Phillip Allen, Department of
Physics and Astronomy, SBU
& James Muckerman, Department of Chemistry, BNL
James Davenport, Computational Science Center, BNL
"Theory of Nanowires and Nanorods."
Current Electronic Structure Theory is constrained by the technical difficulties of the quantum many electron problem. The “density-functional” theory solves many of these difficulties by creative use of “single electron” versions of the quantum theory. The stumbling block is the size of the system, measured by the number N of atoms. DFT can be applied to systems N~100, or, with very big computers, N~1000. However, most important nanoscale materials have N~10,000 or more. This team proposes to solve the large N problem by exploiting the chiral symmetry of nanorods, nanowires, and nanotubes. These are special cases of nanosystems where the growth is one-dimensional: a template of atoms with constant cross-sectional area may grow as a long rod when the atoms on the cylindrical periphery give a low surface energy. The one-dimensional morphology permits a new kind of simplification which has not been much exploited.
Patrick Hearing, Department of
Molecular Genetics and Microbiology, SBU
& Huilin Li, Biology Department, BNL
Philomena Ostapchuk, Department of Molecular Genetics and Microbiology, SBU
"Cryo-Imaging of Adenovirus Assembly Intermedicates."
The subject of this proposal is to probe the molecular mechanism of virus assembly of the human Adenovirus (Ad). There are more than 50 different isolates of human Ad that cause a range of diseases including the common cold (pharyngitis), more acute respiratory illness (pneumonia and acute respiratory disease, ARD), pink eye (conjunctivitis), and GI tract infections (gastroenteritis). Ad is a leading cause of diarrhea worldwide. Ad also is a promising agent for human gene therapy to treat inherited and acquired diseases such as hemophilia and cancer, and for use as a vaccine-based vector.
Serge Luryi, Department of
Electrical and Computer Engineering, SBU
& Alexander Kastalsky, Senor CAT, SBU
Aleksey Bolotnikov, Nonproliferation and National Security Department, BNL
Zheng Li, Instrumentation Division, BNL
Paul O'Connor, Instrumentation Division, BNL
"Semiconductor Scintillator: Detector of High-Energy Radiation."
This team proposes
a new scintillation-type detector in which high-energy radiation produces
electron-hole pairs in a direct-gap semiconductor material that subsequently recombine producing
infrared light to be registered by a photo-detector. The key goal is to make the semiconductor
essentially transparent to its own infrared light, so that photons generated deep inside the semiconductor
could reach its surface
without tangible attenuation. This holds a major promise for homeland security applications, where the key issue is positive identification of the radiation source and elimination of false alarmsThe primaryD).
Andreas Mayr, Chemistry
& Etsuko Fujita, Chemistry Department, BNL
"3D Nanostructures as Catalysts for Solar Fuel Production."
The long-term goal of this collaboration is the development of a highly efficient and versatile catalyst system for solar fuel production. The effort will initially focus on the photochemical reduction of carbon dioxide, but will also be aimed at other energy-related types of small molecule activation such as the reduction of carbon monoxide and dinitrogen. (The reduction of carbon monoxide is closely associated with the overall process of carbon dioxide reduction, since carbon monoxide is one of the potential products of carbon dioxide reduction).
Sanjay Sampath, Department
of Materials Science and Engineering, SBU
& Lance Cooley, Department of Materials Science and Engineering, SBU
James Marzik, Specialty Materials, BNL
"Nanopowder Synthesis by Plasma Chemical Reactions with Initial Applications in Alloyed MGB2 Superconductors."
The aim of this
seed grant is to develop an understanding of the thermodynamics and kinetics of
boride nanopowder synthesis. Through existing and proposed linkages, this
program will also have an immediate impact on national superconductor
development programs. Using this program as a model, the team then hopes to seek funding for the
construction of a new, versatile reactor and a concomitant
research program to explore a variety of nanopowder compounds made by plasma chemical reactions. Novel properties of nanopowders as quantum dots, composite electronic systems, catalysts, covalent metals, and other behavior motivates such a program, because they benefit solar energy, thermoelectrics, high-temperature materials, and other basic needs for national energy security.