Wanke, Michael C., Lehmann, Olaf, Muller, Kurt, Qingzhe Wen, and Stuke, Michael
Science. Feb 28, 1997, Vol. 275 Issue 5304, p1284, 3 p. photograph
Laser photochemistry -- Usage, Photonics -- Research, and Microstructure -- Research
Three-dimensional periodic microstructures of aluminum oxide, which are important for creating photonic band-gap structures (PBGs), were fabricated by laser rapid prototyping by means of laser-induced direct-write deposition from the gas [...]
Science. Dec 8, 1995, Vol. 270 Issue 5242, p1644, 3 p. photograph
Microstructure -- Research, Prototypes, Engineering, and Photolithography -- Research
Lithography and etching techniques that were originally developed for microelectronics applications can also be used to fabricate sensors, actuators, or other micromechanical devices on silicon. However, these techniques require photo [...]
Science. March 3, 1995, Vol. 267 Issue 5202, p1274, 2 p. photograph
Chemical vapor deposition -- Innovations, Fibers, and Microstructure
Researchers have demonstrated that laser-assisted chemical vapor deposition (LCVD) can be used to phototype complex and freestanding microstructures. The LCVD method provides a cost-effective means for making endless, ultra-strong fibers.
Schaedler, T.A., Jacobsen, A.J., Torrents, A., Sorensen, A.E., Lian, J., Greer, J.R., Valdevit, L., and Carter, W.B.
Science. Nov 18, 2011, Vol. 334 Issue 6058, p962, 4 p.
Lattice theory -- Analysis, Nanotubes -- Properties, and Nanotubes -- Analysis
Ultralight (<10 milligrams per cubic centimeter) cellular materials are desirable for thermal insulation; battery electrodes; catalyst supports; and acoustic, vibration, or shock energy damping. We present ultralight materials based on periodic hollow-tube microlattices. These materials are fabricated by starting with a template formed by self-propagating photopolymer waveguide prototyping, coating the template by electroless nickel plating, and subsequently etching away the template. The resulting metallic microlattices exhibit densities [rho] [greater than or equal to] 0.9 milligram per cubic centimeter, complete recovery after compression exceeding 50% strain, and energy absorption similar to elastomers. Young's modulus E scales with density as E ~ [[rho].sup.2], in contrast to the E ~ [[rho].sup.3] scaling observed for ultralight aerogels and carbon nanotube foams with stochastic architecture. We attribute these properties to structural hierarchy at the nanometer, micrometer, and millimeter scales. 10.11126/science.1211649