Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Cristian Viespe"'
Autor:
Monica Scarisoreanu, Izabela Constantinoiu, Evghenii Goncearenco, Iuliana P. Morjan, Valentin Serban Teodorescu, Cristian Viespe
Publikováno v:
Chemosensors, Vol 12, Iss 8, p 160 (2024)
TiO2 nanoparticles (NPs) doped with W (W:TiO2), double-doped with W and V (W&V:TiO2), and loaded with noble metals (W:TiO2 @Pt/Pd/Ag and W&V:TiO2@Pt/Pd/Ag) were synthesized by laser pyrolysis followed by chemical impregnation and reduction. Due to it
Externí odkaz:
https://doaj.org/article/539cb2cdeefc4fb79634ddf348c5bb28
Autor:
Nicoleta Enea, Valentin Ion, Cristian Viespe, Izabela Constantinoiu, Anca Bonciu, Maria Luiza Stîngescu, Ruxandra Bîrjega, Nicu Doinel Scarisoreanu
Publikováno v:
Nanomaterials, Vol 14, Iss 1, p 39 (2023)
Thin film technology shows great promise in fabricating electronic devices such as gas sensors. Here, we report the fabrication of surface acoustic wave (SAW) sensors based on thin films of (1 − x) Ba(Ti0.8Zr0.2)O3−x(Ba0.7Ca0.3)TiO3 (BCTZ50, x =
Externí odkaz:
https://doaj.org/article/66701157ac184a86a9d539ad97615db8
Autor:
Sorin Vizireanu, Izabela Constantinoiu, Veronica Satulu, Silviu Daniel Stoica, Cristian Viespe
Publikováno v:
Chemosensors, Vol 11, Iss 11, p 566 (2023)
We have developed surface acoustic wave (SAW) sensors with high sensitivity and a reversible response at room temperature (RT). The sensitive area of the sensor was prepared from vertically aligned graphene sheets, like carbon nanowalls (CNWs), which
Externí odkaz:
https://doaj.org/article/37b17169eec247889c1213a5530d9d0f
Autor:
Nicoleta Enea, Valentin Ion, Cristian Viespe, Izabela Constantinoiu, Octavian Buiu, Cosmin Romanitan, Nicu Doinel Scarisoreanu
Publikováno v:
Materials, Vol 15, Iss 23, p 8452 (2022)
In this study we report the specific interaction of various gases on the modified surface of acoustic wave devices for gas sensor applications, using the piezoelectric ceramic material BaSrTiO3 (BST), with different concentrations of Sr. For enhancin
Externí odkaz:
https://doaj.org/article/215b9889d4ff47acbe2034040d3604cf
Publikováno v:
Materials, Vol 15, Iss 22, p 8012 (2022)
Pd/SnO2 bilayers for surface acoustic wave (SAW) sensors were obtained using pulsed laser deposition (PLD). Bilayers were made at several deposition pressures in order to observe the influence of the morphology of the sensitive films on the response
Externí odkaz:
https://doaj.org/article/2749e41d4d67445f8f31591988170e70
Publikováno v:
Nanomaterials, Vol 11, Iss 10, p 2598 (2021)
Laser deposition was used to obtain Pd/ZnO bilayers, which were used as sensing layers in surface acoustic wave (SAW) sensors. The effect of laser deposition parameters such as deposition pressure, laser energy per pulse, laser wavelength or pulse du
Externí odkaz:
https://doaj.org/article/4ca8a277fc824e43b8a1a31805d4ee06
Autor:
Izabela Constantinoiu, Cristian Viespe
Publikováno v:
Sensors, Vol 21, Iss 17, p 5758 (2021)
The development of hydrogen sensors has acquired a great interest from researchers for safety in fields such as chemical industry, metallurgy, pharmaceutics or power generation, as well as due to hydrogen’s introduction as fuel in vehicles. Several
Externí odkaz:
https://doaj.org/article/c84e01f3ccb949e6927bf334e1c27b4f
Publikováno v:
Chemosensors, Vol 9, Iss 7, p 173 (2021)
Laser-deposited gold immobilization layers having different porosities were incorporated into love wave surface acoustic wave sensors (LW-SAWs). Variation of pulsed laser deposition parameters allows good control of the gold film morphology. Biosenso
Externí odkaz:
https://doaj.org/article/361d256d3c80456fa32e0db75a1548cc
Autor:
Izabela Constantinoiu, Cristian Viespe
Publikováno v:
Sensors, Vol 20, Iss 18, p 5118 (2020)
Surface acoustic wave (SAW) gas sensors are of continuous development interest to researchers due to their sensitivity, short detection time, and reliability. Among the most used materials to achieve the sensitive film of SAW sensors are metal oxide
Externí odkaz:
https://doaj.org/article/c23cff7a12d64b98bb3a5737e20358e0
Autor:
Izabela Constantinoiu, Cristian Viespe
Publikováno v:
Nanomaterials, Vol 10, Iss 4, p 760 (2020)
The influence of sensitive porous films obtained by pulsed laser deposition (PLD) on the response of surface acoustic wave (SAW) sensors on hydrogen at room temperature (RT) was studied. Monolayer films of TiO2 and bilayer films of Pd/TiO2 were depos
Externí odkaz:
https://doaj.org/article/bf8fe99282534e5db7652753f1e7923a