A molecular machine, or nanomachine, is any discrete number of molecular components that produce quasi-mechanical movements (output) in response to specific stimuli (input). The expression is often more generally applied to molecules that simply mimic functions that occur at the macroscopic level. The term is also common in nanotechnology where a number of highly complex molecular machines have been proposed that are aimed at the goal of constructing a molecular assembler. Molecular machines can be divided into two broad categories; synthetic and biological.
Molecular systems capable of shifting a chemical or mechanical process away from equilibrium represent a potentially important branch of chemistry and nanotechnology. As the gradient generated from this process is able to perform useful work these types of systems, by definition, are examples of molecular machinery.
Read more about Molecular Machine: Historical Insight and Studies, Modern Insights and Studies, Examples of Molecular Machines
Famous quotes containing the word machine:
“I brush my hair,
waiting in the pain machine for my bones to get hard,
for the soft, soft bones that were laid apart
and were screwed together. They will knit.
And the other corpse, the fractured heart,
I feed it piecemeal, little chalice. I’m good to it.”
—Anne Sexton (1928–1974)