Results 241 to 250 of about 65,256 (288)

Atomic precision imaging with an on-chip scanning tunneling microscope integrated into a commercial ultrahigh vacuum STM system

Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, 2021
In this article, we replace the Z axis of the piezotube of a conventional Ultrahigh-Vacuum (UHV) Scanning Tunneling Microscope (STM) with a one-degree-of-freedom Microelectromechanical-System (MEMS) nanopositioner. As a result, a hybrid system is realized in which motions in the XY plane are carried out by the piezotube, while the MEMS device performs ...
Afshin Alipour, S. O. Reza Moheimani, James H. G. Owen, Ehud Fuchs, John N. Randall   +4 more
openaire   +2 more sources

On-chip atomic force microscopy: Mechatronic system design and control

2016 American Control Conference (ACC), 2016
The atomic force microscope (AFM) has been recognized as an invaluable tool for researchers working in a wide range of nanotechnology-related fields. The AFM is a mechatronic microscope that is able to interrogate the surface of physical samples to produce 3D images with atomic resolution.
S. O. Reza Moheimani, Michael G. Ruppert, Mohammad Maroufi, Anthony G. Fowler   +3 more
openaire   +2 more sources

Deep silicon cell fabrication for chip-scale atomic sensors

Quantum West, 2023
Using a simple and cost-effective water-jet process, we have overcome silicon etch depth limitations to realize a 6 mm deep atomic vapor cell. We have successfully used this approach to demonstrate a two-chamber geometry by including a 25 mm meandering ...
J. McGilligan, S. Dyer, P. Griffin, A. Arnold, E. Riis   +4 more
semanticscholar   +1 more source

A chip-scale atomic resonator-based stabilization system for optoelectronic oscillator

2014 IEEE International Frequency Control Symposium (FCS), 2014
The optoelectronic oscillator (OEO) uses an optical energy storage element to achieve high quality microwave signals which are spectrally pure. But in some applications, the stability loss and large physical size become considerable problems. To solve these problems, we present an approach of building chip-scale atomic resonator-based stabilization ...
Zhang Shuangyou, Chen Zheng, Zhao Jianye
openaire   +2 more sources

Wavelength tuning robustness optimization for a high-temperature single-mode VCSEL used in chip-scale atomic sensing systems

Applied Optics, 2022
In this paper, the wavelength current tuning characteristics of high-temperature-operation single-mode vertical-cavity surface-emitting lasers (VCSELs) for chip-scale atomic sensing systems are studied. Excellent wavelength current tuning robustness is helpful to improve the stability of atomic sensing systems.
Yinli Zhou, Xing Zhang, Jianwei Zhang, Jinjiang Cui, Yongqiang Ning, Yugang Zeng, Lijun Wang   +6 more
openaire   +2 more sources

Atomic Streaming: A Framework of On-Chip Data Supply System for Task-Parallel MPSoCs

IEEE Computer Architecture Letters, 2012
State of the art fabrication technology for integrating numerous hardware resources such as Processors/DSPs and memory arrays into a single chip enables the emergence of Multiprocessor System-on-Chip (MPSoC). Stream programming paradigm based on MPSoC is highly efficient for single functionality scenario due to its dedicated and predictable data supply
Ji Kong, Peilin Liu, Yu Zhang
openaire   +2 more sources

Influence of architecture and temperature of alkali atom vapor cells on absorption spectra

Journal of Semiconductors, 2022
Chip-sized alkali atom vapor cells with high hermeticity are successfully fabricated through deep silicon etching and two anodic bonding processes. A self-built absorption spectrum testing system is used to test the absorption spectra of the rubidium ...
Yali Liu, Wei Li, Yudong Li, Xiaokuan Li, Liangsen Feng, Xinliang Li   +5 more
semanticscholar   +1 more source

GaN laser diodes for cold-atom sensing, optical atomic clocks and precision metrology

Security + Defence, 2022
Quantum technologies containing key GaN laser components will enable a new generation of precision sensors, optical atomic clocks and secure communication systems for many applications such as next generation navigation, gravity mapping and timing since ...
S. Najda, P. Perlin, T. Suski, S. Stanczyk, A. Kafar, M. Leszczynski, D. Schiavon, T. Slight, S. Gwyn, S. Watson, A. Kelly, M. Knapp, M. Haji   +12 more
semanticscholar   +1 more source

Design and construction of a transportable quantum gravimeter and realization of an atom-chip magnetic trap

, 2019
The quantum gravimeter QG-1 is designed to perform local gravity measurements in field with residual uncertainties surpassing state-of-the-art absolute gravimeters.
Maral Sahelgozin
semanticscholar   +1 more source

System-level integration of a chip-scale atomic clock: microwave oscillator and physics package

2006 Multiconference on Electronics and Photonics, 2006
We report on our progress in developing a prototype chip-scale atomic clock and describe the integration of the local oscillator and the physics package. A discussion of the design and results is given with a focus on frequency stability, size, and power consumption. Finally, we suggest methods to improve reliability.
Vladislav Gerginov, Svenja Knappe, A. Brannon, John Kitching, Zoya Popovic   +4 more
openaire   +2 more sources