Collaborative Research: Structure and Dynamics of Liquid Interfaces Studied by X-Ray and Neutron Scattering
Collaborative Research: Structure and Dynamics of Liquid Interfaces Studied by X-Ray and Neutron Scattering
批准号:
0706665
负责人:
Sunil Sinha
金额:
$30.0万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2007
资助国家:
美国
项目状态:
已结题
起止时间:
2007-09-01 至 2010-08-31
中文摘要
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英文摘要
Non-Technical AbstractMuch of the biological activity of cells takes place on membranes. Consequently, a focus of research on biosensors is the construction of artificial membranes supported on semiconductor surfaces. The goal of the present work is to investigate the structural and dynamic properties of such supported membranes using a sophisticated technique known as coherent x-ray scattering. The results of measurements will be used to construct hydrodynamic models of membrane motion and to determine the values of important physical parameters such as the surface tension, viscosity and elastic moduli. The research will begin on lipid bilayers supported on a substrate and probe the changes in their dynamics as membranes are freed from the substrate by adding intermediate cushioning layers such as cellulose films, or by tethering the membranes above the substrate with proteins. The results of this research will have significant impact on the application of polymer films in composites, adhesives, packaging, biocompatible materials, and biosensors. Students, including from underrepresented groups, will be trained in the use of state-or-the-art synchrotron x-ray facilities at national laboratories.Technical AbstractThis project will study the structure and dynamics of liquid interfaces including both polymeric fluid interfaces and lipid bilayers using grazing incidence x-ray scattering and x-ray Photon Correlation Spectroscopy (XPCS) which utilizes coherent x-ray beams. Coupled with theoretical treatments of viscoelastic hydrodynamics, this work will provide methods of analyzing the interface tension, viscosity and elastic moduli of thin liquid films. Anomalous dynamical behavior in the vicinity of the glass transition temperature for polymeric films will be examined. The work on polymers will provide the starting point for studies of the dynamical fluctuations in lipid bilayer membrane systems. Supported membranes in water on bare or cushioned substrates provide oriented films of sufficient surface area to study with techniques such as x-ray or neutron scattering, XPCS or neutron spin echo. The structure, conformation and dynamics of these layered systems will be studied to elucidate the viscosities and elastic moduli of membranes under various conditions. The results of this research will have significant impact on the application of polymer films in composites, adhesives, packaging, biocompatible materials, and biosensors. Students, including from underrepresented groups, will be trained in the use of state-or-the-art synchrotron x-ray facilities at national laboratories.
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Planning Grant: Engineering Research Center for Smart One Water (SOW)
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批准号:1936893
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项目类别:Standard Grant
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资助金额:$9.95万
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财政年份:2019
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负责人:Sunil Sinha
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依托单位:
CAREER: Sustainable Water Infrastructure Management System (SWIMS)
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批准号:0801018
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项目类别:Standard Grant
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资助金额:$42.5万
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财政年份:2007
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负责人:Sunil Sinha
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依托单位:
CAREER: Sustainable Water Infrastructure Management System (SWIMS)
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批准号:0545933
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2006
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负责人:Sunil Sinha
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依托单位:
FRG: X-Ray Scattering Studies of Structure and Dynamics of Polymer Interfaces
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批准号:0209542
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:2002
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负责人:Sunil Sinha
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依托单位:
Sfc Travel Support (In Indian Currency) to Participate in The Symposium on Current Trends in Physics; Bhubaneswar, India; Jan. 2-10, 1982
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批准号:8121589
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项目类别:Standard Grant
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资助金额:$0.26万
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财政年份:1982
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负责人:Sunil Sinha
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依托单位:
International Conference on Ordering in Two Dimensions; May 28-30, 1980; Lake Geneva, Wisconsin
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批准号:8007950
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项目类别:Standard Grant
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资助金额:$0.5万
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财政年份:1980
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负责人:Sunil Sinha
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依托单位:
Travel to Attend: International Conference on Lattice Dynamics; Paris, France; September 5-9, 1977
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批准号:7722451
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项目类别:Standard Grant
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资助金额:$0.1万
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财政年份:1977
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负责人:Sunil Sinha
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依托单位:
国内基金
海外基金
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