Optical emission investigation of laser-produced MgB2 plume expanding in an Ar buffer gas
Optical emission spectroscopy is used to study the dynamics of the plasma generated by pulsed-laser irradiation of a MgB2 target, both in a vacuum and at different Ar buffer gas pressures. The analysi...
Optical emission spectroscopy is used to study the dynamics of the plasma generated by pulsed-laser irradiation of a MgB2 target, both in a vacuum and at different Ar buffer gas pressures. The analysi...
Origins of micropipes in SiC crystals
It is argued that micropipes in SiC crystals grown by the physical vapor transport process form independently of screw dislocations. A mechanism involving liquid droplets of silicon containing some ca...
It is argued that micropipes in SiC crystals grown by the physical vapor transport process form independently of screw dislocations. A mechanism involving liquid droplets of silicon containing some ca...
Microairplane propelled by laser driven exotic target
Appl. Phys. Lett. 80, 4318 (2002); doi:10.1063/1.1485313
Issue Date: 10 June 2002
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We propose a propulsion concept to drive a microairplane by laser that can be used for observation of climate and volcanic eruption. Since it does not have to develop thrust for vertical takeoff, and it has no engine in the normal sense, the microairplane can be very light, with its payload consisting only of observation and communication equipment. In order to demonstrate the concept, we succeeded in flying a paper microairplane driven by a 590 mJ, 5 ns pulse yttrium–aluminum–garnet laser that impinges on a double-layer "exotic target." The coupling efficiency agrees well with simulations and with experiments. ©2002 American Institute of Physics.
| History: | Received 19 November 2001; accepted 23 April 2002 |
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http://link.aip.org/link/?APPLAB/80/4318/1 |
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