An interleukin-6 ZnO/SiO2/Si surface acoustic wave biosensor

Krishnamoorthy, S.; Iliadis, A.A.; Bei, Thaleia; Chrousos, George P.

doi:10.1016/j.bios.2008.04.011

Cited by 86 publications

(41 citation statements)

References 21 publications

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“…There are also other substrates for fabricating ZnO based thin film high frequency SAW devices, such as diamond, diamond-like carbon films, SiC [74][75][76][77]. Other substrates suitable for the deposition of TM-doped ZnO films are Si [78,79], AlN/Si [80,81], SiO 2 /Si [82][83][84], and LiNbO 3 [85].…”

Section: Film Growth Of Tm-doped Znomentioning

confidence: 99%

Giant piezoresponse and promising application of environmental friendly small-ion-doped ZnO

Pan

Luo

Yang

et al. 2011

Sci. China Technol. Sci.

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In recent years, with the growing concerns on environmental protection and human health, new materials, such as lead-free piezoelectric materials, have received increasing attention. So far, three types of lead-free piezoelectric systems have been widely researched, i.e., perovskites, bismuth layer-structured ferroelectrics, and tungsten-bronze type ferroelectrics. This article presents a new type of environmental friendly piezoelectric material with simple structure, the transition-metal(TM)-doped ZnO. Through substituting Zn 2+ site with small size ion, we obtained a series of TM-doped ZnO with giant piezoresponse, such as Zn 0.975 V 0.025 O of 170 pC/N, Zn 0.94 Cr 0.06 O of 120 pC/N, Zn 0.913 Mn 0.087 O of 86 pC/N and Zn 0.988 Fe 0.012 O of 127 pC/N. The tremendous piezoresponses are ascribed to the introduction of switchable spontaneous polarization and high permittivity in TM-doped ZnO.The microscopic origin of giant piezoresponse is also discussed. Substitution of TM ion with small ionic size for Zn 2+ results in the easier rotation of noncollinear TM-O1 bonds along the c axis under the applied field, which produces large piezoelectric displacement and corresponding piezoresponse enhancement. Furthermore, it proposes a general rule to guide the design of new wurtzite semiconductors with enhanced piezoresponses. That is, TM-dopant with ionic size smaller than Zn 2+ substitutes for Zn 2+ site will increase the piezoresponse of ZnO significantly. Finally, we discuss the improved performances of some TM-doped ZnO based piezoelectric devices.

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Section: Film Growth Of Tm-doped Znomentioning

confidence: 99%

Giant piezoresponse and promising application of environmental friendly small-ion-doped ZnO

Pan

Luo

Yang

et al. 2011

Sci. China Technol. Sci.

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show abstract

“…SH-SAW devices on LiNbO 3 and LiTaO 3 suffer from the attenuation of acoustic wave and poor temperature stability. [13]. In addition, the commonly used piezoelectric crystals (quartz, LiNbO 3 and LiTaO 3 ) are brittle, expensive and inconvenient to integrate microelectronics and multiple sensing or microfluidics techniques into a lab-on-chip, which is not suitable for low-cost, disposable point of care application [1].…”

Section: Introductionmentioning

confidence: 99%

Shear-horizontal surface acoustic wave characteristics of a (110) ZnO/SiO2/Si multilayer structure

Luo

Quan

et al. 2017

Journal of Alloys and Compounds

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“…Before the immobilization of protein on ZnO, a hydroxylation step was required. The ZnO surface has a high density of unsaturated bonds, which could be hydroxylized readily upon the contact with ultra pure water [28,29]. In the next step, APTS acts as a bridge which is bound to gluteraldehyde.…”

Section: Preparation Of Spr Biosensor Based On Zno-au Nanocompositesmentioning

confidence: 99%

Surface plasmon resonance biosensor based on water-soluble ZnO–Au nanocomposites

Wang

Zhang

et al. 2009

Analytica Chimica Acta

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An interleukin-6 ZnO/SiO2/Si surface acoustic wave biosensor

Cited by 86 publications

References 21 publications

Giant piezoresponse and promising application of environmental friendly small-ion-doped ZnO

Giant piezoresponse and promising application of environmental friendly small-ion-doped ZnO

Shear-horizontal surface acoustic wave characteristics of a (110) ZnO/SiO2/Si multilayer structure

Surface plasmon resonance biosensor based on water-soluble ZnO–Au nanocomposites

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