نتایج جستجو برای: gnr

تعداد نتایج: 321  

Journal: :RSC advances 2015
Huan Hu Shouvik Banerjee David Estrada Rashid Bashir William P King

Graphene nanoribbons (GNRs) have promising applications in future nanoelectronics, chemical sensing and electrical interconnects. Although there are quite a few GNR nanofabrication methods reported, a rapid and low-cost fabrication method that is capable of fabricating arbitrary shapes of GNRs with good-quality is still in demand for using GNRs for device applications. In this paper, we present...

Journal: :Physical chemistry chemical physics : PCCP 2015
Joanne D Du Wye-Khay Fong Stefan Salentinig Suzanne M Caliph Adrian Hawley Ben J Boyd

The manipulation of the structure of phospholipid-based mesophases to induce a slow to fast drug release profile has potential for use in therapeutic situations where continuous absorption of drug is not desirable and reduce the frequency of injection for short acting or rapidly cleared drugs in treatments for diseases such as macular degeneration. This study had two aims; firstly to confirm th...

2017
Xingchen Zhao Dawei Lu Qian S Liu Yiling Li Rui Feng Fang Hao Guangbo Qu Qunfang Zhou Guibin Jiang

Gold nanorods (GNRs) are a unique class of metal nanostructures that have attractive potentials in biomedical applications, and the concern on their biological safety is concomitantly increasing. Hemocompatibility is extremely important as their contact with blood circulation is unavoidable during in vivo delivery. Herein, two kinds of GNRs coated with hexadecyltrimethylammonium bromide (C-GNRs...

Journal: :Computational Materials Science 2021

The pull and release molecular dynamics simulations of graphene nanoribbons (GNR) lead to their length dependent several folded conformations in the ground states at finite temperatures. folding occurs when potential energy stretched GNR is sufficient overcome barriers between flat its conformations. We explore GNRs during as develops intrinsic ripples soon thermal fluctuations are introduced r...

Journal: :ACS nano 2013
Xiaowei Zhang Oleg V Yazyev Juanjuan Feng Liming Xie Chenggang Tao Yen-Chia Chen Liying Jiao Zahra Pedramrazi Alex Zettl Steven G Louie Hongjie Dai Michael F Crommie

The edges of graphene nanoribbons (GNRs) have attracted much interest due to their potentially strong influence on GNR electronic and magnetic properties. Here we report the ability to engineer the microscopic edge termination of high-quality GNRs via hydrogen plasma etching. Using a combination of high-resolution scanning tunneling microscopy and first-principles calculations, we have determin...

2015
Shigeki Kawai Shohei Saito Shinichiro Osumi Shigehiro Yamaguchi Adam S. Foster Peter Spijker Ernst Meyer

Boron is a unique element in terms of electron deficiency and Lewis acidity. Incorporation of boron atoms into an aromatic carbon framework offers a wide variety of functionality. However, the intrinsic instability of organoboron compounds against moisture and oxygen has delayed the development. Here, we present boron-doped graphene nanoribbons (B-GNRs) of widths of N=7, 14 and 21 by on-surface...

Journal: :Nanotechnology 2013
Wonjin Jo Min Jun Kim

We evaluate a method for biofilm disinfection by raising biofilm temperature using the photothermal effect of a gold nanorod cluster. Gold nanorods (GNRs) are capable of generating enough heat to lyse bacteria by heating biofilm via laser irradiation. To test this, GNRs are synthesized using wet chemistry and a single GNR cluster is fabricated using photo-lithography technique. The GNR cluster ...

Journal: :Nanoscale 2015
Pablo Solís-Fernández Mark A Bissett Masaharu Tsuji Hiroki Ago

We demonstrate the controlled tuning of the electronic band structure of large-arrays of graphene nanoribbons (GNRs) by chemical functionalization. The GNR arrays are synthesized by substrate-controlled metal-assisted etching of graphene in H2 at high temperature, and functionalized with different molecules. From Raman spectroscopy and carrier transport measurements, we found that 4-nitrobenzen...

Journal: :Nature materials 2011
A Chuvilin E Bichoutskaia M C Gimenez-Lopez T W Chamberlain G A Rance N Kuganathan J Biskupek U Kaiser A N Khlobystov

The ability to tune the properties of graphene nanoribbons (GNRs) through modification of the nanoribbon's width and edge structure widens the potential applications of graphene in electronic devices. Although assembly of GNRs has been recently possible, current methods suffer from limited control of their atomic structure, or require the careful organization of precursors on atomically flat su...

2013
D. H. Choi Q. Wang Y. Azuma Y. Majima J. H. Warner Y. Miyata H. Shinohara R. Kitaura

Graphene nanoribbons (GNR) are one of the most promising candidates for the fabrication of graphene-based nanoelectronic devices such as high mobility field effect transistors (FET). Here, we report a high-yield fabrication of a high quality another type of GNR analogue, fully flattened carbon nanotubes (flattened CNTs), using solution-phase extraction of inner tubes from large-diameter multi-w...

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