Many-body Anderson localization in one dimensional systems

We show, using quasi-exact numerical simulations, that Anderson localization of one-dimensional particles in a disordered potential survives in the presence of attractive interaction between particles. The localization length of the composite particle can be computed analytically for weak disorder and is in good agreement with the quasi-exact numerical observations using Time Evolving Block Decimation. Our approach allows for simulation of the entire experiment including the final measurement of all atom positions.Comment: 12pp, 5 fig, version accepted in NJ

Creep in Photovoltaic Modules: Examining the Stability of Polymeric Materials and Components

Interest in renewable energy has motivated the implementation of new polymeric materials in photovoltaic modules. Some of these are non-cross-linked thermoplastics, in which there is a potential for new behaviors to occur, including phase transformation and visco-elastic flow. Differential scanning calorimetry and rheometry data were obtained and then combined with existing site-specific time-temperature information in a theoretical analysis to estimate the displacement expected to occur during module service life. The analysis identified that, depending on the installation location, module configuration and/or mounting configuration, some of the thermoplastics are expected to undergo unacceptable physical displacement. While the examples here focus on encapsulation materials, the concerns apply equally to the frame, junction-box, and mounting-adhesive technologies

Chemical sequencing of disulfide-crosslinked oligodeoxyribonucleotides

Oligodeoxyribonucleotides containing a novel disulfide crosslink are shown to be amenable to chemical sequencing using standard sequencing reagents following reduction of the disulfide with DTT and selective alkylation of the free thiols with N-ethylmaleimide. This strategy will facilitate conformational and molecular recognition studies of DNA stabilized by crosslinking.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/30570/1/0000205.pd