ZnO-NWs/metallic glass nanotube hybrid arrays: Fabrication and material characterization

Weldegrum, Getabalew Shifera; Singh, Pragya; Huang, Bohr–Ran; Chiang, Tihao; Tseng, Kuan-Wei; Yu, Chun-Ju; Chen, Ji; Chu, Jinn P.

doi:10.1016/j.surfcoat.2020.126785

Cited by 15 publications

(2 citation statements)

References 37 publications

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“…Both NWs and thin films are affected by the underlying mechanics of the piezotronic and piezophototronic phenomena. NWS, on the other hand, have more significant benefits as explained below [40,[51][52][53]:…”

Section: Piezoelectric Semiconductor Nwsmentioning

confidence: 99%

Piezoelectric Materials based Phototronics

Singh

2022

Materials Research Foundations

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In 2010, the fundamentals of piezo-phototronics were introduced. By applying stress, a piezo potential is formed in a non-central symmetrical crystal due to ion polarisation. Due to the co-existence of semiconductor and piezoelectricity characteristics, piezo potential induced in the crystal is of significant impact on charge transfer at the junction/interface. The phototronic product uses the piezo capability to manage carrier formation, separation, transportation, and recombination to improve the performance of optoelectronic devices such as photon detectors, solar cells and LED. Today, most of the unique applications in this field can be found in sensing, human-computer interfacing, actuating nanorobotics by effectively integrating piezo-phototronic devices and piezotronic with silicon-based CMOS technology. This chapter gives an insight into the fundamentals of piezo-phototronics.

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Section: Piezoelectric Semiconductor Nwsmentioning

confidence: 99%

Piezoelectric Materials based Phototronics

Singh

2022

Materials Research Foundations

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“…In a previous study, we succeeded in fabricating highlyordered metallic nanotube arrays (MeNTAs) on Si wafers [24][25][26][27][28] for use in SERS [16]. Our approach to the fabrication of nanoarrays using lithographic methods in conjunction with sputter deposition at room temperature is simple and costeffective, making it possible to mass-produce defect-free nanotube arrays with a precise geometry.…”

Section: Introductionmentioning

confidence: 99%

Cost-effective large-area Ag nanotube arrays for SERS detections: effects of nanotube geometry

Yang¹,

Chu²

2021

Nanotechnology

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This study demonstrated highly-ordered metallic nanotube arrays (MeNTAs) with a precisely controlled geometric shape to promote surface-enhanced Raman scattering (SERS). Using both simulation and experimental methods, we designed and fabricated MeNTAs with nanotube geometries that possess a large surface area to absorb probe molecules as well as geometric features capable of inducing hot spots for SERS enhancement. The proposed top-down wafer-scale lithographic and sputter-deposition process is a simple and cost-effective approach to the fabrication of 1 mm×1 mm MeNTA at room temperature. Simulation results of nanotubes with various materials (Au, Ag, and Cu), diameters (100-1500 nm), geometric shapes (circle, equilateral triangle and square) and triangle corner curvatures (ranging from 0 to 300 nm) identified Ag triangles with sharp tips as the geometry best suited to SERS enhancement. The SERS spectra of crystal violet molecules generated from the Ag MeNTAs verified the patterns observed in computational simulations, wherein the effects of MeNTA on SERS decreased with an increase in the size of the nanotubes. Enhancement factor of 1.06×10 9 was obtained from our triangular Ag MeNTA, confirming its efficacy as an ultrahigh sensitivity SERS-active substrate.

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Development of p-type zinc oxide nanorods on zirconium-based metallic glass nanotube arrays by facile hydrothermal method for gas sensing applications

Shrisha

Motora

et al. 2023

Chemical Engineering Journal

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ZnO-NWs/metallic glass nanotube hybrid arrays: Fabrication and material characterization

Cited by 15 publications

References 37 publications

Piezoelectric Materials based Phototronics

Piezoelectric Materials based Phototronics

Cost-effective large-area Ag nanotube arrays for SERS detections: effects of nanotube geometry

Development of p-type zinc oxide nanorods on zirconium-based metallic glass nanotube arrays by facile hydrothermal method for gas sensing applications

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