Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Cyrus Shafai"'
Publikováno v:
Sensors, Vol 24, Iss 9, p 2743 (2024)
MEMS electrostatic actuators can suffer from a high control voltage and a limited displacement range, which are made more prevalent by the pull-in effect. This study explores a tri-electrode topology to enable a reduction in the control voltage and e
Externí odkaz:
https://doaj.org/article/0d73e0e98728400a906141ae90bbfedd
Autor:
Tao Chen, Cyrus Shafai
Publikováno v:
Sensors, Vol 24, Iss 2, p 439 (2024)
Micromachined electric field mills have received much interest for the measurement of DC fields; however, conventional designs with lateral moving shutters could have shutter lifting in the presence of strong fields, which affects their performance.
Externí odkaz:
https://doaj.org/article/c76f9ff02cd44e32a6326c462a59082a
Publikováno v:
Materials Research Express, Vol 10, Iss 12, p 125703 (2023)
Flexible polymer piezoelectric materials are of interest in electro-mechanical applications; however, the mechanical and electrical properties of these materials can be affected by their formation. In this study vibrational analysis was performed to
Externí odkaz:
https://doaj.org/article/dc83a91735fb47f3b46e327ab9d197f8
Publikováno v:
Sensors, Vol 23, Iss 2, p 846 (2023)
This paper investigates the miniaturization capability of split ring array antennas embedded in a low-permittivity dielectric substrate, in comparison with the same-sized high-permittivity dielectric resonator antennas (DRAs). In order to understand
Externí odkaz:
https://doaj.org/article/cbabd3c770744bd8aea02ea1b6999b2a
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 1, Pp 1-16 (2017)
Fabricating materials with specific refractive indices, which do not naturally exist in the nature, has always been an issue. This paper presents a method for fabricating SiOx films with specified refractive index. It is well known that the refractiv
Externí odkaz:
https://doaj.org/article/e7886193a4ad47c59590479079881515
Autor:
Yu Zhou, Cyrus Shafai
Publikováno v:
Sensing and Bio-Sensing Research, Vol 9, Iss , Pp 31-37 (2016)
This paper describes the design optimization of a micromachined electric field mill, in relation to maximizing its output signal. The cases studied are for a perforated electrically grounded shutter vibrating laterally over sensing electrodes. It is
Externí odkaz:
https://doaj.org/article/d46b38693d6742c1a7c61a41f06eb68c
Publikováno v:
Proceedings, Vol 2, Iss 13, p 938 (2018)
A 3 Degree-of-Freedom (DOF) MEMS mirror is presented which can direct the light beam on an objective point and also operate in a continuous resonance 2 DOF mode. The micro-mirror is actuated by Lorentz force and has 4 actuators embedded in 4 sides of
Externí odkaz:
https://doaj.org/article/2408a9e9bcc94ba99629bfbed3757fd4
Publikováno v:
Proceedings, Vol 2, Iss 13, p 928 (2018)
Employing a tri-electrode topology for electrostatic actuators can significantly reduce needed control voltages. The tri-electrode topology employs a perforated intermediate electrode between the MEMS structure and pull-down electrode, and provides a
Externí odkaz:
https://doaj.org/article/b11773895b8d4f95a877b1c0c4d0df02
Publikováno v:
Proceedings, Vol 1, Iss 4, p 563 (2017)
This work presents the design and simulation of a MEMS-controllable linear motion Fresnel Zone Plate (FZP). The focal length of an FZP is a function of incident wavelength. This principle can be used for separating wavelengths, enabling a spectromete
Externí odkaz:
https://doaj.org/article/d5301649567e47edae82acc2b6859ca9
Publikováno v:
Proceedings, Vol 1, Iss 4, p 350 (2017)
A MEMS electric field sensor is presented with wide measurement resolution and adjustable sensitivity. The sense membrane is mounted using torsional springs and employs opposite biased electrodes on its surface, causing rotation in presence of an ele
Externí odkaz:
https://doaj.org/article/3b6247f4b9434274984f61218006acd7