As baby boomers age, the number of people diagnosed with Parkinson's disease is expected to increase. Patients who develop this disease usually start experiencing symptoms around age 60 or older. Currently, there's no cure, but scientists are reporting a novel approach that reversed Parkinson's-like symptoms in rats. Their results, published in ACS Nano, could one day lead to a new therapy for human patients.
Soldiers who suffer internal trauma from explosions might one day benefit from a new treatment...
Researchers have demonstrated a promising new way to increase the effectiveness of radiation in...
Our world is full of patterns, from the twist of a DNA molecule to the spiral of the Milky Way....
Therapeutic agents intended to reduce dental plaque and prevent tooth decay are often removed by saliva and the act of swallowing before they can take effect. But a team of researchers has developed a way to keep the drugs from being washed away. Dental plaque is made up of bacteria enmeshed in a sticky matrix of polymers, a polymeric matrix, that is firmly attached to teeth.
Nanoparticles are specifically adapted to the particular application by Small Molecule Surface Modification. Thereby surfaces of work pieces or moldings are expected to exhibit several different functions at one and the same time. Fabricators and processors alike demand consistently high quality for their intermediate and final products. The properties of these goods usually also have to meet specific requirements.
Researchers have shown how to convert waste packing peanuts into high-performance carbon electrodes for rechargeable lithium-ion batteries that outperform conventional graphite electrodes, representing an environmentally friendly approach to reuse the waste.
Acne, a scourge of adolescence, may be about to meet its ultra-high-tech match. By using a combination of ultrasound, gold-covered particles and lasers, researchers from Univ. of California, Santa Barbara and Sebacia have developed a targeted therapy that could potentially lessen the frequency and intensity of breakouts, relieving acne sufferers the discomfort and stress of dealing with severe and recurring pimples.
Materials resulting from chemical bonding of glucosamine, a type of sugar, with fullerenes, kind of nanoparticles known as buckyballs, might help to reduce cell damage and inflammation occurring after stroke. A team from the Max Planck Institute in Germany has tested this on mice, opening the door to potential new drugs for the cerebrovascular accident.
Researchers at Massachusetts Institute of Technology have developed a method to stimulate brain tissue using external magnetic fields and injected magnetic nanoparticles: a technique allowing direct stimulation of neurons, which could be an effective treatment for a variety of neurological diseases, without the need for implants or external connections.
Tiny glass nanospheres coated on one side with a very fine gold film: Ludwig Maximillian Univ. of Munich scientists have shown that particles modified in this way can be moved about with high precision using laser beams, creating an optically controlled micro-elevator.
Chemotherapy often shrinks tumors at first, but as cancer cells become resistant to drug treatment, tumors can grow back. A new nanodevice developed by Massachusetts Institute of Technology researchers can help overcome that by first blocking the gene that confers drug resistance, then launching a new chemotherapy attack against the disarmed tumors.
Researchers have revealed previously unobserved behaviors that show how details of the transfer of heat at the nanoscale cause nanoparticles to change shape in ensembles.
Researchers succeeded in creating an electrocatalyst that is needed for storing electric energy made of carbon and iron. A challenge that comes with the increased use of renewable energy is how to store electric energy. Platinum has traditionally been used as the electrocatalyst in electrolyzers that store electric energy as chemical compounds.
Injectable nanoparticles that could protect an injured person from further damage due to oxidative stress have proven to be astoundingly effective in tests to study their mechanism. A team of scientists designed methods to validate their 2012 discovery that combined polyethylene glycol-hydrophilic carbon clusters could quickly stem the process of overoxidation that can cause damage in the minutes and hours after an injury.
A novel approach to growing nanowires promises a new means of control over their light-emitting and electronic properties. In a recent issue of Nano Letters, scientists from Lawrence Berkeley National Lab demonstrated a new growth technique that uses specially engineered catalysts. These catalysts, which are precursors to growing the nanowires, have given scientists more options than ever in turning the color of light-emitting nanowires.
The lowly roundworm is the star of an ambitious Rice Univ. project to measure the toxicity of nanoparticles. The low-cost, high-output study measures the effects of many types of nanoparticles not only on individual organisms but also on entire populations. The researchers tested 20 types of nanoparticles and determined that five, including the carbon-60 molecules (“buckyballs”) discovered at Rice in 1985, showed little to no toxicity.
It’s technology so advanced that the machine capable of using it doesn’t yet exist. Using two biocompatible parts, Univ. at Buffalo researchers and their colleagues have designed a nanoparticle that can be detected by six medical imaging techniques: computed tomography (CT) scanning, positron emission tomography (PET) scanning, photoacoustic imaging, fluorescence imaging, upconversion imaging and Cerenkov luminescence imaging.
More efficient medical treatments could be developed thanks to a new method for triggering the rearrangement of chemical particles. The new method, developed at the Univ. of Warwick, uses two “parent” nanoparticles that are designed to interact only when in proximity to each other and trigger the release of drug molecules contained within both.
One way of removing harmful nitrate from drinking water is to catalyze its conversion to nitrogen. This process suffers from the drawback that it often produces ammonia. By using palladium nanoparticles as a catalyst, and by carefully controlling their size, this drawback can be eliminated. It was research conducted by Yingnan Zhao of the Univ. of Twente’s MESA+ Institute for Nanotechnology that led to this discovery.
New York Univ. Polytechnic School of Engineering professors have been collaborating with researchers from Peking Univ. on a new test strip that is demonstrating great potential for the early detection of certain heart attacks. The new colloidal gold test strip can test for cardiac troponin I (cTn-I) detection.
Scientists at Oak Ridge National Laboratory are learning how the properties of water molecules on the surface of metal oxides can be used to better control these minerals and use them to make products such as more efficient semiconductors for organic light-emitting diodes and solar cells, safer vehicle glass in fog and frost and more environmentally friendly chemical sensors for industrial applications.
Researchers at North Carolina State Univ. and the Univ. of North Carolina at Chapel Hill have uncovered a novel approach to creating inhalable vaccines using nanoparticles that shows promise for targeting lung-specific diseases, such as influenza, pneumonia and tuberculosis.
Lead sulfide nanocrystals suitable for solar cells have a nearly one-to-one ratio of lead to sulfur atoms, but Massachusetts Institute of Technology (MIT) researchers discovered that to make uniformly sized quantum dots, a higher ratio of lead to sulfur precursors—24 to 1—is better.
Stroke victims could have more time to seek treatment that could reduce harmful effects on the brain, thanks to tiny blobs of gelatin that could deliver the medication to the brain noninvasively. Univ. of Illinois researchers found that gelatin nanoparticles could be laced with medications for delivery to the brain, and that they could extend the treatment window for when a drug could be effective.
Lindsey Vonn. Derrick Rose. Tom Brady. Mickey Mantle. They have all fallen victim to the dreaded pop of the knee. Connecting the femur to the tibia, the anterior cruciate ligament (ACL) rupture is one of the most devastating injuries in sports. No other injury has sidelined more athletes for a season or even the rest of a career.
In one of the most comprehensive laboratory studies of its kind, Rice Univ. scientists traced the uptake and accumulation of quantum dot nanoparticles from water to plant roots, plant leaves and leaf-eating caterpillars. The study found that nanoparticle accumulation in both plants and animals varied significantly depending upon the type of surface coating applied to the particles.
An anomaly spotted at the Large Hadron Collider has prompted scientists to reconsider a mathematical description of the underlying physics. By considering two forces that are distinct in everyday life but unified under extreme conditions like those within the collider and just after the birth of the universe, they have simplified one description of the interactions of elementary particles.
Scientists have shown how advanced computer simulations can be used to design new composite materials. Nanocomposites, which are widely used in industry, are revolutionary materials in which microscopic particles are dispersed through plastics.
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