 more source

Digital radio over fibre for future broadband wireless access network solution [PDF]

, 2010
Copyright @ 2010 IEEEDigital systems are more flexible and environment-process-tolerant than analogue systems. They are more reliable and robust against cross-talk, interference and channel noises, and are capable of covering higher dynamic range than ...
Abdollahi, SR, Al-Raweshidy, H, Mehdi Fakhraie, S, Nilavalan, R   +3 more
core   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Cooling Fiber Laser Power Converter Systems by Immersion in Oil

Photonics
We demonstrate the use of Laser Power Converters (LPCs) driven by fiber laser light while immersed in transformer oil for heat management purposes. Reliability tests performed via extended continuous operation using 6–7 W of input power from 808 nm and ...
Denis Masson, Simon Fafard
doaj   +1 more source

Low-Complexity Time-Domain Averaging-Based DAC Clock Tone Leakage Compensation for Short-Reach PAM4 Transmission

IEEE Photonics Journal, 2020
High sampling-rate digital-to-analog converters (DAC) are usually applied in optical fiber communication systems for the signal generation with advanced modulation formats such as four-level pulse amplitude modulation (PAM4).
Ming Chen, Long Zhang, Hui Zhou, Qinghui Chen   +3 more
doaj   +1 more source

Thermoelectric Modules Incorporating MgAgSb and Mg3(Sb,Bi)2 Synthesized Using a Melting Method

Advanced Engineering Materials, EarlyView.
A scalable synthesis method for a thermoelectric material of MgAgSb is established. A thermoelectric power module of MgAgSb/Mg3(Sb,Bi)2 is fabricated, showing the conversion efficiency of 7.4% at ΔT = 315 K. The performance is comparable to conventional Bi2Te3 modules when they are operated with an air‐cooled heat exchanger.
Kazuo Nagase, Hironori Ohshima, Kunihiro Kihou, Haruno Kunioka, Ushin Anazawa, Ryosuke Sakagami, Yosuke Goto, Masayuki Murata, Chul‐Ho Lee   +8 more
wiley   +1 more source

A reflective sapphire@PiGF@alumina color converter enabling ultrahigh luminescence laser-driven white lighting

Journal of Advanced Ceramics
High-brightness laser lighting faces grave challenges in the development of laser-driven color converters that simultaneously possess excellent optical performance and superior heat dissipation.
Xinyuan Wang, Jingxiang Qu, Hongjin Zhang, Deyi Chen, Ben Tian, Yun Mou, Jianming Xu, Yang Peng   +7 more
doaj   +1 more source

Broadband white light emission from Ce:AlN ceramics: High thermal conductivity down-converters for LED and laser-driven solid state lighting

APL Materials, 2016
We introduce high thermal conductivity aluminum nitride (AlN) as a transparent ceramic host for Ce3+, a well-known active ion dopant. We show that the Ce:AlN ceramics have overlapping photoluminescent (PL) emission peaks that cover almost the entire ...
A. T. Wieg, E. H. Penilla, C. L. Hardin, Y. Kodera, J. E. Garay   +4 more
doaj   +1 more source

A high-resolution burst-mode laser transmitter with fast and accurate level monitoring for 1.25 Gb/s upstream GPONs [PDF]

, 2005
A
Bauwelinck, Johan, Chen, Wei, Martens, Yves, Ossieur, Peter, Qiu, Xing-Zhi, Vandewege, Jan, Verhulst, Dieter   +6 more
core   +2 more sources