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An SANS Study of Decomposition Kinetics in Amorphous Cu_(12.5)Ni_(10)Zr_(41)Ti_(14)Be_(22.5)

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Journal of Materials Science & Technology 1998年第3期14卷 193-199页

作者： Junming LIU(national laboratory of solid state microstructures, nanjing university and Center for Advanced Studies in Scienceand Technology of microstructures, nanjing 210093, china) national laboratory of solid state microstructures Nanjing University Center for Advanced Studies in Science and Technology of Microstructures Nanjing 210093 China

Phase decomposition in amorphous Cu12.5Ni10Zr411Ti14Be22.5 alloy as annealed in the super-cooled liquid range was studied by applying small angle neutron scattering (SANS). As annealed between 600 K and 700 K, the alloy was observed to decompose into two new amorphous phases,with the second phase precipitates embedded in the matrix of the first. Long time annealing of the alloy results in crystallization in addition to evolution of the decomposed *** kinetic diagram of the decomposition and crystallization for this alloy is given. The second phase precipitates have several nanometers in size and occupy a quite low volume fraction. The decomposition of the supercooled liquid in overall temperature range exhibits the features of spinodal reaction.

关键词： Be Zr SANS Ni Ti

Study on the thermal stability and electrical properties of the high-k dielectrics (ZrO_2) _x(SiO_2)_(1-x)

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Science china(Technological Sciences) 2009年第8期52卷 2222-2226页

作者： Lü ShiCheng1,2, YIN Jiang1,2, XIA YiDong2,3, GAO LiGang2,3 & LIU ZhiGuo2,3 1 department of physics, nanjing university, nanjing 210093, china 2 national laboratory of solid Sate microstructures, nanjing university, nanjing 210093, china 3 department of Materials Science and Engineering, nanjing university, nanjing 210093, china department of physics Nanjing University Nanjing China national laboratory of solid Sate microstructures Nanjing University Nanjing China department of Materials Science and Engineering Nanjing University Nanjing China

(ZrO2)x(SiO2)1-x (Zr-Si-O) films with different compositions were deposited on p-Si(100) substrates by using pulsed laser deposition technique. X-ray photoelectron spectra (XPS) showed that these films remained amorphous after annealing at 800℃ with RTA process in N2 for 60 s. The XPS spectra indi- cated that Zr-Si-O films with x=0.5 suffered no obvious phase separation after annealing at 800℃, and no interface layer was formed between Zr-Si-O film and Si substrate. While Zr-Si-O films with x >0.5 suffered phase separation to precipitate ZrO2 after annealing under the same condition, and SiO2 was formed at the interface. To get a good interface between Zr-Si-O films and Si substrate, Zr-Si-O films with bi-layer structure (ZrO2)0.7(SiO2)0.3/(ZrO2)0.5(SiO2)0.5/Si was deposited. The electrical properties showed that the bi-layer Zr-Si-O film is of the lowest equivalent oxide thickness and good interface with Si substrate.

关键词： high-k dielectric film pulsed laser deposition pseudo ternary alloy

Study on the Relationship between Lamellar Spacing and Growth Rate inthe Regular Eutectic Growthby Monte-Carlo Simulation

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Journal of Materials Science & Technology 2002年第4期18卷 322-324页

作者： Weimin WANG, Junming LIU and Zhiguo LIUlaboratory of solid state microstructures, nanjing university, nanjing 210093, china Lab. of solid state microstructures Nanjing Univ. Nanjing 210093 China

A modified Monte-Carlo(MC) method to simulate the regular growth of binary eutectic alloys is presented. It is found that the growth rate has a linear dependence on the chemical potential difference between the solid and liquid; the relation between the lamellar spacing A and growth rate R accords well with the prediction of Jackson-Hunt(JH) theory unless the growth rate is very low.

关键词： Eutectic Monte-Carlo simulation Growth

Interfacial Tunnel-type GMR in Granular PerovskiteLa_(1-x)Sr_xMnO_3

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Journal of Materials Science & Technology 1999年第4期15卷 373-374页

作者： Ning ZHANG and Minyu ZENG(department of physics, nanjing Normal university, nanjing 210097, china)WeiPing DING, Wei ZHONG and Youwei DU(national laboratory of solid state microstructures, nanjing university, nanjing 210093, china)To whom correspondence sh department of physics Nanjing Normal University Nanjing 210097 China national laboratory of solid state microstructures Nanjing University Nanjing 210093 China

The spin-dependent intedecial tunneling and the corresponding tunnef-type magnetoresistance (TMR) have been observed in granular perovskite La_(1-x)Sr_xMnO_3 with x from 0.05 to *** shows that the intedecial tunneling originates from the magnetic difference between thegrain core and the sudece, and the TMR stems from the field-induced change of magnetic orderin the interface.

关键词： Sr x)SrxMnO3 MnO GMR Interfacial Tunnel-type GMR in Granular PerovskiteLa type

Surface configurations during annealing of sputter-deposited NiTi thin films

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Chinese Science Bulletin 1997年第23期42卷 2019-2020页

作者： GONG Fengfei, JIANG Enyong, SHEN Huimin and WANG Yening1. department of Applied physics, Tianjin university, Tianjin 300072 The national laboratory of solid state microstructures, nanjing university, nanjing 210008 Center for Advanced Studies in Science and Technology of microstructures, nanjing 210093, china 2. department of physics, Tianjin university, Tianjin 300072, china 3. national laboratory of solid state microstructures, nanjing university, nanjing 210008, Center for Advanced Studies in Science and Technology of microstructures, nanjing 210093, china. department of Applied physics Tianjin University Tianjin The national laboratory of solid state microstructures Nanjing University Nanjing Center for Advanced Studies in Science and Technology of microstructures Nanjing China department of physics Tianjin University Tianjin China national laboratory of solid state microstructures Nanjing University Nanjing

SPUTTER-DEPOSITED NiTi thin films are becoming more and more important because of their po-tential applications to the intelligent thin-film systems. The as-deposited NiTi thin films pre-pared by magnetron sputtering are generally amorphous. Because the amorphous NiTi thinfilms cannot show shape memory effect, they should be crystallized under appropriate anneal-

关键词： NiTi Surface configurations during annealing of sputter-deposited NiTi thin films

DISTRIBUTION OF VORTEX BARRIERS AT DIFFERENT TEMPERATURES FOR TL 2212 FILM

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南京大学学报(自然科学) 1999年第4期35卷 500-501页

作者： Lin Fenyong Ding Shiying (national laboratory of solid state microstructures and department of physics, nanjing university,210093,nanjing,PRC) 南京大学物理系固体微结构物理国家重点实验室江苏

Polymer-assisted nanoparticulate contrast-enhancing materials

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Science china Chemistry 2010年第3期53卷 479-486页

作者： DING Yin1,3,HU Yong2,WU Wei1 & JIANG XiQun1 1laboratory of Mesoscopic Chemistry and department of Polymer Science and Engineering,College of Chemistry & Chemical Engineering,nanjing university,nanjing 210093,china 2national laboratory of solid state Microstructure,department of Material Science and Engineering,nanjing university,nanjing 210093,china 3Key laboratory of Analytical Chemistry for Life Science,Ministry of Education,School of Chemistry and Chemical Engineering,nanjing university,nanjing 210093,china laboratory of Mesoscopic Chemistry and department of Polymer Science and Engineering College of Chemistry & Chemical Engineering Nanjing University Nanjing China Key laboratory of Analytical Chemistry for Life Science Ministry of Education School of Chemistry and Chemical Engineering Nanjing University Nanjing China national laboratory of solid state Microstructure Department of Material Science and Engineering Nanjing University Nanjing China

The application of nanotechnology in medicine research has significant potential in modern biomedical research,disease diagnosis and *** fluorophore-based detection techniques have been widely used as imaging and signal transduction tools for the detection of trace levels of *** photosensitivity of the fluorophores,however,limits their application in such complex environments as living bio-systems where degradation or photobleaching *** nanoparticles have unique and stable optical,electrical,magnetic and catalytic properties because of their various shapes,sizes and *** potential of the nanoparticles as novel imaging agents has been studied as a possible solution to this *** modification of inorganic nanoparticles could enhance their biostability in physiological conditions and ability of targeting bioactive molecules.

关键词： contrast agent cell image gold nanoparticles iron oxide nanoparticles carbon nanotubes polymeric-inorganic hybrid nanoparticles

Sensitive biosensing strategy based on functional nanomaterials

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Science china Chemistry 2011年第8期54卷 1202-1217页

作者： JU HuangXian state Key laboratory of Analytical Chemistry for Life Science department of Chemistry, nanjing university, nanjing 210093, china state Key laboratory of Analytical Chemistry for Life Science department of Chemistry Nanjing University Nanjing China

The first decade of the 21st century has been labeled as "the sensing decade". The functional nanomaterials offer excellent platforms for fabrication of sensitive biosensing devices, including optical and electronic biosensors. A lot of works have fo- cused on the biofunctionalization of different nanomaterials, such as metal nanoparticles, semiconductor nanoparticles and carbon nanostructures, by physical adsorption, electrostatic binding, specific recognition or covalent coupling. These biofunc- tionalized nanomaterials can be used as catalysts, electronic conductors, optical emitters, carriers or tracers to obtain the ampli- fied detection signal and the stabilized recognition probes or biosensing interface. The designed signal amplification strategies have greatly promoted the development of stable, specific, selective and sensitive biosensors in different fields. This review in- troduces some novel principles and detection strategies in the area of biosensing, based on functional nanomaterials. The gen- eral methods for biofunctionalization of nanomaterials with biomolecules and their biosensing application in immunoassay of protein, DNA detection, carbohydrate analysis and cytosensing are also described.

关键词： nanobiosensing biosensors nanomaterials biofunctionalization signal amplification bioanalysis biological recognition

HARMONIC RESPONSE AND FLUX CREEP OF SUPERCONDUCTOR

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南京大学学报(自然科学) 1999年第5期 634-635页

作者： Ding Shiying (department of physics,national laboratory of solid state microstructures,nanjing university, Center for Advance Studies in Science and Technology of microstructures,210093,nanjing, PRC)

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关键词： ac susceptibility superconductivity harmonics