We describe monocrystalline graphitic films, which are a few atoms thick but are nonetheless stable under ambient conditions, metallic, and of remarkably high quality. The films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands, and they exhibit a strong ambipolar electric field effect such that electrons and holes in concentrations up to 10 13 per square centimeter and with room-temperature mobilities of ∼10,000 square centimeters per volt-second can be induced by applying gate voltage.

http://science.sciencemag.org/content/sci/306/5696/666.full.pdf

Electric Field Effect in Atomically Thin Carbon Films

다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1（PfPMP1）与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员，通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects. Some of these applications are now realized in products. Others are demonstrated in early to advanced devices, and one, hydrogen storage, is clouded by controversy. Nanotube cost, polydispersity in nanotube type, and limitations in processing and assembly methods are important barriers for some applications of single-walled nanotubes.

http://science.sciencemag.org/content/sci/297/5582/787.full.pdf

Carbon Nanotubes--the Route Toward Applications

We demonstrate carbon nanotube assembly by cooperatively rotating carbon nanotubes in vertically-oriented nanotube arrays (forests) and make 5-centimeter-wide, meter-long transparent sheets These self-supporting nanotube sheets are initially formed as a highly anisotropic electronically conducting aerogel that can be densified into strong sheets that are as thin as 50 nanometers The measured gravimetric strength of orthogonally oriented sheet arrays exceeds that of high strength steel sheetCopyright © 2005 by ASME

Flipping Carbon Nanotubes to Continuously Produce Strong, Transparent, Multifunctional Sheets

Statistic Theory of Multiple Exciton Generation in Quantum Dot Based Solar Cells

Using Bogoliubov-de Gennes formalism for inhomogeneous systems, we have studied superconducting properties of a bundle of packed carbon nanotubes, making a triangular lattice in the bundle's transverse cross-section. The bundle consists of a mixture of metallic and doped semiconducting nanotubes, which have different critical transition temperatures. We investigate how a spatially averaged superconducting order parameter and the critical transition temperature depend on the fraction of the doped semiconducting carbon nanotubes in the bundle. Our simulations suggest that the superconductivity in the bundle will be suppressed when the fraction of the doped semiconducting carbon nanotubes will be less than 0.5, which is the percolation threshold for a two-dimensional triangular lattice.

/pdf/superconductivity-in-an-inhomogeneous-bundle-of-metallic-and-q0nkwpwyp7.pdf

Superconductivity in an inhomogeneous bundle of metallic and semiconducting nanotubes

Carbon nanotube, oriented free standing sheets can be laminated on any surface asВ selective solar absorbers while simultaneously dry spun in a highly controlled processВ from vertically oriented forests grown by CVD. We have found that properties of aВ CNT forest strongly correlate with the optical transparency and reflectivity of CNTВ sheets required for solar selective coatings and can be properly tuned for optimalВ coatings for solar collectors. We study absorptive and emissive properties of CNTВ sheets that are laminated by a simple automated and controlled process, developedВ for coating of cylindrical glass tubes for evacuated solar collectors (ETC). TheВ advantages of Joule heating of CNT coatings are demonstrated and test resultsВ described, showing a unique property of fast heating as compared to slow heating inВ conventional solar water heaters.

/pdf/carbon-nanotube-dry-spinnable-sheets-for-solar-selective-yplaqky12c.pdf

Carbon Nanotube Dry Spinnable Sheets for Solar Selective Coatings by Lamination

A technique utilizing polyelectrolytes to assist in the self assembly of colloidal silica spheres into ordered crystallites is introduced. Techniques for coating silica spheres with poly(anilinesulfonic) acid, polypyrrole, and poly[2-methoxy-5-(2′-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV) are described with a self assemble method to guide them into face centered cubic (FCC) opals and into thin films with star shaped opalescent patterns. Inverse gold photonic crystals constructed from silica opal templates were constructed by the heat conversion of gold chloride to metallic gold and inverse gold/ polypropylene composite photonic crystals were fabricated. Inverse conjugated polymer/ polypropylene composite photonic crystals were constructed with MEH-PPV, poly(anilinesulfonic) acid and polypyrrole. The photoluminescence from MEH-PPV/ polypropylene photonic crystals was blue shifted compared to a uniform MEH-PPV film. Chalcogenide was infiltrated into 1.5µm opals and inverse chalcogenide photonic crystals were fabricated.

Anvar A. Zakhidov

Papers

Flipping Carbon Nanotubes to Continuously Produce Strong, Transparent, Multifunctional Sheets

Statistic Theory of Multiple Exciton Generation in Quantum Dot Based Solar Cells

Superconductivity in an inhomogeneous bundle of metallic and semiconducting nanotubes

Carbon Nanotube Dry Spinnable Sheets for Solar Selective Coatings by Lamination

Functional Polymeric Photonic Crystals for Infra-Red Bands by Guided Colloidal Assembly Techniques