The
miniaturization of electronic devices has revolutionized the technology
of today, but the miniaturization of mechanical devices promises
to revolutionize the technology of the future. Recent progress in
MEMS (micro-electro-mechanical systems) has already begun this revolution
by miniaturizing a wide range of mechanical sensors/actuators and
integrating them onto silicon chips. State-of-the-art
MEMS devices, however, are still measured in microns, significantly
larger than the constituent atoms and molecules that make up matter.
Yet, there is no fundamental reason why machines and motors cannot
be scaled down to the nanometer size of individual molecules. Such
nano-electro-mechanical devices and systems (NEMS) would provide
completely new methods for manipulating matter and for interfacing
with biological systems.
Biological macromolecules, on the other
hand, can also be thought of as nanomechanical objects they have
structure, mass, and stiffness. Their interactions with other molecules
are mechanical in nature - they involve forces and motion. These
forces have various origins: electrostatic, steric, hydrogen bonding,
van der Waals, and entropic. In essence, nanomechanics is the universal
language for biomolecular interactions and behavior.
Mechanical
devices that can measure forces (picoNewton to nanoNewton) and motion
(nanometers) at levels relevant for biomolecules and thereby interpret
their universal language, provide insight into biomolecular behavior
and interactions that other approaches cannot provide. One of the
goals of this center is to develop these nanomechanical tools to
understand biomolecular interactions. True nano-mechanical miniaturization
would inspire and realize truly revolutionary applications involving
molecular transport, replication, and energy conversion, with substantial
impact on important technologies such as chemical/biological sensing,
computation, communication and power generation.