Motors and gear trains with micrometer dimensions and powered by light are fabricated using semiconductor lithography and ...

During femtosecond laser fabrication, photons are mainly absorbed by electrons, and the subsequent energy transfer from electrons to ions is of picosecond order. Hence, lattice motion is negligible ...

FARADAY discovered benzene, Perkin made synthetic dyes from aniline; it was found to be an easy step by nitration and reduction from benzene to aniline. Benzene became ennobled, the world preened ...