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Optical Properties of A-Plane InGaN/GaN Multiple Quantum Wells Grown on Nanorod Lateral Overgrowth Templates

Huei-Min Huang, Shih-Chun Ling, Wei-Wen Chan, Tien-Chang Lu, Hao-Chung Kuo, Shing-Chung Wang
2011 IEEE Journal of Quantum Electronics  
A-plane InGaN/GaN multiple-quantum wells (MQWs) were grown on a series of nanorod epitaxial lateral overgrowth (NRELOG) templates with varied nanorod depth.  ...  Optical properties of these samples were investigated by excitation power and temperature-dependent photoluminescence (PL).  ...  Therefore, in the paper, we deposit InGaN/GaN multiple quantum wells (MQWs) on the high crystal quality NRELOG a-plane GaN templates and investigated their optical properties as well as internal quantum  ... 
doi:10.1109/jqe.2011.2158632 fatcat:y4swvifwizg4vmwxiowftrgbzy

InGaN multiple quantum wells grown on ELO GaN templates and the optical properties characterization

Hailong Zhou, S.J. Chua, Keyan Zang, L.S. Wang, S. Tripathy, N. Yakovlev, Osipowicz Thomas
2007 Journal of Crystal Growth  
After wet etching of the mask, periodic multiple quantum wells (MQWs) InGaN/GaN structures were grown on the whole surface.  ...  The well thickness and In composition of the quantum wells (QWs) were analyzed by the cross-sectional and high resolution X-ray diffraction (HR-XRD) measurements.  ...  We would like to thank Institute of Materials Research and Engineer Staff, Ms. Chow Shue Yin and Ms. Yong Anna Marie for their help in TEM characterization.  ... 
doi:10.1016/j.jcrysgro.2006.10.067 fatcat:5f4xpqhdezgarnv4nwetbc3wqq

Fabrication and optical properties of nano-structured semipolar InGaN/GaN quantum wells on c-plane GaN template

Hongbo Yu, Taeil Jung, P. C. Ku
2008 Physica Status Solidi. C, Current topics in solid state physics  
Acknowledgements Part of this work is conducted in the Michigan Nanofabrication Facility which is part of the NSF NNIN.  ...  Optical properties of the MQWs were studied by temperature-dependent and excitation density varied photoluminescence.  ...  Optical properties of the NSSP GaN are investigated by room temperature (300 K; RT) PL and are compared to a 2 µm-thick planar c-plane GaN film.  ... 
doi:10.1002/pssc.200778541 fatcat:dmerijyqzvaojkbt7r3ldteh6e

Influence of template type and buffer strain on structural properties of GaN multilayer quantum wells grown by PAMBE, an x-ray study

V P Kladko, A V Kuchuk, N V Safryuk, V F Machulin, P M Lytvyn, V G Raicheva, A E Belyaev, Yu I Mazur, E A DeCuir Jr, M E Ware, M O Manasreh, G J Salamo
2010 Journal of Physics D: Applied Physics  
The influence of template type and residual strain of the buffer layer on the structural properties of GaN/AlN superlattices (SLs) was studied using high resolution x-ray diffraction.  ...  Using sapphire substrates, an effective thinning of the GaN quantum wells and the corresponding thickening of the AlN barriers were observed in SL structures grown on thin, strained AlN templates as compared  ...  Acknowledgments The authors acknowledge the financial support of the NSF (through Grant DMR-0520550), National Academy of Sciences of Ukraine (Grant No 4/08-H), Ministry of Education of Ukraine (Project  ... 
doi:10.1088/0022-3727/44/2/025403 fatcat:xs3wfznnn5bp3kurjfpokk52ku

A Post-Quantum Fuzzy Commitment Scheme for Biometric Template Protection: An Experimental Study

Alawi A. Al-Saggaf
2021 IEEE Access  
SECURITY PROPERTIES This section investigates the security properties of the ISO/IEC 24745 standard for biometric template protection.  ...  Theorem 2 shows that breaking the binding property of the post-quantum fuzzy commitment scheme implies solving the SVP problem.A.  ... 
doi:10.1109/access.2021.3100981 fatcat:vpc34nzaefcmbi5kectkdbmozm

Influence of Quantum well Thickness Fluctuation on Optical Properties of InGaN/GaN Multi Quantum well Structure Grown by PA-MBE

Hyeonseok Woo, Jongmin Kim, Sangeun Cho, Yongcheol Jo, Cheong Hyun Roh, Hyungsang Kim, Cheol-Koo Hahn, Hyunsik Im
2017 Applied Science and Convergence Technology  
An InGaN/GaN multiple quantum well (MQW) structure is grown on a GaN/sapphire template using a plasma-assisted molecular beam epitaxy (PA-MBE).  ...  Inhomogeneity of the quantum confinement results in a degradation of the quantum efficiency even though the InGaN layer has a uniform In composition. Figure 1.  ...  Influence of Quantum well Thickness Fluctuation on Optical Properties of InGaN/GaN Multi Quantum well... 54 Appl. Sci. Converg.  ... 
doi:10.5757/asct.2017.26.3.52 fatcat:lzq54fh6znbbfawwztfx53mxp4

Properties of nonpolar a-plane InGaN∕GaN multiple quantum wells grown on lateral epitaxially overgrown a-plane GaN

Arpan Chakraborty, Stacia Keller, Cedrik Meier, Benjamin A. Haskell, Salka Keller, Patrick Waltereit, Steven P. DenBaars, Shuji Nakamura, James S. Speck, Umesh K. Mishra
2005 Applied Physics Letters  
The properties of nonpolar a-plane InGaN/GaN multiple-quantum wells ͑MQWs͒, grown simultaneously on lateral epitaxially overgrown ͑LEO͒ a-plane GaN and planar a-plane GaN, were studied.  ...  emission from the nearly defect-free wings of the LEO a-plane GaN was more than ten times stronger than the emission from the defective windows.  ...  In comparison to c-plane InGaN/GaN multiple-quantum wells ͑MQWs͒, 8 very little is known about the structural and optical properties of nonpolar InGaN/GaN MQWs grown on a-plane GaN.  ... 
doi:10.1063/1.1851007 fatcat:pkdddoiiafcq7jfw22o6b6zobm

Synthesis of Reversible and Quantum Circuit using ROCBDD and Mixed-Polarity Toffoli Gate

Hieu Nguyen, Linh Tran
2021 IEEE Access  
Moreover, we also study an algorithm to match templates at share nodes -an important property of BDD.  ...  Inheriting the properties of complement edges BDD, a new template using mixed-polarity Toffoli gates is proposed to decrease the number of gates.  ... 
doi:10.1109/access.2021.3116756 fatcat:b2xywt67svcwragrr75ldm57tu

Biotemplated nanostructures: directed assembly of electronic and optical materials using nanoscale complementarity

Nan Ma, Edward H. Sargent, Shana O. Kelley
2008 Journal of Materials Chemistry  
In the last several years, tremendous advances have been made towards using the structures of biomolecules as scaffolds and templates for nanomaterials.  ...  The worlds of biology and materials engineering have traditionally been quite distinct.  ...  The utility of nucleic acid-templated quantum dot synthesis has been demonstrated in several studies where the sequences and structures of nucleic acids were used to control the size and properties of  ... 
doi:10.1039/b711764g fatcat:j7ztkwuornc4njinvjwyezur6a

Lithography of Self-assembled Semiconductor Quantum Dots on Templates Fabricated from Mixed Langmuir-Blodgett Films

Satoshi Watanabe, Naoya Tamura, Mutsuyoshi Matsumoto
2012 Journal of Oleo Science  
We used atomic force microscopy AFM , scanning electron microscopy SEM , and fl uorescence microscopy to investigate the morphology and optical properties of the semiconductor quantum-dot-immobilized templates  ...  LB fi lms Core-shell quantum dots have attracted a large amount of interest in electronics, photonics, and biological fields owing to their electronic and photonic properties based on the quantum size  ... 
doi:10.5650/jos.61.277 pmid:22531055 fatcat:lerfwie42bd5vifbz235msclue

Formation and optical characterization of single InAs quantum dots grown on GaAs nanoholes

P. Alonso-González, B. Alén, D. Fuster, Y. González, L. González, J. Martínez-Pastor
2007 Applied Physics Letters  
We present a study of the structural and optical properties of InAs quantum dots formed in a low density template of nanoholes fabricated by droplet epitaxy on GaAs ͑001͒.  ...  The growth conditions used here promote the formation of isolated quantum dots only inside the templated nanoholes.  ...  We present a study of the structural and optical properties of InAs quantum dots formed in a low density template of nanoholes fabricated by droplet epitaxy on GaAs ͑001͒.  ... 
doi:10.1063/1.2799736 fatcat:sieamln3knf3xg2tmoq255raiy

Templated Growth of Semiconductor Nanostructures through Block Copolymer Lithography

L Denault, R Klinger, ST Taylor, A Alizadeh, C Keimel, D Hays, K Krishnan, F Sharifi, K Conway, J Grande, A Stintz, S Krishna (+2 others)
2006 Microscopy and Microanalysis  
AFM and SEM images of templated grown quantum dots (where SiO 2 templates have been removed subsequent to growth) are shown in Figure 2 .  ...  High-resolution TEM is also used extensively to characterize the morphology and defect structure of templated grown quantum dots.  ...  HRTEM images of III/V quantum dots at varying growth time conditions. Twinned regions are clearly observed a) at the dot edges and b) in the upper right corner of the dot.  ... 
doi:10.1017/s1431927606066086 fatcat:dn2pvovhqzdzzgskrlasokf63y

Template-Assisted Electrochemical Synthesis of CdSe Quantum Dots—Polypyrrole Composite Nanorods

Won-Seok Kang, Taegon Oh, Gwang-Hyeon Nam, Hyo-Sop Kim, Ki-Suk Kim, Sun-Hyun Park, Jae-Ho Kim, Jae-Hyeok Lee
2020 Applied Sciences  
In this paper we demonstrate a simple procedure to synthesize a nanoparticle-embedded polymer nanorod hybrid structure via a template-based electrochemical method using anodic aluminum oxide membranes.  ...  However, the lack of facile methodology for heterojunction formation of the nanoparticles provides many challenges for scalability.  ...  properties may be significantly improved due to the maximized surface area and quantum effects.  ... 
doi:10.3390/app10175966 fatcat:7myero7j4jfx7hhulqyz4l7imq

Quantum Circuit Simplification and Level Compaction

D. Maslov, G.W. Dueck, D.M. Miller, C. Negrevergne
2008 IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  
We also show how templates can be used to compact the number of levels of a quantum circuit.  ...  In this paper, we consider a local optimization technique based on templates to simplify and reduce the depth of non-optimal quantum circuits.  ...  Since the template definition is only based on the properties of matrix multiplication, they can be applied in any quantum gate library and for any cost metric. VIII.  ... 
doi:10.1109/tcad.2007.911334 fatcat:6fqwv44qznh6xokzvl5qmhnxxm

Self-organized lattice of ordered quantum dot molecules

T. v. Lippen, R. Nötzel, G. J. Hamhuis, J. H. Wolter
2004 Applied Physics Letters  
The QD molecules exhibit excellent optical properties up to RT making them potential candidates as functional building blocks for quantum computing and quantum communication applications in solid state  ...  [DOI: 10.1063/1.1771460] Quantum functional semiconductor devices with applications in solid-state quantum computing and quantum communication require the lateral ordering of quantum dots (QDs) of high  ... 
doi:10.1063/1.1771460 fatcat:q52pci7u4vbwnd4zmzwm5e4yre
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