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Browsing Articole din publicaţii internaţionale by Subject "ultrathin membranes"

Browsing Articole din publicaţii internaţionale by Subject "ultrathin membranes"

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  • Design and maskless fabrication of ultrathin suspended membranes of GaN 
    TIGINYANU, I. M.; POPA, V.; STEVENS-KALCEFF, M. A.; GERTHSEN, D.; BRENNER, P.; PAVLIDIS, D. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2012)
    We report the maskless fabrication of ultrathin suspended GaN membranes designed by focused ion beam treatment of the GaN epilayer surface with subsequent photoelectrochemical etching. This technological approach allows ...
  • Electrochemical nanostructuring 
    TIGINYANU, I. M. (Institutul de Fizică Aplicată al AŞM, 2012)
    The work represents a review of technological approaches for 2D and 3D nanostructuring of semiconductor compounds by using radiation treatment and electrochemistry. Novel spatial nanoarchitectures based on III-V and II-VI ...
  • Fabrication of photonic crystal circuits based on GaN ultrathin membranes by maskless lithography 
    VOLCIUC, Olesea; BRANISTE, Tudor; SERGENTU, Vladimir; URSAKI, Veaceslav; TIGINYANU, Ion M.; GUTOWSKI, Jürgen (Society of Photo-Optical Instrumentation Engineers, SPIE, 2015)
    We report on maskless fabrication of photonic crystal (PhC) circuits based on ultrathin (d~15 nm) nanoperforated GaN membranes exhibiting a triangular lattice arrangement of holes with diameters of 150 nm. Ultrathin GaN ...
  • GaN nanomembranes as memristors with self-rectification 
    DRAGOMAN, Mircea; CIOBANU, Vladimir; DRAGOMAN, Daniela; DINESCU, Adrian; BRANISTE, Tudor; TIGINYANU, Ion (Institute of Nanocience and Nanotechnology, INN, 2017)
    We have recently shown that GaN ultrathin membranes suspended on GaN nanowires having a thickness of 15 nm and planar dimensions of 12×184 microns are acting as memristive devices. The physical effect which explains this ...
  • Large-Sized Nanocrystalline Ultrathin β-Ga2O3 Membranes Fabricated by Surface Charge Lithography 
    CIOBANU, Vladimir; CECCONE, Giacomo; JIN, Irina; BRANISTE, Tudor; YE, Fei; FUMAGALLI, Francesco; COLPO, Pascal; DUTTA, Joydeep; LINNROS, Jan; TIGINYANU, Ion (MDPI (Basel, Switzerland), 2022)
    Large-sized 2D semiconductor materials have gained significant attention for their fascinating properties in various applications. In this work, we demonstrate the fabrication of nanoperforated ultrathin β-Ga2O3 membranes ...
  • Memristive GaN ultrathin suspended membrane array 
    DRAGOMAN, Mircea; TIGINYANU, Ion; DRAGOMAN, Daniela; BRANISTE, Tudor; CIOBANU, Vladimir (IOP Publishing, 2016)
    We show that ultrathin GaN membranes, with a thickness of 15 nm and planar dimensions of 12 × 184 μm2, act as memristive devices. The memristive behavior is due to the migration of the negatively-charged deep traps, which ...
  • Photonic Crystal Structures Based on GaN Ultrathin Membranes 
    VOLCIUC, Olesea; SERGENTU, Vladimir; TIGINYANU, Ion; SCHOWALTER, Marco; URSAKI, Veaceslav; ROSENAUER, Andreas; HOMMEL, Detlef; GUTOWSKI, Jürgen (American Scientific Publishers, 2014)
    We report on maskless fabrication of ultrathin (d ~ 15 nm) nanoperforated GaN membranes exhibiting a triangular lattice arrangement of holes with a diameter of 150 nm, and show that these membranes represent an intermediate ...

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