molecular machines  MIT Media Lab

A schematic of DNA dehybridization using RF radiation.

Electronic Control of Biomolecules
We have developed a technique for externally addressing biomolecules by covalently attaching nanocrystals which serve as antennas. The gold nanocrystal antennas are heated by an external alternating magnetic field and transfer the heat to the biomolecule. The heating effect can be used to dehybridize DNA and also regulate enzymatic activity of a protein. This project is in collaboration with the Center for Biomedical Engineering.  

A circuit pattern printed to micron resolution

Printed Electronics
We are developing materials and methods for the printing of high-quality inorganic semiconductor devices. By exploiting the reduced melting point and high solubility of nanoparticles we have demonstrated that inorganic materials can be processed at plastic compatible temperatures. Coupled with our efforts in sub-micron printing, microelectronic devices produced from nanoparticle-based inks promise to enjoy the processing advantages usually associated with organic materials while retaining the performance advantages typically associated with inorganic materials.

An inorganic semiconductor droplet processed at plastic compatible temperatures. The CdSe nanocrystals used are in the 2-3 nm range.

 An ink jet printed thermal actuator

Printed Machines

The printing of nanoparticle-based inks has been extended to produce three dimensional structures consisting of hundreds of layers. Linear drive motors and thermal actuators have been demonstrated.

 Electronic ink microcapsules

Printed Displays

Microencapsulated electrophoretic displays offer low power, flexibility, high contrast, bistability and flexibility for a wide range of applications including electronic books, signs, and portable hand held devices.