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Displaying 44501 - 44525 of 73960

Separation of Large Circular DNA by Electrophoresis in Agarose Gels

January 1, 2002
Author(s)
Kenneth D. Cole, C M. Tellez
The electrophoresis of circular DNA, ranging in size from 4.4 kilobase pairs (kbp) to 220 kbp, was studied in agarose gels. Bacterial artificial chromosome (BAC) DNA was used as a source of large supercoiled and open circular (relaxed) forms. the open

Silicon Nanostructures Fabricated by Scanning Probe Lithography and TMAH Etching

January 1, 2002
Author(s)
F S. Chien, W F. Hsieh, S Gwo, Andras Vladar, John A. Dagata
Fabrication of silicon nanostructures is a key technique for the development of monolithically integrated optoelectronic circuits. We demonstrate that the process of scanning probe lithography (SPL) and anisotropic TMAH etching is a low-cost and reliable

Simultaneous Phase Control of Li 2 Wave Packets in Two Electronic States

January 1, 2002
Author(s)
H U. Stauffer, J B. Ballard, Z Amitay, S R. Leone
State-selective phase control of rotational Li 2 wave packets prepared simultaneously in the E( 1ς u +) and E( 1ς g +) electronic state by resonant impulsive simulated Raman scattering, is demonstrated. Following the initial population of a rovibrational

Small Angle Neutron Scattering From Viscoelastic Polymer-Clay Solutions

January 1, 2002
Author(s)
G Schmidt, A Nakatani, Paul Butler, Charles C. Han
The influence of shear on viscoelastic polymer-clay solutions was investigated by means of small-angle neutron scattering (SANS) under shear. SANS measured the shear-induced orientation of polymer and platelets. With increasing shear rate an anisotropic

Small-Scale Tactile Graphics for Virtual Reality Systems

January 1, 2002
Author(s)
John W. Roberts
¿¿¿As virtual reality technology moves forward, there is a need to provide the user with options for greater realism for closer engagement to the human senses. Haptic systems use force feedback to create a large-scale sensation of physical interaction in a
Displaying 44501 - 44525 of 73960
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