Deposition, characterization and biological application of epitaxial Li:ZnO/Al:ZnO double-layers

被引：21

作者：

Vlad, A. ^{[1
]}

Yakunin, S. ^{[1
]}

Kolmhofer, E. ^{[2
]}

Kolotovska, V. ^{[3
]}

Muresan, L. ^{[4
]}

Sonnleitner, A. ^{[3
]}

Baeuerle, D. ^{[1
]}

Pedarnig, J. D. ^{[1
]}

机构：

[1] Johannes Kepler Univ Linz, Inst Appl Phys, A-4040 Linz, Austria

[2] DICE GmbH & Co KG, A-4040 Linz, Austria

[3] Upper Austrian Res GmbH, Ctr Biomed Nanotechnol, A-4020 Linz, Austria

[4] Johannes Kepler Univ Linz, Dept Knowledge Based Math Syst, A-4040 Linz, Austria

来源：

THIN SOLID FILMS | 2009年 / 518卷 / 04期

基金：

奥地利科学基金会;

关键词：

ZnO; Epitaxial layer; Pulsed laser deposition; Impedance spectroscopy; Acoustic shear modes; Aquaporin; Water transport; Fluorescence microscopy; ZNO THIN-FILMS; PULSED-LASER DEPOSITION; ZINC-OXIDE FILMS; OPTICAL-PROPERTIES; WAVE TRANSDUCER; GROWTH; MICROSTRUCTURE; RESONATORS; CONSTANTS; SAPPHIRE;

D O I：

10.1016/j.tsf.2009.03.234

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Double-layers of lithium doped ZnO (LZO) and aluminum doped ZnO (AZO) are grown on r-cut sapphire (r-Al2O3) crystal substrates by pulsed-laser deposition. The epitaxial double-layers are a-axis lattice oriented to the substrate. The LZO/AZO/r-Al2O3 samples have high optical transmission in the visible range and a bandgap energy of E-g = 3.28 eV according to the absorption edge of ZnO. The AZO bottom layers are electrically conductive (resistivity at room temperature rho similar to 10(-3) Omega cm) and LZO top layers are highly resistive (rho >= 10(5) Omega cm). Acoustic shear mode resonances in r-Al2O3 are excited by employing electric fields to the piezoelectric LZO layer(frequency interval 1.5-3 GHz). For biological applications, Madin-Darby canine kidney cells are cultivated on Platinum coated LZO/AZO/r-Al2O3 samples. Osmotic pressure applied to the cells increases or reduces the cell volume depending on the osmolarity of the medium. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1350 / 1354

页数：5

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