Results 71 to 80 of about 32,417 (310)

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

A Large Area Fiber Optic Gyroscope on multiplexed fiber network [PDF]

, 2013
We describe a fiber optical gyroscope based on the Sagnac effect realized on a multiplexed telecom fiber network. Our loop encloses an area of 20 km2 and coexists with Internet data traffic.
LEVI, FILIPPO, G. A. Costanzo, Levi, F., Costanzo, Giovanni Antonio, A. Mura, Pizzocaro, Marco, CALONICO, DAVIDE, M. Pizzocaro, D. Calonico, Clivati, Cecilia, Calonico, D., C. Clivati, F. Levi, Mura, A.   +13 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Research on the Frequency Stabilization System of an External Cavity Diode Laser Based on Rubidium Atomic Modulation Transfer Spectroscopy Technology

Photonics
To achieve high-frequency stability on the external cavity diode laser (ECDL), a 780 nm ECDL serves as the seed light source, and its frequency is precisely locked to the saturated absorption peak of rubidium (Rb) atoms using modulation transfer ...
Yueyang Wu, Fangjun Qin, Zhichao Ding, Rui Xu, Dongyi Li   +4 more
doaj   +1 more source

A vibration modulation method for natural mode measurement of external-cavity diode laser

AIP Advances, 2018
A vibration modulation method is introduced for natural mode measurement of external-cavity diode laser. The detuning power spectrum of the Fabry-Perot resonator is investigated by actively driving frequency range (0 ∼3 kHz) acoustic field to provide a ...
Wei Quan, Sizhe Liu, Yueyang Zhai
doaj   +1 more source

Long-term frequency stability of three absolutely referenced lasers at 1547.8 nm located at different places which were separated by 30 Km

, 2022
S.206-211The relative optical frequency stabilities of three optical reference units at 1547.82 nm were examined. The reference units were located at different places in Berlin and connected via several kilometres of optical fibre.
Fischer, U.H.P., Giehmann, L., Rocks, M., Gladisch, A., Helmolt, C. von   +4 more
core  

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Modulation-free laser frequency stabilization via balanced detection of common-path Fano resonance in all-PM fiber cavity

APL Photonics
Laser frequency stabilization is indispensable for extensive applications involving precision measurements, and the best performance has been achieved with the Pound–Drever–Hall technique. However, it relies on a bulky ultrastable Fabry–Pérot cavity with
Jiehao Wang, Yuhang Li, Yiting Chen, Shuyang He, Qiang Liu   +4 more
doaj   +1 more source

Sub-megahertz laser stabilization by harnessing orthogonality between the acousto-optic modulator dither and atomic spectroscopy

Results in Optics
A sub-MHz frequency stability of the laser is crucial in the quantum-atom experiment where precise atomic transition is required for control and manipulation of atom like in the atom quantum computing.
Phatwarach Siriworakoonchai, Parinya Udommai, Nuttanan Tanasanchai, Waranont Anukool   +3 more
doaj   +1 more source

A Knowledge‐Based Approach for Understanding and Managing Additive Manufacturing Data

Advanced Engineering Materials, EarlyView.
Additive manufacturing processes generate a large amount of data. Effectively managing, understanding, and retrieving information from this data remains a major challenge. Therefore, we propose an ontology‐based approach to integrate heterogeneous data, enable semantic queries, and support decision‐making.
Mina Abd Nikooie Pour, Prithwish Tarafder, Anton Wiberg, Huanyu Li, Johan Moverare, Patrick Lambrix   +5 more
wiley   +1 more source