Advertisement
Nanoparticles
Subscribe to Nanoparticles

The Lead

Could I squeeze by you?

October 22, 2014 8:15 am | by Breehan Gerleman Lucchesi, Communications Specialist, Ames Laboratory | News | Comments

Scientists at Ames Laboratory have developed deeper understanding of the ideal design for mesoporous nanoparticles used in catalytic reactions, such as hydrocarbon conversion to biofuels. The research will help determine the optimal diameter of channels within the nanoparticles to maximize catalytic output.

Solid nanoparticles can deform like a liquid

October 13, 2014 8:24 am | by David L. Chandler, MIT News Office | News | Comments

A surprising phenomenon has been found in metal nanoparticles: They appear, from the outside, to...

View Sample

FREE Email Newsletter

Nanoparticles get a magnetic handle

October 9, 2014 10:50 am | by David L. Chandler, MIT News Office | Videos | Comments

A long-sought goal of creating particles that can emit a colorful fluorescent glow in a biological environment, and that could be precisely manipulated into position within living cells, has been achieved by a team of researchers at Massachusetts Institute of Technology and several other institutions. The new technology could make it possible to track the position of the nanoparticles as they move within the body or inside a cell.

Technology that controls brain cells with radio waves earns early BRAIN grant

October 8, 2014 12:30 pm | News | Comments

A proposal to develop a new way to remotely control brain cells from Sarah Stanley, a research associate in Rockefeller Univ.’s Laboratory of Molecular Genetics is among the first to receive funding from President Barack Obama’s BRAIN initiative. The project will make use of a technique called radiogenetics that combines the use of radio waves or magnetic fields with nanoparticles to turn neurons on or off.

New method creates scrolling nanosheets on demand

October 6, 2014 2:37 pm | by Poncie Rutsch, Okinawa Institute of Science and Technology | News | Comments

Nanoparticles could revolutionize the medical industry, but they must first target a specific region in the body, be trackable, and perform their function at the right moment. Researchers in Japan have made progress in this direction with a new type of nanomaterial: the nanosheet. Specifically, they have designed a strong, stable and optically traceable smart 2-D material that responds to pH, or the acidity or basicity of its environment.

Advertisement

Nanoparticles break the symmetry of light

October 6, 2014 12:59 pm | News | Comments

At the Vienna Univ. of Technology gold nanoparticles have been coupled to a glass fiber. The particles emit light into the fiber in such a way that it does not travel in both directions, as one would expect. Instead, the light can be directed either to the left or to the right. This became possible by employing the spin-orbit coupling of light, creating a new kind of optical switch that has the potential to revolutionize nanophotonics.

Study: Nanoparticles accumulate quickly in wetland sediment

October 2, 2014 8:14 am | by Ken Kingery, Duke Univ. | News | Comments

A Duke Univ. team has found that nanoparticles called single-walled carbon nanotubes accumulate quickly in the bottom sediments of an experimental wetland setting, an action they say could indirectly damage the aquatic food chain. According to the research, the risk to humans ingesting the particles through drinking water is slight, but aquatic food chains might be harmed by molecules "piggybacking" on the carbon nanoparticles.

“Stealth” nanoparticles could improve cancer vaccines

October 2, 2014 8:01 am | News | Comments

Cancer vaccines have recently emerged as a promising approach for killing tumor cells before they spread. But so far, most clinical candidates haven’t worked that well. Now, scientists have developed a new way to deliver vaccines that successfully stifled tumor growth when tested in laboratory mice. And the key is in the vaccine’s unique stealthy nanoparticles.

Platinum meets its match in quantum dots from coal

October 1, 2014 8:31 am | by Mike Williams, Rice Univ. | News | Comments

Graphene quantum dots created at Rice Univ. grab onto graphene platelets like barnacles attach themselves to the hull of a boat. But these dots enhance the properties of the mothership, making them better than platinum catalysts for certain reactions within fuel cells.

On the road to artificial photosynthesis

September 26, 2014 8:04 am | by Lynn Yarris, Lawrence Berkeley National Laboratory | News | Comments

The excessive atmospheric carbon dioxide that is driving global climate change could be harnessed into a renewable energy technology that would be a win for both the environment and the economy. That is the lure of artificial photosynthesis in which the electrochemical reduction of carbon dioxide is used to produce clean, green and sustainable fuels. 

Advertisement

World’s smallest reference material is a big plus for nanotechnology

September 25, 2014 9:44 am | News | Comments

If it's true that good things come in small packages, then NIST can now make anyone working with nanoparticles very happy. The institute recently issued Reference Material (RM) 8027, the smallest known reference material ever created for validating measurements of man-made, ultrafine particles between 1 and 100 nm in size.

Researchers develop simple, one-step method to synthesize nanoparticles

September 24, 2014 12:01 pm | News | Comments

Scientists at the U.S. Naval Research Laboratory have introduced a new one-step process using, for the first time in these types of syntheses, potassium superoxide to rapidly form oxide nanoparticles from simple salt solutions in water. An important advantage of this method is the capability of creating bulk quantities of these materials, more than 10 g in a single step.

Smartgels are thicker than water

September 19, 2014 10:08 am | by Poncie Rutsch, Okinawa Institute of Science and Technology | News | Comments

Transforming substances from liquids into gels plays an important role across many industries, but the transformation process, called gelation, is expensive and energy demanding. Instead of adding chemical thickeners and heating or cooling the fluids, as is traditional, researchers in Okinawa are experimenting with microfluidic platforms, adding nanoparticles and biomolecules with used pH, chemical and temperature sensing properties.

Nanoscience makes your wine better

September 18, 2014 1:13 pm | by Anne-Mette Siem, Aarhus Univ. | News | Comments

One sip of a perfectly poured glass of wine leads to an explosion of flavors in your mouth. Researchers in Denmark have now developed a nanosensor that can mimic what happens in your mouth when you drink wine. The sensor, which uses gold nanoparticles to act as a “mini-mouth”, measures how you experience the sensation of dryness in the wine.

“Squid skin” metamaterials project yields vivid color display

September 16, 2014 7:41 am | by Jade Boyd, Rice Univ. | News | Comments

The quest to create artificial “squid skin”—camouflaging metamaterials that can “see” colors and automatically blend into the background—is one step closer to reality, thanks to a breakthrough color-display technology unveiled by Rice Univ. The new full-color display technology uses aluminum nanoparticles to create the vivid red, blue and green hues found in today’s top-of-the-line LCD televisions and monitors.

Advertisement

“Electronic skin” could improve early breast cancer detection

September 10, 2014 1:09 pm | News | Comments

For detecting cancer, manual breast exams seem low-tech compared to other methods such as MRI. But scientists are now developing an “electronic skin” that “feels” and images small lumps that fingers can miss. Knowing the size and shape of a lump could allow for earlier identification of breast cancer, which could save lives.

Nanotechnology to provide cleaner diesel engines

September 9, 2014 8:32 am | by Bertel Henning Jensen, Technical Univ. of Denmark | News | Comments

When it comes to diesel engine catalysts, which are responsible for cleansing exhaust fumes, platinum has unfortunately proved to be the only viable option. This has resulted in material costs alone accounting for half of the price of a diesel catalyst. Researchers in Denmark say they have developed a new way to manufacture catalysts that may result in a 25% reduction in the use of platinum.

Engineers develop new sensor to detect tiny individual nanoparticles

September 2, 2014 8:51 am | by Tony Fitzpatrick, Washington Univ. in St. Louis | News | Comments

A team of researchers in the U.S. and China have developed a new sensor that can detect and count nanoparticles, at sizes as small as 10 nm, one at a time. The researchers say the sensor, which is a Raman microlaser sensor in a silicon dioxide chip that does not need rare-earth ions to achieve high resolution, could potentially detect much smaller particles, viruses and small molecules.

Immune cells get cancer-fighting boost from nanomaterials

August 14, 2014 9:00 am | by Rase McCry, Yale Univ. | News | Comments

Scientists at Yale Univ. have developed a novel cancer immunotherapy that rapidly grows and enhances a patient’s immune cells outside the body using carbon nanotube-polymer composites; the immune cells can then be injected back into a patient’s blood to boost the immune response or fight cancer.

Nanotech invention improves effectiveness of the “penicillin of cancer”

August 14, 2014 8:01 am | by Jared Sagoff, Argonne National Laboratory | News | Comments

By combining magnetic nanoparticles with one of the most common and effective chemotherapy drugs, Argonne National Laboratory researchers have created a way to deliver anti-cancer drugs directly into the nucleus of cancer cells. They have created nano-sized bubbles, or “micelles,” that contain magnetic nanoparticles of iron oxide and cisplatin, a conventional chemotherapy drug also known as “the penicillin of cancer.”

“Trojan horse” treatment could beat brain tumors

August 13, 2014 12:55 pm | News | Comments

A smart technology which involves smuggling gold nanoparticles into brain cancer cells has proven highly effective in lab-based tests in the U.K. The technique could eventually be used to treat glioblastoma multiforme, which is the most common and aggressive brain tumor in adults, and notoriously difficult to treat.

Eco-friendly pre-fab nanoparticles could advance nanomanufacturing

August 13, 2014 11:21 am | by Janet Lathrop, UMass Amherst | News | Comments

A team of materials chemists, polymer scientists, device physicists and others at the Univ. of Massachusetts Amherst report a breakthrough technique for controlling molecular assembly of nanoparticles over multiple length scales that should allow faster, cheaper, more ecologically friendly manufacture of organic photovoltaics and other electronic devices.

Nanoparticle “alarm clock” may awaken immune systems put to sleep by cancer

July 25, 2014 3:09 pm | News | Comments

Cancerous tumors protect themselves by tricking the immune system into accepting everything as normal, even while cancer cells are dividing and spreading. One pioneering approach to combat this effect is to use nanoparticles to jumpstart the body's ability to fight tumors. Recent combines these therapeutic nanoparticles with heat to stimulate the immune system.

The stability of gold clusters: Every ligand counts

July 22, 2014 8:37 am | News | Comments

By colliding ultra-small gold particles with a surface and analyzing the resulting fragments, a trio of scientists at Pacific Northwest National Laboratory discovered how and why the particles break. This information is important for controlling the synthesis of these tiny building blocks that are of interest to catalysis, energy conversion and storage, and chemical sensing.

Ultrasonically propelled nanorods spin dizzyingly fast

July 22, 2014 8:32 am | News | Comments

Vibrate a solution of rod-shaped metal nanoparticles in water with ultrasound and they'll spin around their long axes like tiny drill bits. Why? No one yet knows exactly. But researchers at the NIST have clocked their speed, and it's fast. At up to 150,000 revolutions per minute, these nanomotors rotate 10 times faster than any nanoscale object submerged in liquid ever reported.

More than glitter

July 21, 2014 10:35 am | by Anne Trafton, MIT News Office | Videos | Comments

A special class of tiny gold particles can easily slip through cell membranes, making them good candidates to deliver drugs directly to target cells. A new study from Massachusetts Institute of Technology materials scientists reveals that these nanoparticles enter cells by taking advantage of a route normally used in vesicle-vesicle fusion, a crucial process that allows signal transmission between neurons. 

Self-assembling nanoparticle could improve MRI cancer scanning

July 16, 2014 8:44 am | News | Comments

Scientists have designed a new self-assembling nanoparticle that targets tumors, to help doctors diagnose cancer earlier. The new nanoparticle, developed by researchers in the U.K., boosts the effectiveness of magnetic resonance imaging scanning by specifically seeking out receptors that are found in cancerous cells.

X
You may login with either your assigned username or your e-mail address.
The password field is case sensitive.
Loading