Results 71 to 80 of about 722 (280)

Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment

Advanced Materials, EarlyView.
ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud, Ryan W. Spangler, Johnathan D. Georgaras, Jonah B. Haber, Daniel Hirt, Maximilian Obst, Gonzalo Álvarez‐Pérez, Mackey Long III, Felix G. Kaps, Jakob Wetzel, Courtney Ragle, John E. Buchner, Youngji Kim, Aditha S. Senarath, Richarda Niemann, Mingze He, Giulia Carini, Unai Arregui‐Leon, Akash C. Behera, Ramachandra Bangari, Nihar Sahoo, Niels C. Brumby, J. Michael Klopf, Martin Wolf, Lukas M. Eng, Susanne C. Kehr, Thomas G. Folland, Alexander Paarmann, Patrick E. Hopkins, Felipe Jornada, Jon‐Paul Maria, Joshua D. Caldwell   +31 more
wiley   +1 more source

Application of MEMS Devices in Miniaturized Rubidium Atomic Clock [PDF]

, 2012
原子钟又称原子频标，在诸多领域中发挥着重要的作用。其研究一直是各国科研的重要内容，由于传统的原子钟一直有着大尺寸和高功耗的问题，故近年来，原子钟的微小型化和低损耗是最主要的研究方向，这也是本文的研究目的。本文将对微型化铷原子钟整个物理结构系统进行设计分析，其中着重对吸收泡和激励线圈进行研究。 第一，对采用MEMS技术的Rb-87吸收泡进行研究设计。首先，在量子物理模型的基础上，推导出吸收泡出射光强与入射光强的关系式。接着，运用经典振子理论，证明Rb灯光谱的形状为Lorentzian线形。最后 ...
吴静
core  

DFB Laser Diode Pumped Rubidium Atomic Frequency Standard

, 2011
We present our recently experimental results on a DFB laser diode pumped Rubidium atomic frequency standard. Our experiment was based on a homemade lamp-pumped Rubidium frequency standard with the discharge lamp assembly removed.
Liu, S.Q., Y. Gu, Lu, Z.H., Lu, Z. H., J. Q. Huang, T. Q. Dong, X. H. Qi, J. Zhang, Qi, X.H., S. Q. Liu, Liu, S. Q., Wang, Y. H., Huang, J.Q., Dong, T. Q., Wang, Y.H., Y. H. Wang, Z. H. Lu, Qi, X. H., Gu, Y., Huang, J. Q., Zhang, J., Dong, T.Q.   +21 more
core   +1 more source

Super‐Resolution Ultrasound Based Cell Tracking With Polymeric Nanobubbles

Advanced Materials, EarlyView.
This study presents a super‐resolution ultrasound platform for tracking cells in vivo. Biocompatible polymeric nanobubbles are used as highly echogenic intracellular labels. Following the injection of cells and microbubbles, ultrasound localization microscopy (ULM) can dynamically match the microvascular architecture and individual cell trajectories ...
Junlin Chen, Xiaoyu Wang, Jilin Fan, Bi Wang, Hanghang Fang, Yurui Wang, Hao Cui, Mohammad Roufarshbaf, Ekaterina Savina, Alexandra Valeske, Quim Peña, Yang Shi, Andreas Herrmann, Twan Lammers, Mathias Hornef, Roman Barmin, Thomas Lisson, Georg Schmitz, Anne Rix, Fabian Kiessling   +19 more
wiley   +1 more source

A method for measuring the direction of the geomagnetic field to correct of the onboard rubidium atomic clock frequency using an Mz-magnetometer

St. Petersburg Polytechnical University Journal: Physics and Mathematics
The article presents a method developed by the authors for measuring the direction of a magnetic field using an MZ-type quantum magnetometer, the readings of which are used to correct the frequency of an onboard small-sized rubidium atomic clock.
Ermak Sergey, Semenov Vladimir, Sergeeva Maria   +2 more
doaj   +1 more source

Rubidium-based Atomic Clock

, 2014
In this paper we will explore the process of building an atomic clock from a function generator, go into an in-depth introductory discussion of the Datum LPRO, and examine how rubidium function generators ...
Miles, Kate
core  

Double-resonance spectroscopy in Rubidium vapour-cells for high performance and miniature atomic clocks

, 2017
We report our studies on using microwave-optical double-resonance (DR) spectroscopy for a high-performance Rb vapour-cell atomic clock in view of future industrial applications.
M Gharavipour, Gharavipour, Mohammadreza, S Kang, C Affolderbach, Kang, S, G Mileti, Mileti, Gaetano, Affolderbach, Christoph   +7 more
core   +1 more source

Low Resistance Interphase Formation at the PEO‐LiTFSI|LGPS Interface in Lithium Solid‐State Batteries

Advanced Materials Interfaces, EarlyView.
Interfacial charge transfer and low‐resistance interphase formation between PEO‐based polymer and Li10GeP2S12 solid electrolytes are investigated using multi‐electrode impedance spectroscopy and advanced analytical techniques such as XPS and ToF‐SIMS.
Ujjawal Sigar, Timo Weintraut, Sebastian L. Benz, Semih Engün, Sascha Kremer, Anja Henss, Felix H. Richter   +6 more
wiley   +1 more source

Mechanical Stress Evolution in Polycrystalline Ge Thin Films Under MeV Ion Irradiation

Advanced Materials Interfaces, EarlyView.
Irradiation of polycrystalline Ge thin films with 1.8 MeV Au ions alters residual stress through defect generation and lattice expansion. Increasing fluence drives progressive lattice disorder and eventual amorphization. Polycrystalline Ge resists amorphization longer than crystalline Ge, as grain boundaries facilitate defect diffusion, significantly ...
Karla J. Paz Corrales, Aaron Reupert, Kevin Lubig, Frank A. Müller, Berit Marx‐Glowna, Ralf Röhlsberger, Till Weickhardt, Giancarlo Soavi, Martin Hafermann, Elke Wendler, Carsten Ronning   +10 more
wiley   +1 more source

Characteristics of BeiDou-3 Experimental Satellite Clocks

Remote Sensing, 2018
The characteristics of the improved Atomic Frequency Standard (AFS) operated on the latest BeiDou-3 experimental satellites are analyzed from day-of-year (DOY) 254 to 281, of the year 2017, considering the following three aspects: stability, periodicity,
Yifei Lv, Tao Geng, Qile Zhao, Jingnan Liu   +3 more
doaj   +1 more source