Accession Number:

ADA595209

Title:

Self-Moving Catalytic Nanomotors

Descriptive Note:

Final rept. 15 Sep 2010-14 Sep 2013

Corporate Author:

PENNSYLVANIA STATE UNIV STATE COLLEGE DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

2013-12-11

Pagination or Media Count:

13.0

Abstract:

Work performed during the 3-year grant period includes the following a The design of an efficient, bubble-free, nanoscale motor consisting of a copper-platinum segmented rod that operates as a nanobattery in dilute aqueous bromine or iodine solutions. b The fabrication of motors driven by both catalytic polymerization and depolymerization reactions. The former were observed to exhibit chemotaxis when placed in a monomer gradient. Scaling down to sub-nm scale, enhanced mobility for single catalyst molecules was also observed during substrate turnover. c The identification of a new mechanism for producing self-generated flows. This involves auto diffusio-osmosis due to the dissolution of a wide variety of minerals. Further, the diffusio-osmotic mechanisms was employed to design proof of principle crack sensing and repair systems, as well as to drive flows in and out of dead-end channels. d The design of a polymeric material that is self-powered, operates as a non-mechanical fluid pump in response to molecular level inputs, and remembers the presence of the signal to which it was exposed, even when the signal is fleeting.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE