Joseph J. Wehrer

Original image (attached to acidic board) was photographed and negative created by Lance Burghardt. Photographer of original print unknown

A facile method for the synthesis of Au/PEDOT:PSS nanocomposite

In this work, we have successfully synthesized Au nanoparticles (NPs) in situ in PEDOT:PSS deploying a room temperature atmospheric pressure microplasma. The size of the AuNPs is a function of the gold salt precursor concentration and the plasma processing time. The Au/polymer colloids after processing remain well dispersed over a prolonged period of time. Both gold salt concentration and the plasma processing time have influence on the electrical conductivity of the dried Au/PEDOT:PSS nanocomposite films. An enhanced electrical conductivity of the Au/PEDOT:PSS nanocomposite films has been attributed to (i) the interfacial ligand formation between the S atoms in PEDOT:PSS molecules and the Au surface and (ii) charge transfer from the AuNPs to the holes of PEDOT:PSS molecules.

Ventajas que ofrece ATPDEA para Colombia en términos de Competitividad y Productividad para el sector de las confecciones Colombiano

Analizar el impacto económico en términos de competitividad y productividad, de la ampliación del programa de Preferencias Arancelarias Andinas y Erradicación de Drogas en las exportaciones del sector de confecciones colombiano

Transportation for older Americans - issues and options for the decade of the 1980's. Final report.

Transportation Department, Washington, D.C.