Zobrazeno 21 - 30
of 273
pro vyhledávání: '"Ashwin A. Seshia"'
Autor:
Ashwin A. Seshia
Publikováno v:
2021 IEEE International Ultrasonics Symposium (IUS).
Phononic frequency combs are mechanical response features evidenced as a series of equispaced discrete spectral lines. These features have been experimentally observed in a multitude of microelectromechanical devices confirming theoretical prediction
This paper reports on the experimental characterization of a vacuum packaged bulk acoustic wave disk gyroscope with T-shape anchors fabricated on a (100) single-crystal silicon substrate. Improvements in key device performance parameters are achieved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e6e2c6efdf73bc08f308557ef96db2b
This paper reports experimental results demonstrating excellent short-term frequency stability of 45.6 µLHz (36 ppt@0.4 s integration time) for a bulk acoustic wave (BAW) silicon disk resonator oscillator. The n=4 radial mode of a BAW disk resonator
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0687bb402e800eac344f43a93e2edba
Publikováno v:
2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers).
This paper presents a new mechanism of vibration energy harvesting via the generation of frequency combs due to nonlinear modal interactions. A frequency comb is characterized by multiple discrete spectral lines resulting from a single excitation fre
Autor:
Madan Parajuli, Jiangkun Sun, Milind Pundit, Chun Zhao, Guillermo Sobreviela, Hemin Zhang, Dongyang Chen, Ashwin A. Seshia
Publikováno v:
2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers).
The principle of vibration mode localization has been been researched in recent years as an approach towards the high accuracy transduction of inertial forces. This transduction scheme comprises of two or more weakly coupled resonators and a low coup
Autor:
Callisto Pili, Colin Baker, Chun Zhao, Milind Pandit, Douglas Young, Guillermo Sobreviela, Philipp Steinmann, Ashwin A. Seshia
Publikováno v:
2021 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL).
Optimization of the oscillator front-end for resonant sensors is critical to addressing key metrics such as noise floor and output stability. This paper reports a method to improve the noise floor of resonant MEMS accelerometers by avoiding aliasing
Publikováno v:
Journal of Microelectromechanical Systems. 28:182-188
In this paper, energy localization within weakly coupled nonlinear MEMS resonators has been utilized for sensing applications. The sensitivity and the noise floor of the weakly coupled resonators operating beyond the critical amplitude have been char
Publikováno v:
IEEE Transactions on Power Electronics. 34:263-274
Piezoelectric vibration energy harvesting has drawn much research interest over the last decade towards the goal of enabling self-sustained wireless sensor nodes. In order to make use of the harvested energy, interface circuits are needed to rectify
Autor:
Lior Medina, Ashwin A. Seshia
Publikováno v:
European Journal of Mechanics - A/Solids. 92:104460
A stability study of a micro-meta-structure (MMS), composed of two double clamped, initially curved micro beams, coupled via a rigid truss at their respective centres, is studied via a reduced order (RO) model when subjected to a distributed electros
Publikováno v:
Springer Berlin Heidelberg
This papers investigates device approaches towards the confinement of acoustic modes in unreleased UHF MEMS resonators. Acoustic mode confinement is achieved using specially designed mechanically coupled acoustic cavities known as acoustic Bragg Grat