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Nanyang Technological University is a young, research-intensive university in Singapore. It is one of the largest public universities in Singapore.NTU was inaugurated in 1991, originally as an English-medium technical and teaching college occupying the grounds of the former Nanyang University, a Chinese-medium university which had been consolidated into the National University of Singapore in 1980. Over the years, NTU has grown to become a full-fledged research university, and currently provides a high-quality global education to close to 33,000 undergraduate and postgraduate students. The student body includes top scholars and international olympiad medallists from the region and beyond. Hailing from more than 70 countries, the university's 4000-strong teaching and research staff also bring dynamic international perspectives and years of solid industry experience.In recent years, various college and university rankings have placed NTU amongst the top universities in Asia and beyond. In the 2014 QS World University Rankings, NTU is ranked 39th globally , and is placed 1st in the world among young universities according to the 2014 QS Top 50 Under 50. NTU's College of Engineering is also ranked 9th in the world according to the latest 2014 QS World University Rankings by Faculty. In the 2014 Times Higher Education World University Rankings, NTU is ranked at 61st globally . NTU's business school, Nanyang Business School, was rated 64th in the world by the Economist Intelligence Unit in 2013. Wikipedia.

Pumera M.,Nanyang Technological University
ACS Nano | Year: 2014

While the electrochemistry of redox-active ions or molecules has been studied for decades, the electrochemistry of individual nanoparticles remains largely unexplored. In this issue of ACS Nano, Stuart et al. report the direct electrochemical detection of impacting carbon C60 nanoparticles in a non-aqueous solution. This study opens up the possibility of detecting and counting various redox-active inorganic, organic, and carbon-based nanoparticles, one by one, in colloids and suspensions by a simple and highly sensitive technique. The method developed by Stuart et al. enables the determination of the type, size, and concentration of the nanoparticles. One can foresee a wide scope of potential applications, ranging from the environmental monitoring of nanoparticles to the detection of self-propelled autonomous nano- and micromachines. © 2014 American Chemical Society.

Pumera M.,Nanyang Technological University
Materials Today | Year: 2011

Biosensing is paramount for improving the quality of human life. Biosensors and biosensing protocols are able to detect a wide range of compounds, sensitively and selectively, with applications in security, health care for point-of-care analyses of diseases, and environmental safety. Here, we describe biosensors and biosensing systems employing graphene. Graphene is a zero-gap semiconductor material, which is electroactive and transparent. Because of its interesting properties, graphene has found its way into a wide variety of biosensing schemes. It has been used as a transducer in bio-field-effect transistors, electrochemical biosensors, impedance biosensors, electrochemiluminescence, and fluorescence biosensors, as well as biomolecular labels. In our review, we describe the application of graphene for enzymatic biosensing, DNA sensing, and immunosensing. We compare different techniques and present our views on the future development of the field. © 2011 Elsevier Ltd.

Pumera M.,Nanyang Technological University
Energy and Environmental Science | Year: 2011

There is enormous interest in the use of graphene-based materials for energy storage. This article discusses the progress that has been accomplished in the development of chemical, electrochemical, and electrical energy storage systems using graphene. We summarize the theoretical and experimental work on graphene-based hydrogen storage systems, lithium batteries, and supercapacitors. Even though the research on the use of graphene for energy storage began very recently, the explosive growth of the research conducted in this area makes this minireview timely. © 2011 The Royal Society of Chemistry.

Pumera M.,Nanyang Technological University
Chemical Society Reviews | Year: 2010

Graphene-based nanomaterials are in the forefront of chemical research. This tutorial review provides an introduction to their electrochemistry, its fundamentals and applications. Selected examples of applications in energy storage and sensing are presented. The synthetic methods for preparing graphenes as well as their materials chemistry are thoroughly discussed, as they have a profound influence on the electronic and electrochemical behavior of graphene-related nanomaterials. Inherent electrochemistry and spectroelectrochemistry of graphene nanomaterials is discussed thoroughly. Important application in sensing and energy storage areas are highlighted. © 2010 The Royal Society of Chemistry.

Wang Y.,Nanyang Technological University
Nature communications | Year: 2010

A central theme in nanotechnology is to advance the fundamental understanding of nanoscale component assembly, thereby allowing rational structural design that may lead to materials with novel properties and functions. Nanoparticles (NPs) are often regarded as 'artificial atoms', but their 'reactions' are not readily controllable. Here, we demonstrate a complete nanoreaction system whereby colloidal NPs are rationally assembled and purified. Two types of functionalized gold NPs (A and B) are bonded to give specific products AB, AB(2), AB(3) and AB(4). The stoichiometry control is realized by fine-tuning the charge repulsion among the B-NPs. The products are protected by a polymer, which allows their isolation in high purity. The integration of hetero-assembly, stoichiometry control, protection scheme and separation method may provide a scalable way to fabricate sophisticated nanostructures.

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