Physics and Astronomy|
NanoMechanical and Nanofluidic Systems,
California NanoSystems Institute
Ph.D., Rockefeller University, 1970
Department of Physics & Astronomy
Mail Code: 154705
Los Angeles, CA 90095
Office Phone Number:
Technical Research Interest:
Recent research has explored energy focusing phenomena in
off equilibrium continuous systems. Fluids and solids which are
driven off equilibrium do not return smoothly to the equilibrium
state. Instead they can display a wide range of energy focusing
phenomena. The limits of focusing are often determined by
processes at the nanoscale. An example is sonoluminescence
where pulsating bubbles concentrate diffuse acoustic energy
by 12 orders of magnitude to make picosecond flashes of light.
In a one megahertz sound field the temperature inside the
collapsed bubble reaches one million degrees (Physical Review
Letters 92, 124301, 2004). A compelling issue is whether the
energy density becomes large enough to trigger nuclear fusion
in a hydrogenated bubble. Our first attempt to observe bubble
fusion was reported in a one- hour documentary filmed in our
lab, October 2004, by the BBC: "An experiment to Save the
World". Although these results were negative, our project is
ongoing and we predict that someone will achieve success with
some region of cavitation parameter space. In another systempyroelectric
crystals we actually achieved nuclear fusion in a
very simple compact arrangement. By heating and cooling a
walnut sized sealed object which contained lithium tantalate and deuterium inside, we generated fusion by products such
as 2.45MeV neutrons (Naranjo, Gimzewski, Putterman, Nature
April 28, 2005).|
J. R. Hird, C. G. Camara, and S. J. Putterman, A triboelectric x-ray source, Appl. Phys. Lett.
, 2011, 98 (13).
C. G. Camara, J. V. Escobar, J. R. Hird and S. J. Putterman, Mechanically driven millimeter source of nanosecond X-ray pulses, Appl Phys B
, 2010, 99 (4), 613-7.
S Putterman, A physicist links magnetism, force and fatigue, Nature
, 2008, 454 (257).
Carlos G. Camara1, Juan V. Escobar1, Jonathan R. Hird & Seth J. Putterman, Correlation between nanosecond X-ray flashes and stick?slip friction in peeling tape, Nature
, 2008, 455 (7216), 1089-92.
Bass, A. Ruuth, S. J. Camara, C. Merriman, B. Putterman, S.
, Molecular dynamics of extreme mass segregation in a rapidly collapsing bubble
, Phys Rev Lett
, 2008, 101
Alexander Bass, Seth Putterman, Barry Merriman and Steven J. Ruuth, Symmetry reduction for molecular dynamics simulation of an imploding gas bubble, Journal of Computational Physics
, 2008, 227 (3), 2118-2129.
Tang V, Meyer G, Morse J, Schmid G, Spadaccini C, Kerr P, Rusnak B, Sampayan S, Naranjo B, Putterman S, Neutron production from feedback controlled thermal cycling of a pyroelectric crystal, Rev Sci Instrum
, 2007, 78 (12), 123504.
Camara, C. G. Hopkins, S. D. Suslick, K. S. Putterman, S. J.
, Upper bound for neutron emission from sonoluminescing bubbles in deuterated acetone
, Phys Rev Lett
, 2007, 98
D. Flannigan, S.D. Hopkins, C. Camara, K.S. Suslick, S. Putterman, Measurement of Pressure and Density Inside a Single Sonoluminescing Bubble, Physical Review Letters
, 2006, 96 (20), 204301.
S. Hopkins, B. Kappus, K. Suslick, C. Camara, S. Putterman, Dynamics of a Sonoluminescing Bubble in Sulfuric Acid, Physical Review Letters
, 2005, 95 (25), 254301.
B. Naranjo, J. Gimzewski, S. Putterman, Observation of Nuclear Fusion Driven by a Pyroelectric Crystal, Nature
, 2005, 434, 1115-1117.
C. Camara, S. Putterman, E. Kirilov, Sonoluminescence from a Single Bubble Driven at 1MHz, Phys. Rev. Lett.
, 2004, 92 (12), 124301.
Vazquez, G. Camara, C. Putterman, S. J. Weninger, K.
, Blackbody spectra for sonoluminescing hydrogen bubbles
, Phys Rev Lett
, 2002, 88
Ruuth Steven J, Putterman Seth, Merriman Barry, Molecular dynamics simulation of the response of a gas to a spherical piston: implications for sonoluminescence, Physical review. E, Statistical, nonlinear, and soft matter physics
, 2002, 66 (3 Pt 2B), 036310.