Journal ArticleDOI
Controlled polytypic and twin-plane superlattices in iii-v nanowires.
Philippe Caroff,Kimberley A. Dick,Jonas Johansson,Maria E. Messing,Knut Deppert,Lars Samuelson +5 more
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TLDR
By selectively tuning the crystal structure, this work fabricates highly reproducible polytypic and twin-plane superlattices within single nanowires, which could lead to bandgap engineering and novel electronic behaviour.Abstract:
Semiconductor nanowires show promise for use in nanoelectronics, fundamental electron transport studies, quantum optics and biological sensing. Such applications require a high degree of nanowire growth control, right down to the atomic level. However, many binary semiconductor nanowires exhibit a high density of randomly distributed twin defects and stacking faults, which results in an uncontrolled, or polytypic, crystal structure. Here, we demonstrate full control of the crystal structure of InAs nanowires by varying nanowire diameter and growth temperature. By selectively tuning the crystal structure, we fabricate highly reproducible polytypic and twin-plane superlattices within single nanowires. In addition to reducing defect densities, this level of control could lead to bandgap engineering and novel electronic behaviour.read more
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Zero-bias peaks and splitting in an Al–InAs nanowire topological superconductor as a signature of Majorana fermions
TL;DR: In this paper, the existence of Majorana fermions in the one-dimensional topological superconductor induced by placing an aluminium super-conductor close to an indium-arsenide nanowire was shown.
Journal ArticleDOI
Atomic structure of sensitive battery materials and interfaces revealed by cryo–electron microscopy
Yuzhang Li,Yanbin Li,Allen Pei,Kai Yan,Yongming Sun,Chun-Lan Wu,Lydia-Marie Joubert,Richard Chin,Ai Leen Koh,Yi Yu,John Perrino,Benjamin Butz,Benjamin Butz,Steven Chu,Yi Cui,Yi Cui +15 more
TL;DR: Cryo–electron microscopy can preserve reactive metals and thus reveal the atomic structure of a lithium metal dendrite and atomically resolve individual lithium metal atoms and their interface with the solid electrolyte interphase (SEI).
Journal Article
Zero-bias peaks and splitting in an Al--InAs nanowire topological superconductor as signature of Majorana fermions
Journal ArticleDOI
25th Anniversary Article: Semiconductor Nanowires – Synthesis, Characterization, and Applications
Neil P. Dasgupta,Jianwei Sun,Jianwei Sun,Chong Liu,Chong Liu,Sarah Brittman,Sarah Brittman,Sean C. Andrews,Sean C. Andrews,Jongwoo Lim,Jongwoo Lim,Hanwei Gao,Hanwei Gao,Ruoxue Yan,Ruoxue Yan,Peidong Yang +15 more
TL;DR: A detailed explanation of the unique properties associated with the one-dimensional nanowire geometry will be presented, and the benefits of these properties for the various applications will be highlighted.
Journal ArticleDOI
Synthesis of hexagonal close-packed gold nanostructures
Xiao Huang,Shaozhou Li,Yizhong Huang,Shixin Wu,Xiaozhu Zhou,Shuzhou Li,Chee Lip Gan,Freddy Yin Chiang Boey,Chad A. Mirkin,Hua Zhang +9 more
TL;DR: This report reports the first in situ synthesis of dispersible hcp Au square sheets on graphene oxide sheets, which exhibit an edge length of 200-500 nm and a thickness of ~ 2.4 nm (~ 16 Au atomic layers).
References
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Journal ArticleDOI
Single-nanowire electrically driven lasers
TL;DR: In this paper, the authors investigate the feasibility of achieving electrically driven lasing from individual nanowires and show that these structures can function as Fabry-Perot optical cavities with mode spacing inversely related to the nanowire length.
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Why does wurtzite form in nanowires of III-V zinc blende semiconductors?
TL;DR: A nucleation-based model is developed to explain the formation of the wurtzite phase during the catalyzed growth of freestanding nanowires of zinc blende semiconductors and shows that in vapor-liquid-solid nanowire growth, nucleation generally occurs preferentially at the triple phase line.
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Label-free detection of small-molecule–protein interactions by using nanowire nanosensors
TL;DR: It is demonstrated that the silicon nanowire devices can readily and rapidly distinguish the affinities of distinct small-molecule inhibitors and, thus, could serve as a technology platform for drug discovery.
Journal ArticleDOI
Structural properties of 〈111〉B -oriented III–V nanowires
Jonas Johansson,Lisa Karlsson,C. Patrik T. Svensson,Thomas Mårtensson,Brent A. Wacaser,Knut Deppert,Lars Samuelson,Werner Seifert +7 more
TL;DR: GaP nanowires grown by metal-organic vapour-phase epitaxy are examined and it is shown that the nanowire segments between the twin planes are of octahedral shape and are terminated by {111} facets, resulting in a microfaceting of thenanowires.
Journal ArticleDOI
Single quantum dot nanowire LEDs.
Ethan D. Minot,Freek Kelkensberg,Maarten P. van Kouwen,Jorden A. van Dam,Leo P. Kouwenhoven,Valery Zwiller,Magnus T. Borgström,Olaf Wunnicke,Marcel A. Verheijen,Erik P. A. M. Bakkers +9 more
TL;DR: In this article, reproducible fabrication of InP−InAsP nanowire light-emitting diodes in which electron−hole recombination is restricted to a quantum-dot-sized InAsP section is reported.