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Porous carbon materials as a major candidate for hydrogen storage have attracted many scientific interests because of its light weight, abundant natural precursors, low cost, and high surface area. Tailored pore system of the porous carbon materials for hydrogen storage is an urgent matter. Functional materials group from the department of Physics in University of Science and Technology Beijing has developed a sim...

ZnO has substantial advantages including large exciton binding energy (60 meV) and direct wide band gap (3.37 eV) and has been regarded as one of the most promising candidates for ultraviolet (UV) light-emitting diodes (LEDs). However, there are many practical challenges that must be resolved before it leaps from lab to market-place. The most crucial one is to improve the light-emission efficiency with which the L...

In the RE doped compounds with a b-Ca3(PO4)2 structure, the crystallographic site-occupancy of RE in host lattices has a strong in?uence on the luminescence mechanism and applications, but there is nearly no report . The nature of a monovalent ion plays a critical role in the luminescence properties . The composition change from Ca9Gd(PO4)7 to Ca9MGd2/3(PO4)7 is accompanied by an increase of the luminescence inte...

As one of the key materials for national strategic development for energy resources,thermoelectric(TE)materials are renewable energy-related materials based upon either thermo-voltaic(Seebeck)effect or electro-refrigeration(Peltier)effect. TE-devices made with thermoelectric materials have been applied as essential elements in many cutting-edge technologies(e. Alexander Müller from IBM Zurich Research Laboratory ...

By utilizing the XRD method at Beijing Synchrotron Radiation Facility(BSRF),the inter-distance of the two adjacent layers(IDTL)can be characterized accurately. C The research results provide an effective route to the graphene in high quality,which makes the graphene to be decoupled from its adjacent layers and to be used widely and prepared easily in large scale. Synchrotron radiation sources have helped us to unv...

Indium nitride(InN)is a promising material for high efficiency infrared emitters,detectors,high frequency electronic devices because of its excellent characteristics. Nanostructure materials,a new class of materials with particular properties and superior applications,have received much interest in recent decades. Their research has been published on April 7th 2011 in Nanotechnology*.Well-aligned tilted Zn-doped I...
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