Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Ashwin A. Seshia"'
Autor:
Guillermo Sobreviela, Xudong Zou, Milind Pandit, Chun Zhao, Ashwin A. Seshia, Arif Mustafazade
Publikováno v:
Journal of Microelectromechanical Systems. 30:500-505
Silicon MEMS resonators are increasingly being adopted for applications in timing and frequency control, as well as precision sensing. It is well established that a key limitation to performance is associated with sensitivity to environmental variabl
This paper demonstrates the feasibility of employing mode localized mass sensing in coupled MEMS resonators for ultra-fine particulate detection applications. The potential benefits of this approach include higher parametric sensitivity and intrinsic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7cec3df2bd37f9a5d5ff49a21713ab1
This paper reports the achievement of a mass balanced condition in a low-Q weakly coupled MEMS resonator array for ultrafine aerosol particulate sensing. The mass balancing technique enables the lifetime extension of such real-time particulate sensor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52dcec63454df9428905fc0931677c5b
Autor:
Shuchin Aeron, Ashwin A. Seshia, Sameer Sonkusale, Adarsh G. Menon, Maryam Shojaei Baghini, Laxmeesha Somappa
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 67:4556-4565
In many applications such as gravimetric sensing, there is a need to rapidly estimate the center resonant frequency of the sensor system. This paper proposes and compares different quantized analog compressive sensing approaches for rapid frequency e
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 69:7146-7157
This article presents a portable and programmable frequency measurement system (PrO-FMS) with 0.1-ppm RMSE resolution over a measurement time interval of 33.2 s for bulk-acoustic resonator applications. PrO-FMS has a feature of choosing a frequency e
Autor:
Hemin Zhang, Chun Zhao, Dongyang Chen, Ashwin A. Seshia, Milind Pandit, Guillermo Sobreviela, Madan Parajuli, Jiangkun Sun
Publikováno v:
Journal of Microelectromechanical Systems. 30:178-180
This paper reports a precision mode-localized accelerometer operating in a higher-order flexural mode. The accelerometer consists of two symmetric resonators coupled by a central rigid coupler to generate an ultra-weak coupling factor. A reduced nois
Publikováno v:
Journal of Microelectromechanical Systems. 28:782-789
A novel differential configuration of a high-resolution mode-localized resonant SOI-MEMS accelerometer is presented in this paper. An effective maximum scale factor of 11/g and a bias-stability of $2.96\mu g$ is demonstrated. A minimum noise floor of
Bulk acoustic wave gyroscopes have been researched for potential benefits such as immunity to shock and vibration and the high Q factors achievable with the bulk modes. This paper outlines an approach to address mode matching in bulk acoustic wave (B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c58345d3ccda6315dea4ce0c71bad689
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 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