Walter F. Smith | Researchain

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Featured researches published by Walter F. Smith.

Japanese Journal of Applied Physics | 1987

Possible Observation of Charging Energy Effects in Single Ultra-Small Josephson Tunnel Junctions

Marco Iansiti; A. T. Johnson; Walter F. Smith; C. J. Lobb; M. Tinkham

We report measurements of the current-voltage characteristics of small single tunnel junctions at temperatures between 4.2K and 23mK. Sample parameters are such that their estimated single electron charging energy is comparable to or greater than their Josephson and thermal energies. As the normal resistance increases to the order of the quantum resistance the behavior of the devices studied becomes fundamentally different from that of conventional Josephson junctions. We suggest an interpretation of our low temperature observations which takes into account the competition between the charging, Josephson, and thermal energies of the system, within the framework of a Bloch function description.

Nano Letters | 2004

Photoconductivity of Self-Assembled Porphyrin Nanorods

Alexander D. Schwab; Deirdre E. Smith; Brooks Bond-Watts; Danvers E. Johnston; James Hone; A. T. Johnson; Julio C. de Paula; Walter F. Smith

Proceedings of the National Academy of Sciences of the United States of America | 2005

Toward the development of peptide nanofilaments and nanoropes as smart materials

Daniel E. Wagner ; Charles L. Phillips ; Wasif M. Ali ; Grant E. Nybakken; Emily D. Crawford ; Alexander D. Schwab; Walter F. Smith; Robert Fairman

Nano Letters | 2003

Simple Fabrication of Molecular Circuits by Shadow Mask Evaporation

Yangxin Zhou; A. T. Johnson; James Hone; Walter F. Smith

Physical Review B | 1989

Charging effects and quantum properties of small superconducting tunnel junctions

Marco Iansiti; M. Tinkham; A. T. Johnson; Walter F. Smith; C. J. Lobb

Physical Review Letters | 1987

Charging energy and phase delocalization in single very small Josephson tunnel junctions

Marco Iansiti; A. T. Johnson; Walter F. Smith; H. Rogalla; C. J. Lobb; M. Tinkham

Journal of Physical Chemistry C | 2008

Photoconductivity of self-assembled nanotapes made from meso-tri(4-sulfonatophenyl)monophenylporphine

Andrew L. Yeats; Alexander D. Schwab; Brittany Massare; Danvers E. Johnston; A. T. Johnson; Julio C. de Paula; Walter F. Smith

Journal of Physical Chemistry C | 2010

Effects of O2, Xe, and Gating on the Photoconductivity and Persistent Photoconductivity of Porphyrin Nanorods

C. Kent Riley; Eric A. Muller; Benjamin E. Feldman; Colin M. Cross; Katherine L. Van Aken; Danvers E. Johnston; Ye Lu; A. T. Johnson; Julio C. de Paula; Walter F. Smith

Journal of Physical Chemistry C | 2015