Nanoscience and nanotechnology

The MIT researchers used a four-step process to create filters from graphene (shown here): (a) a one-atom-thick sheet of graphene is placed on a supporting structure; (b) the graphene is bombarded with gallium ions; (c) wherever the gallium ions strike the graphene, they create defects in its structure; and (d) when etched with an oxidizing solution, each of those defects grows into a hole in the ...

How to create selective holes in graphene

New technique developed at MIT produces highly selective filter materials, could lead to more efficient desalination.

February 25, 2014

The paper test strips, which work similar to a pregnancy test, reveal the presence of proteins associated with cancer. They can also be designed to detect other diseases.

A paper diagnostic for cancer

Low-cost urine test developed by MIT engineers amplifies signals from growing tumors to detect disease.

February 24, 2014

This cross section of a lymph node shows that the molecular
vaccine (green) has been taken up by immune cells in the lymph node.

Hitchhiking vaccines boost immunity

New MIT vaccines that catch a ride to immune cell depots could help fight cancer and HIV.

February 16, 2014

When water molecules (red and white) and sodium and chlorine ions (green and purple) in saltwater (shown at the right) encounter a sheet of graphene (pale blue, center) perforated by holes of the right size, the water passes through (on the left), but the sodium and chlorine of the salt are blocked.

A brighter future for filtered seawater

MIT researchers evaluate graphene’s potential for making desalination economically viable.

February 13, 2014

Visiting graduate student Ryan Oliver with a microscope. Oliver's projects under associate professor of mechanical engineering A. John Hart include the Robofurnace, an automated system for making carbon nanotube forests and studying their growth, and high-throughput manufacturing of polymer microstructures for biosensing.

Improving carbon nanotube consistency in the lab

Bench-top 'Robofurnace' automates chemical vapor deposition process.

February 12, 2014

MIT engineers designed nanoparticles that can deliver short strands of RNA (green) into cells (nuclei are stained blue).

Better RNA interference, inspired by nature

New MIT nanoparticles offer best-ever gene silencing, could help treat liver diseases.

February 10, 2014

Mostafa Bedewy next to hood with a chemical vapor deposition system he uses to make and study carbon nanotube forests. Published research by Bedewy, with Associate Professor of Mechanical Engineering A. John Hart and colleagues, showed that better production methods for aligned carbon nanotubes will require control of both collective chemical and mechanical factors governing their growth and self-...

Carbon nanotubes under stress

Postdoc Mostafa Bedewy shows complex competition between chemical activation and mechanical forces in growing CNT forests.

February 7, 2014

Professor A. John Hart with a folding paper cylinder. Paper's ability to fold and unfold many times and retain its integrity is a motivation for Hart's work on origami-inspired engineering.

Faculty highlight: A. John Hart

Mechanical engineering professor explores the science and technology of nano manufacturing.

February 5, 2014

Researchers develop new method to control nanoscale diamond sensors

Technique allows tiny sensors to monitor small changes in magnetic fields, such as when neurons transmit electrical signals.

January 24, 2014

In the top pair of images, sound waves (blue and yellow bands) passing through a flat layered material are only minimally affected. In the lower images, when sound goes through a wrinkled layered material, certain frequencies of sound are blocked and filtered out by the material.

A new wrinkle in the control of waves

Flexible materials could provide ways to manipulate sound and light.

January 24, 2014

A comparison between an untreated smooth surface (left) and lubricant-impregnated surface (right), after having gypsum-rich water boiled away from it in the lab. The treated surface shows significantly less scale deposition.

New surface treatment stops scale buildup

MIT researchers develop a slippery coating that could prevent the scaling that fouls oil wells and power plants.

January 21, 2014

Seeing things: A new transparent display system could provide heads-up data

New kind of see-through screen could be applied as a thin plastic coating on ordinary glass.

January 21, 2014

A nanophotonic solar thermophotovoltaic device composed of an array of multi‑walled carbon nanotubes as the absorber, a one‑dimensional silicon/silicon dioxide photonic crystal as the emitter, and a 0.55 eV photovoltaic cell.

How to tap the sun’s energy through heat as well as light

New approach developed at MIT could generate power from sunlight efficiently and on demand.

January 19, 2014

Seeing beauty in a materials science world

Marshall Scholar Colleen Loynachan tackles materials science problems with a photographer’s perspective.

January 15, 2014

On a piece of graphene (the horizontal surface with a hexagonal pattern of carbon atoms), in a strong magnetic field, electrons can move only along the edges, and are blocked from moving in the interior. In addition, only electrons with one direction of spin can move in only one direction along the edges (indicated by the blue arrows), while electrons with the opposite spin are blocked (as shown b...

Graphene can host exotic new quantum electronic states at its edges

New approach to use of 2-D carbon material opens up unexpected properties, could unleash new uses.

December 22, 2013

MIT News | Massachusetts Institute of Technology

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