Optical, structural and morphological studies of (ZnO) nano-rod thin films for biosensor applications using sol gel technique

Wahab, H. A.; Salama, Ahmed; El-Saeid, A.A.; Nur, Omer; Willander, Magnus; Battisha, I. K.

doi:10.1016/j.rinp.2013.01.005

Cited by 96 publications

(40 citation statements)

References 18 publications

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“…Mostly nanorods (NRs) [36,38,40,43,45,47,48,53,56,74,82,86] and nanowires (NWs) [29,33,42,46,49,75,77,94] were used as a biosensor platform. Nanoparticles (NPs) [35,37,50,83,84,97,98], quantum dots [34,44], other low-dimentional structures [30,32,39,52,70,71,76,79,80,81,85,89,93,95,99] and thin films [31,51,72,73] were also applied. [57], b) SEM images of ZnO nanowires grown on sapphire (0001) substrate 2 …”

Section: Application Of Zno Nanostructures In Biosensorsmentioning

confidence: 99%

“…Considering the interaction of biomolecules with nanostructures "on the solid surface", the crucial role belongs to the adsorption process [6,8,57,58,[70][71][72][73][74][75][76][77]. The latter depends on the number of factors such as surface properties of the film (roughness, porosity etc), its thickness, the amount and types of surface defects and general physico-chemical compatibility of biomolecules and ZnO thin film.…”

Section: Crucial Points For Biosensing 31 the Role Of Biomolecules mentioning

confidence: 99%

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Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Tereshchenko

Bechelany

Viter

et al. 2016

Sensors and Actuators B: Chemical

282

206

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Section: Application Of Zno Nanostructures In Biosensorsmentioning

confidence: 99%

Section: Crucial Points For Biosensing 31 the Role Of Biomolecules mentioning

confidence: 99%

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Tereshchenko

Bechelany

Viter

et al. 2016

Sensors and Actuators B: Chemical

282

206

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“…[1,2]. After achieving a nanoscaled shape, a large number of atoms exist on the metal surface, which makes the reactivity of the surface significantly enhanced with changing properties.…”

Section: Introductionmentioning

confidence: 99%

“…Crystalline ZnO, belonging to II-VI semiconductor group, is a semiconductor, mostly of wurtzite hexagonal structure with a direct wide band gap of about 3.37 eV, exhibiting a large * E-mail: nasrul_apece@yahoo.com exciton binding energy of 60 meV at room temperature [1,4,6]. It is a low cost, nontoxic material that exhibits good thermal conductivity and excellent thermal and mechanical stability [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Preparation and spectroscopic analysis of zinc oxide nanorod thin films of different thicknesses

Mia

Rana

Pervez

et al. 2017

Materials Science-Poland

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Zinc oxide thin films with different thicknesses were prepared on microscopic glass slides by sol-gel spin coating method, then hydrothermal process was applied to produce zinc oxide nanorod arrays. The nanorod thin films were characterized by various spectroscopic methods of analysis. From the images of field emission scanning electron microscope (FESEM), it was observed that for the film thickness up to 200 nm the formed nanorods with wurtzite hexagonal structure were uniformly distributed over the entire surface substrate. From X-ray diffraction analysis it was revealed that the thin films had good polycrystalline nature with highly preferred c-axis orientation along (0 0 2) plane. The optical characterization done by UV-Vis spectrometer showed that all the films had high transparency of 83 % to 96 % in the visible region and sharp cut off at ultraviolet region of electromagnetic spectrum. The band gap of the films decreased as their thickness increased. Energy dispersive X-ray spectroscopy (EDS) showed the presence of zinc and oxygen elements in the films and Fourier transform infrared spectroscopy (FT-IR) revealed the chemical composition of ZnO in the film.

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“…Due to its unique and fascinating structural, thermal, optical, electronic, and magnetic properties, different particle sizes of ZnO have been widely fabricated for transistors, light-emitting devices, solar cells, piezoelectric devices, photocatalysts, photovoltaic, gas sensors, and field-emission devices as well as chemical and biological sensors [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A Simple Up-Scalable Thermal Treatment Method for Synthesis of ZnO Nanoparticles

Lee

Saion

Al‐Hada

et al. 2015

Metals

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Abstract:A simple thermal treatment method, utilizing only zinc nitrate, polyvinyl pyrrolidone (PVP), and deionized water, was used to synthesize ZnO nanoparticles, and their characteristics were investigated by various techniques. The TGA measurement demonstrated that the bulk of the capping agent PVP can be removed at temperatures higher than 500 °C and is consistent with the absence of the majority of PVP absorption peaks in the FT-IR spectra. The formation of almost pure ZnO nanoparticles was established by the presence of single absorption peak in the FT-IR spectra due to being only Zn-O bonds at calcination temperatures of 500 °C and above. The TEM images revealed that the nanoparticles have a spherical shape and the particle size increased from 60.1-83.1 nm with an increase in calcination temperatures from 500-600 °C. The XRD diffraction patterns indicated that the particles are of a wurzite lattice structure. The optical properties were determined by UV-Vis spectrophotometer, and it was found that the band gap of ZnO nanoparticles decreased from 3.249-3.239 eV with an increase in calcination temperature from 500-600 °C.

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Optical, structural and morphological studies of (ZnO) nano-rod thin films for biosensor applications using sol gel technique

Cited by 96 publications

References 18 publications

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Optical biosensors based on ZnO nanostructures: advantages and perspectives. A review

Preparation and spectroscopic analysis of zinc oxide nanorod thin films of different thicknesses

A Simple Up-Scalable Thermal Treatment Method for Synthesis of ZnO Nanoparticles

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