Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Alexandra Stefanescu"'
Autor:
A. Kostopoulos, George Boldeiu, George Konstantinidis, Alexandra Stefanescu, G. Stavrinidis, Ioana Giangu, Adrian Dinescu, Antonis Stavrinidis, Alexandru Muller, Gina C. Adam
Publikováno v:
IEEE Sensors Journal. 17:7383-7393
This paper presents the fabrication and characterization of a GHz operating surface acoustic wave (SAW)-based pressure sensor on a 1.2- $\mu \text{m}$ -thin GaN membrane. Two types of interdigitated transducers are manufactured using electron beam na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21424b071dab143aa2af82234e65479a
https://doi.org/10.1109/jsen.2017.2757770
https://doi.org/10.1109/jsen.2017.2757770
Autor:
Lăcrămioara Popa, Maricica Hodorogea, Alice Geanina Simonca, Elena Danila, Stefania Marin, Minodora Maria Marin, Mihaela Violeta Ghica, Madalina Georgiana Albu, Stefan Voicu, Geanina Alexandra Stefanescu
Publikováno v:
Key Engineering Materials. 695:309-316
A lot of biomaterials were investigated as suitable scaffolds for wound healing, very high costs being involved for treating their complications and consequences. Among them, a special attention is given to collagen, a natural biopolymer which showed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d35fb46a7993e844ef2cc5282dcf4b5
https://doi.org/10.4028/www.scientific.net/kem.695.309
https://doi.org/10.4028/www.scientific.net/kem.695.309
Publikováno v:
IEEE Electron Device Letters. 37:321-324
This letter presents a comparison between the phase velocity of Al and Ti/Au metallized GaN/Si-based surface acoustic wave structures. The resonance frequency (and consequently the phase velocity) is higher for Ti/Au-based metallization, especially w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::447b6256efaf818661bec9f366826f4a
https://doi.org/10.1109/led.2016.2521431
https://doi.org/10.1109/led.2016.2521431
Publikováno v:
2018 Asia-Pacific Microwave Conference (APMC).
In this paper we report a method for 0-level encapsulation using thin films deposition at temperatures below 200°C. The packaging method allows the use of photoresist as sacrificial layer, which facilitates sacrificial layer removal, being compatibl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82730fde1f72067f5fcaba3e1705dba5
https://doi.org/10.23919/apmc.2018.8617129
https://doi.org/10.23919/apmc.2018.8617129
Autor:
Alexandru Muller, Antonis Stavrinidis, Adrian Dinescu, Alexandra Stefanescu, Ioana Giangu, George Konstantinidis, G. Stavrinidis
Publikováno v:
IEEE Electron Device Letters. 36:1299-1302
This letter investigates the applicability of Sezawa propagation mode for various GaN/Si surface acoustic wave (SAW) temperature sensor structures. First, different acoustic propagation modes in GaN on Si single SAW resonators, operating at GHz frequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0e52e50f99008928d71269ccc2da9e3
https://doi.org/10.1109/led.2015.2494363
https://doi.org/10.1109/led.2015.2494363
Autor:
Alexandra Stefanescu, Dan Vasilache, Saurabh Sinha, Saurabh Chaturvedi, Mladen Bozanic, Ioana Giangu
Publikováno v:
2017 International Semiconductor Conference (CAS).
A radio frequency (RF) microelectromechanical systems (MEMS) shunt cantilever is simulated using the Keysight Technologies Advanced Design System up to 65 GHz The electrical and RF performances of the fabricated switch are discussed. The RF simulatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2c225a7ca16e2f66b9a7fe85eb0fa2f
https://doi.org/10.1109/smicnd.2017.8101222
https://doi.org/10.1109/smicnd.2017.8101222
Autor:
Ioana Giangu, G. Stavrinidis, Mircea Pasteanu, Alexandru Muller, Alexandra Stefanescu, George Konstantinidis, Antonis Stavrinidis, Adrian Dinescu
Publikováno v:
2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS).
This paper describes the experimental development of membrane supported single SAW resonator sensor structures, operating in the 4–12 GHz frequency range. The sensors are manufactured on GaN/Si, using advanced nano-lithographic and micromachining t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f14cd3374529a411e78e0bbda55b833
https://doi.org/10.1109/transducers.2017.7994238
https://doi.org/10.1109/transducers.2017.7994238
Autor:
Alexandra Stefanescu, Gabriela Ciuprina, Aurel-Sorin Lup, Dan Vasilache, Anton Duca, Daniel Ioan, Michael Kraft
Publikováno v:
2017 10th International Symposium on Advanced Topics in Electrical Engineering (ATEE).
This contribution proposes a method to extract parametric reduced models that describe the coupled structural-electric behavior of RF MEMS switches. The equivalent capacitance coefficients and the effective elastic coefficients are extracted from cou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::535d465a12bd17d3b648f57e723e0fda
https://doi.org/10.1109/atee.2017.7905052
https://doi.org/10.1109/atee.2017.7905052
Autor:
A. Modoveanu, G. Stavrinidis, Ioana Giangu, Alexandru Muller, Valentin Buiculescu, Adrian Dinescu, Alexandra Stefanescu, Antonis Stavrinidis, Alina Cismaru, George Konstantinidis
Publikováno v:
Sensors and Actuators A: Physical. 209:115-123
The paper presents the manufacturing and characterization of GaN based SAW (surface acoustic wave) type temperature sensors. In contrast with most SAW sensor structures, manufactured on classical piezoelectric materials where delay lines or two port
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03653fb4f7c81c173383a603ed03ce3c
https://doi.org/10.1016/j.sna.2014.01.028
https://doi.org/10.1016/j.sna.2014.01.028
Autor:
Aurel-Sorin Lup, Alexandra Stefanescu, Gabriela Ciuprina, Ruxandra Barbulescu, Daniel Ioan, Mihai Octavian Popescu
Publikováno v:
2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES).
This paper proposes a fast and accurate order reduction algorithm for the extraction of compact macromodels for electrostatic actuated micro-electro-mechanical (MEMS) switches used in radio-frequency (RF) applications. The algorithm uses as input the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14f6822cbe5e2487c3a741037028da90
https://doi.org/10.1109/icpeices.2016.7853254
https://doi.org/10.1109/icpeices.2016.7853254