Non-aqueous energy storage devices using graphene nanosheets synthesized by green route
Dattakumar Mhamane, Anil Suryawanshi, Abhik Banerjee, Vanchiappan Aravindan, Satishchandra Ogale, and Madhavi Srinivasan
In this paper we report the use of triethylene glycol reduced graphene oxide (TRGO) as an electrode material for non-aqueous energy storage devices such as supercapacitors and Li-ion batteries. TRGO based non-aqueous symmetric supercapacitor is constructed and shown to deliver maximum energy and power densities of 60.4Wh/kg and 0.15 kW/kg, respectively. More importantly, symmetric supercapacitor shows an extraordinary cycleability (5000 cycles) with over 80% of capacitance retention.
Electrostatic properties of few-layer MoS2 films
Guolin Hao, Zongyu Huang, Yundan Liu, Xiang Qi, Long Ren, Xiangyang Peng, Liwen Yang, Xiaolin Wei, and Jianxin Zhong
Two-dimensional MoS2-based materials are considered to be one of the most attractive materials for next-generation nanoelectronics. The electrostatic properties are important in designing and understanding the performance of MoS2-based devices. By using Kelvin probe force microscopy, we show that few-layer MoS2 sheets exhibit uniform surface potential and charge distributions on their surfaces but have relatively lower surface potentials on the edges, folded areas as well as defect grain boundaries.
Failure of classical elasticity in auxetic foams
J. H. Roh, C. B. Giller, P. H. Mott, and C. M. Roland
Poisson's ratio, ν, was measured for four materials, a rubbery polymer, a conventional soft foam, and two auxetic foams. We find that for the first two materials, having ν ≥ 0.2, the experimental determinations of Poisson's ratio are in good agreement with values calculated from the shear and tensile moduli using the equations of classical elasticity. However, for the two auxetic materials (ν < 0), the equations of classical elasticity give values significantly different from the measured ν.
Reconfigurable resistive switching devices based on individual tungsten trioxide nanowires
Jie Guo, Yong Zhou, Huajun Yuan, Ding Zhao, Yanling Yin, Kuo Hai, Yuehua Peng, Weichang Zhou, and Dongsheng Tang
In the two-terminal Au/WO3 nanowire/Au electronic device with two Schottky barriers, drifting of oxygen vacancies under strong electric field induced by the bias voltage applied at short distance will result in the effective width of the reverse biased Schottky barrier decreasing, and then result in the memristive effect or resistive switching phenomenon. By unidirectional bias voltage sweeping, the Au/WO3 Schottky contact can be turned gradually and reversibly into Ohmic contact, and then the two-terminal Au/WO3 nanowire/Au resistive switching device can be reconfigured gradually and reversibly from non-rectifying state to either a forward or reverse rectifying state.
- Investigating thermal donors in n-type Cz silicon with carrier density imaging
- Dynamic nonlinear thermal optical effects in coupled ring resonators
- Transient photoreflectance of AlInN/GaN heterostructures
- A rotary piezoelectric actuator using longitudinal and bending hybrid transducer
- Thermal transport in nanostructures
- Electronic structures of oxygen-deficient Ta2O5
- Role of defect states in magnetic and electrical properties of ZnO nanowires
- Correlation between the microstructures and the deformation mechanisms of CuZr-based bulk metallic glass composites
- Defect-induced magnetism in undoped wide band gap oxides: Zinc vacancies in ZnO as an example
- Resistive switching characteristics of Pt/TaOx/HfNx structure and its performance improvement
- Preface: Physics of Cancer
- A Raman spectroscopic investigation of graphite oxide derived graphene
- Effects of conjugated polymer on the magnetotransport properties in La0.7Sr0.3MnO3 ferromagnetic electrodes
- Peculiarly strong room-temperature ferromagnetism from low Mn-doping in ZnO grown by molecular beam epitaxy
The Editors wish to express their appreciation to the referees for their conscientious efforts on behalf of the journal in 2012. Click here for a list.
Physics in China
AIP Advances congratulates Executive Editor Prof. Enge G. Wang on his appointment as the 26th President of Peking University for a 5 year term.
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The American Institute of Physics congratulates this year's Nobel Laureates in Physics, Serge Haroche and David J. Wineland “for ground-breaking experimental methods that enable measuring and manipulation of individual quantum systems."
Special Topic on Physics of Cancer
AIP Advances Executive Editor Robert Austin and other respected scientists have contributed papers to this special topic section that examines the behavior of tumors from the physical, genomic and biological perspectives. The main themes for the special section came from a workshop held in June 2011 at Princeton Physical Sciences Oncology Center, one of twelve such centers funded by the US NIH's National Cancer Institute.
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- Special Topic on Phononics
See Dec 2011 Issue for Selected Articles from Phononics 2011: The First International Conference on Phononic Crystals, Metamaterials and Optomechanics 29 May–2 June 2011, Santa Fe, NM, USA.
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