Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Hani H. Tawfik"'
Publikováno v:
Micro, Vol 3, Iss 4, Pp 811-821 (2023)
This paper presents a new MEMS varactor that uses repulsive actuation to achieve an ultra-linear capacitance-to-voltage response. The approach proposed involves actuating the moveable electrode away from the fixed electrode, instead of the convention
Externí odkaz:
https://doaj.org/article/c7ab4c0e713943d4b06c0dca5e645245
Publikováno v:
Sensors, Vol 24, Iss 7, p 2297 (2024)
Ultrasonic diagnostics is the earliest way to predict industrial faults. Usually, a contact microphone is employed for detection, but the recording will be contaminated with noise. In this paper, a dataset that contains 10 main faults of pipelines an
Externí odkaz:
https://doaj.org/article/43e375d331cf4f799740d847f4479180
Autor:
Roufaida Bensalem, Animesh Saha Shovan, Juan Morency Trudel, Hani H. Tawfik, Karim Allidina, Mohannad Y. Elsayed, Mounir Boukadoum, Mourad N. El-Gamal
Publikováno v:
Sensors, Vol 22, Iss 14, p 5157 (2022)
This paper proposes a novel integrated micro-viscometer for engine-oil monitoring. The final solution consists of a capacitive micromachined ultrasonic transducer (CMUT) and an application-specific integrated circuit (ASIC). The CMUT is used to gener
Externí odkaz:
https://doaj.org/article/d0066deec1264e149fc701ba0b135e24
Publikováno v:
Micromachines, Vol 9, Iss 5, p 231 (2018)
This letter proposes a method for utilizing a positive photoresist, Shipley 1805, as a sacrificial layer for sub-180 °C fabrication process flows. In the proposed process, the sacrificial layer is etched at the end to release the structures using a
Externí odkaz:
https://doaj.org/article/47bbe8e93ed344d1ab77e31e0d9fb8d6
Publikováno v:
Sensors and Actuators A: Physical. 294:102-115
This work introduces a capacitive micromachined ultrasonic transducer (CMUT) with a reduced-gap architecture implemented in the PolyMUMPs technology. The proposed structure enables the realization of high-frequency CMUTs, for the first time in a comm
Publikováno v:
Sensors
Volume 19
Issue 24
Sensors (Basel, Switzerland)
Volume 19
Issue 24
Sensors (Basel, Switzerland)
This paper presents a novel dual-level capacitive microcantilever-based thermal detector that is implemented in the commercial surface micromachined PolyMUMPs technology. The proposed design is implemented side-by-side with four different single-leve
Publikováno v:
Sensors and Actuators A: Physical. 319:112549
This paper presents a novel operation mechanism for ultrasonic testing in-water. The mechanism employs the surface-tension forces between the water and ultrasonic probe surfaces to cause an elongation (meniscus) of the water column and thus focuses t
Publikováno v:
Journal of Microelectromechanical Systems. 20:943-958
This paper studies analytically and numerically the spring softening and hardening phenomena that occur in electrostatically actuated microelectromechanical systems comb drive resonators utilizing folded suspension beams. An analytical expression for
Publikováno v:
ICECS
This paper presents a mechanism that involves the integration of a pixel blind to infrared (IR) radiation into a focal plane array (FPA) for thermal detection. The blind pixel serves as a reference capacitor while scanning the FPA active pixels. In h
Autor:
Hani H. Tawfik, Ahmed Abdel Aziz, Sherif Sedky, Abdelhameed Sharaf, A. M. Elshurfa, Mohamed Serry
Publikováno v:
2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII).
This paper presents two novel architectures for realizing high performance bulk micromachined gyroscopes based on Silicon-on-Insulator (SOI) technology. The designs have a simulated Brownian noise floor of to 0.014 °/hr, a sensitivity 115 mV/°/s, a