THE DEPARTMENT OF AT STATE
UNIVERSITY OF NEW YORK, POTSDAM N.Y.
Learning through research
Electrochemical Quartz Crystal Nanobalance (EQCN) technique utilizes quartz vibrations and piezoelectric effect to measure mass changes as small as a fraction of a monolayer of atoms
Professor Maria Hepel
State University of New York at Potsdam
44 Pierrepont Ave.
Potsdam , NY 13676, U.S.A.
The discovery of new phenomena at nanoscale and the development of new tools
for emerging nanotechnology era are by far the most challenging scientific
efforts of today.
Chemistry Department of SUNY Potsdam participates actively in this world endeavor by contributing significant research efforts in the following areas:
Published Results of Past and Present Projects
The following Nanotechnology/Nanoscience topics have been studied:
1. Controlled interparticle interaction-driven assembly of gold nanoparticles.
2. Study of DNA interactions with drugs and toxicants using DNA microsensors.
3. Quantum conductance monatomic metal nanobridges.
4. Electrochromic display materials.
5. Synthesis and characterization of titanium dioxide nanotubes and mesoporous materials for electrocatalysis of methanol in fuel cells and for solar energy conversion devices
6. Conformational transitions of albumin and interactions of proteins with submonolayer metal films
7. Decomposition of pollutants by photoelectrocatalytic process on nanostructured semiconductor electrodes
8. In-situ Polymerized Conductive Polymers for Nanocomposite Electrocatalysts with Embedded Pt Nanoparticles for Methanol Fuel Cells.
9. Nanotemplating of metal deposition in ion-gate nanochannels.
M. Hepel, E. Tewksbury, Electrochim. Acta, 49 (2004) 3827;
M. Hepel, E. Tewksbury, J. Electroanal. Chem., 552 (2003) 291;
M. Hepel, J. Electroanal. Chem, 509 (2001) 90.
10. Electrocatalytic properties of gold nanoparticles with 2-5 nm size.
J. Luo, M. Maye, Y. Lou, L. Han, M. Hepel, C. Zhong, Catalysis Today, 77 (2002) 127.
11. Controlled drug release from conductive polymer matrix.
M. Hepel, F. Mahdavi, Microchem. Journal, 56 (1997) 54.
12. Development of piezoelectric immunosensors based on molecular surface structure design.
J. Pribyl, M. Hepel, J. Halamek, P. Skladal, Sensors and Actuators, B91 (2003) 333.
13. Deposition of metal films with silicon carbide nanoparticles for increased hardness and corrosion resistance.
M. Hepel and Christine Mahoney, Electrochem. Glass and Ceramics, Ceramics Trans., 92 (1999) 303.
14. Semiconductor nanowires of WO3 and MoO3.
Published Abstract at the Electrochemical Soc. Meeting, Quebec City, Canada, May 2005.
Examples of Nanoscience / Nanotechnology topics
included in undergraduate teaching science courses
during last two years (2003-2005)
1. Demonstration of atomic forces between molecules including friction imaging.
2. Imaging of bacteria upon chemical treatment using Atomic Force Microscopy, in collaboration with Biology Department.
3. Imaging of collagen fibers using Atomic force Microscopy, in collaboration with Biology Department.
4. Deposition of nanowires on atomic steps on a highly oriented pyrolytic graphite surface (HOPG).
5. Piezosensors for detection of heavy metals and pesticides.
6. Imaging of surface of monolayer films using Atomic Force Microscopy and Scanning Tunneling Microscopy
7. Imaging of interdigitated nanosensor structure by tapping-mode
Atomic Force Microscopy.
8. Effect of corrosion inhibitors on micro- and nano-corrosion of
Research and Teaching Projects in Nanoscience / Nanotechnology
(Current and Planned Projects)
Available equipment to be used in these projects is:
Microprinted circuits for studies of nanowires and molecular electronic devices use sub-microliter solution volume
Quantum Conductance Monatomic Nanobridge Devices
studied using conductanc spectroscopy and AFM/STM
Nanowires of a semiconductor MoO3
obtained by eletrochemical deposition from peroxo-complexes of Mo(VI)
AFM image of microelectrode circuit used in quantum conductance studies of Ni monatomic nanobridges
AFM image of an interdigitated electrode pattern for capacitive nanosensors