نتایج جستجو برای: graphene based nanomaterials

تعداد نتایج: 2983188  

Journal: :Nanotechnology 2008
Alexander Quandt Cem Ozdoğan Jens Kunstmann Holger Fehske

We present a model system that might serve as a blueprint for the controlled layout of graphene based nanodevices. The systems consists of chains of B(7) clusters implanted in a graphene matrix, where the boron clusters are not directly connected. We show that the graphene matrix easily accepts these alternating B(7)-C(6) chains and that the implanted boron components may dramatically modify th...

2015
Chengdong Zhang Silong Chen Wei Chen

Article history: Received 14 May 2015 Received in revised form 5 July 2015 Accepted 8 July 2015 Available online 9 July 2015 Graphene-based nanomaterials have been widely studied as high-performance matrices for enzyme immobilization and in the development of biosensors. Surface O-functionalities of graphene induce changes in chemical reactivity and electronic conductivity of nanomaterials and ...

2014
Sixiang Shi Feng Chen Emily B. Ehlerding Weibo Cai

Graphene-based nanomaterials have attracted tremendous interest over the past decade due to their unique electronic, optical, mechanical, and chemical properties. However, the biomedical applications of these intriguing nanomaterials are still limited due to their suboptimal solubility/biocompatibility, potential toxicity, and difficulties in achieving active tumor targeting, just to name a few...

2014
Xiaolin Li Zhihua Zhou Dejiong Lu Xinwei Dong Minghan Xu Liangming Wei Yafei Zhang

We examined the toxicity of four carbon-based nanomaterials (unmodified) by using carbon quantum dots (CQDs), graphene quantum dots (GQDs), graphene oxide (GO), and single-walled carbon nanotubes (SWCNTs) to cultivate bean sprout. Results showed that the toxicity of these four carbon nanomaterials increases with the increasing of concentration and cultivating time. In addition, pH test was appl...

2017
Yong Cheol Shin Su-Jin Song Suck Won Hong Seung Jo Jeong Wojciech Chrzanowski Jae-Chang Lee Dong-Wook Han

Because of recent research advances in nanoscience and nanotechnology, there has been a growing interest in functional nanomaterials for biomedical applications, such as tissue engineering scaffolds, biosensors, bioimaging agents and drug delivery carriers. Among a great number of promising candidates, graphene and its derivatives-including graphene oxide and reduced graphene oxide-have particu...

Journal: :Nature nanotechnology 2015
Won Chul Lee Kwanpyo Kim Jungwon Park Jahyun Koo Hu Young Jeong Hoonkyung Lee David A Weitz Alex Zettl Shoji Takeuchi

Assembling inorganic nanomaterials on graphene is of interest in the development of nanodevices and nanocomposite materials, and the ability to align such inorganic nanomaterials on the graphene surface is expected to lead to improved functionalities, as has previously been demonstrated with organic nanomaterials epitaxially aligned on graphitic surfaces. However, because graphene is chemically...

2017
Dimitrios Tasis

Graphene-based nanomaterials functionalized by different doping strategies have attracted great attention for energy conversion themes, due to their large specific surface area, high conductivity, and appreciable electrocatalytic properties. This mini-review presents an overview of the recent progress in the synthesis of graphene-based nanomaterials as counter electrodes for dye-sensitized sola...

Journal: :Frontiers in bioscience 2011
Paolo Bertoncello

Analytical applications of nanomaterials used in electrochemiluminescence (ECL)-based detection methods are reviewed. Among nanomaterials, carbon-based nanomaterials (carbon nanotubes, graphene), metal nanoparticles, quantum dots, inorganic metal complexes and conducting polymers are considered. The most common mechanisms of ECL detections are also described in this review. Finally, challenges ...

2017
Yu Li Ziwei Li Cheng Chi Hangyong Shan Liheng Zheng Zheyu Fang

Plasmonics has developed for decades in the field of condensed matter physics and optics. Based on the classical Maxwell theory, collective excitations exhibit profound light-matter interaction properties beyond classical physics in lots of material systems. With the development of nanofabrication and characterization technology, ultra-thin two-dimensional (2D) nanomaterials attract tremendous ...

Journal: :Advanced Drug Delivery Reviews 2016

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