Room-Temperature Polariton Lasing from GaN Nanowire Array Clad by Dielectric Microcavity

Nano Letters ◽  
2013 ◽  
Vol 13 (6) ◽  
pp. 2376-2380 ◽  
Author(s):  
Junseok Heo ◽  
Shafat Jahangir ◽  
Bo Xiao ◽  
Pallab Bhattacharya
Keyword(s):  
Room Temperature ◽  
Nanowire Array ◽  
Gan Nanowire

Room Temperature Polariton Lasing from GaN Nanowire Array in a Dielectric Microcavity

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
Bo Xiao ◽  
Junseok Heo ◽  
Shafat Jahangir ◽  
Pallab Bhattacharya
Keyword(s):  
Room Temperature ◽  
Nanowire Array ◽  
Gan Nanowire

Synthesis of Self-Supporting ZnO Nanowire Array Film and its Optical Property and Room Temperature Ferromagnetism

2021 ◽  
Vol 1036 ◽  
pp. 45-52
Author(s):  
Jiao Yang ◽  
Xin Yu Wang ◽  
Peng Kai Li ◽  
Ji Fa Huang ◽  
Peng Hao Deng
Keyword(s):  
Exposure Time ◽  
Room Temperature ◽  
Surface Defects ◽  
Room Temperature Ferromagnetism ◽  
Nanowire Array ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Vertical Orientation ◽  
Vibration Sample Magnetometer ◽  
The Relationship

X-ray diffractometer, field emission scanning electron microscope (SEM, Hitachi S-4800), laser confocal micro-region Raman spectrometer and vibration sample magnetometer were used to systematically study the effects of polyethyleneimine concentrations and exposure time on the morphology and size of ZnO nanowire arrays. The photoelectric property and the relationship between the morphology of nanowire arrays and ferromagnetism at room temperature were also analyzed. Under 15 min exposure time, when the polyethyleneimine concentration is 2.25 g / L, the obtained ZnO nanowire array film exhibits the smallest size, the optimal density and vertical orientation. According to the study of luminescence and room temperature magnetism, it is shown that the optical and ferromagnetic property are related to the variation tendency of oxygen defects and surface defects of the ZnO nanowires.

Quasi-horizontal GaN nanowire array network grown by sublimation sandwich technique

2008 ◽  
Vol 254 (20) ◽  
pp. 6637-6641 ◽  
Author(s):  
J.K. Jian ◽  
Cong Wang ◽  
M. Lei ◽  
Z.H. Zhang ◽  
T.M. Wang ◽  
...  
Keyword(s):  
Nanowire Array ◽  
Sandwich Technique ◽  
Gan Nanowire

Near-Infrared Reflection Spectra of Copper Nanowire Array Structures

2015 ◽  
Vol 1118 ◽  
pp. 125-128
Author(s):  
Wen Li Dou ◽  
Wen Xu ◽  
Shao Hui Xu ◽  
Guang Tao Fei ◽  
Yi Ming Xiao
Keyword(s):  
Surface Plasmon ◽  
Room Temperature ◽  
Near Infrared ◽  
Nanowire Array ◽  
Localized Surface Plasmon ◽  
Reflection Spectra ◽  
Anodic Alumina Oxide ◽  
Alumina Oxide ◽  
Frequency Regime ◽  
Array Structures

We present a detailed study on near-infrared (NIR) reflection spectra of Cu nanowire arrays (NWAs) which are embedded in porous anodic alumina oxide templates and with pore diameters from 35 nm to 80 nm. We find that the NIR reflection of these samples is out of the frequency regime for surface-plasmon resonance induced by intra-and inter-band excitations. However, the intensity of the NIR reflection of Cu NWAs depends strongly on sample parameters and temperature. The measurements are carried out at temperatures setting to be 4 K, 77 K, 200 K, and at room temperature. The optical response of the Cu NWAs in NIR bandwidth is attributed to localized surface-plasmon oscillations and the NIR reflectance increases with temperature up to room-temperature. The physical mechanisms behind these interesting findings are discussed.

scholarly journals Structural and Optical Properties of Self-Catalyzed Axially Heterostructured GaPN/GaP Nanowires Embedded into a Flexible Silicone Membrane

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2110
Author(s):  
Olga Yu. Koval ◽  
Vladimir V. Fedorov ◽  
Alexey D. Bolshakov ◽  
Sergey V. Fedina ◽  
Fedor M. Kochetkov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Molecular Beam ◽  
Nanowire Array ◽  
Growth Mechanisms ◽  
Structural And Optical Properties ◽  
Rubber Membrane ◽  
Transmission Electron ◽  
The Difference ◽  
Photoluminescence Studies

Controlled growth of heterostructured nanowires and mechanisms of their formation have been actively studied during the last decades due to perspectives of their implementation. Here, we report on the self-catalyzed growth of axially heterostructured GaPN/GaP nanowires on Si(111) by plasma-assisted molecular beam epitaxy. Nanowire composition and structural properties were examined by means of Raman microspectroscopy and transmission electron microscopy. To study the optical properties of the synthesized nanoheterostructures, the nanowire array was embedded into the silicone rubber membrane and further released from the growth substrate. The reported approach allows us to study the nanowire optical properties avoiding the response from the parasitically grown island layer. Photoluminescence and Raman studies reveal different nitrogen content in nanowires and parasitic island layer. The effect is discussed in terms of the difference in vapor solid and vapor liquid solid growth mechanisms. Photoluminescence studies at low temperature (5K) demonstrate the transition to the quasi-direct gap in the nanowires typical for diluted nitrides with low N-content. The bright room temperature photoluminescent response demonstrates the potential application of nanowire/polymer matrix in flexible optoelectronic devices.

Room temperature hydrogen sensing performances of multiple networked GaN nanowire sensors codecorated with Au and Pt nanoparticles

2015 ◽  
Vol 22 (5) ◽  
pp. 1614-1618 ◽  
Author(s):  
Sunghoon Park ◽  
Soohyun Kim ◽  
Suyoung Park ◽  
Sangmin Lee ◽  
Chongmu Lee
Keyword(s):  
Room Temperature ◽  
Pt Nanoparticles ◽  
Hydrogen Sensing ◽  
Gan Nanowire ◽  
Nanowire Sensors

Magnetoresistance of Nanoscale Domain Walls Formed in Arrays of Parallel Nanowires

SPIN ◽  
2019 ◽  
Vol 09 (01) ◽  
pp. 1950004
Author(s):  
Jingchun Wang ◽  
Floriano Cuccureddu ◽  
Rafael Ramos ◽  
Cormac Ó. Coileáin ◽  
Igor V. Shvets ◽  
...  
Keyword(s):  
Thin Films ◽  
Domain Wall ◽  
Exchange Interaction ◽  
Exchange Bias ◽  
Room Temperature ◽  
Domain Walls ◽  
Nanowire Array ◽  
Bias Field ◽  
Nanowire Arrays ◽  
Exchange Bias Field

We present the possibility of enhancing magnetoresistance (MR) by controlling nanoscale domain wall (DW) width in a planar nanowire array. Results based on micromagnetic calculations show that DW width decreases with increasing exchange bias field and decreases with reducing exchange interaction between neighboring nanowires. Fe/Fe3O4 nanowire arrays were grown on [Formula: see text]-plane sapphire to demonstrate the feasibility of this concept, and an enhanced MR ratio of 3.7% was observed at room temperature. compared with flat and stepped Fe3O4 thin films.

A highly sensitive label-free electrochemical immunosensor based on an aligned GaN nanowires array/polydopamine heterointerface modified with Au nanoparticles

2019 ◽  
Vol 7 (9) ◽  
pp. 1442-1449 ◽  
Author(s):  
Qingyun Liu ◽  
Taotao Yang ◽  
Yongqin Ye ◽  
Ping Chen ◽  
Xiaoning Ren ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Nanowire Array ◽  
Electrochemical Immunosensor ◽  
Label Free ◽  
Array Configuration ◽  
Gan Nanowires ◽  
Nanowire Surface ◽  
Highly Sensitive ◽  
Gan Nanowire ◽  
Nanowires Array

Taking advantage of a nanowire array configuration and a semiconductor/polymer heterointerface, a highly sensitive label-free electrochemical immunosensor was developed through integration of polydopamine on an aligned GaN nanowire surface.

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