Articles tagged with Nanoparticles
A new study investigates the potential toxicity of nanoparticles on human immune cells, finding that eosinophils respond to nanoparticle contact. The research aims to establish standards for worker protection and regulation of nanoparticle use.
Researchers at Brigham and Women's Hospital have successfully developed nanoparticles that can be absorbed through the digestive tract, enabling targeted and convenient drug delivery. This breakthrough could one day allow patients to take a pill instead of receiving injections for conditions such as cancer and high cholesterol.
Researchers have developed nanoparticles that can be delivered orally and absorbed through the digestive tract, allowing patients to take a pill instead of receiving injections. The particles are coated with antibodies that act as a key to unlock receptors found on cells lining the intestine.
Scientists have created a new class of nano-mechanical oscillators that are ultra-sensitive to forces, including non-Newtonian gravity-like forces and quantum vacuum fluctuations. The system uses optically levitated nanoparticles in high vacuum conditions, overcoming the limitation of physical contact to a support.
A new technique uses nanoparticles and ultrasound to regulate blood sugar levels in diabetics, potentially eliminating the need for insulin injections. The method involves injecting biocompatible nanoparticles into the skin, which are then activated by a small ultrasound device to release insulin painlessly.
Kytai Nguyen, associate bioengineering professor at UT Arlington, has been elected as a fellow of the American Heart Association. Her research focuses on cellular engineering, tissue engineering, and stem cell therapies to develop new strategies for combating cardiovascular diseases.
Scientists at Oxford University have developed a technique using nanoparticles to investigate the mechanisms underlying 'mystery' cases of infertility. The method involves loading porous silica nanoparticle envelopes with compounds to identify or treat causes of infertility, demonstrating no detrimental effects on sperm function.
Researchers discovered that electrons in cerium dioxide nanoparticles behave like a cloud, distributing themselves over the entire nanoparticle. This finding challenges the traditional model of electron behavior and opens up new avenues for research on nanomaterials.
The Center for Environmental Implications of NanoTechnology (CEINT) at Duke University has been awarded a $15 million grant renewal to continue studying the environmental impact of nanoparticles. The research focuses on understanding where nanoparticles accumulate, how they interact with other chemicals, and their effects on ecosystems.
Research team develops co-assembly approach to create complex nanostructures with preprogrammed properties. The nanoparticles, resembling caterpillar larva, can be designed with specific functions and stimuli responsiveness.
Researchers used electron microscopy techniques to study metallic nanoparticles' reaction with environment, finding oxidation occurs much faster due to strain introduced by size. The discovery improves understanding of nanoparticles' applications in clean fuel technologies, data storage, and catalysis.
Case Western Reserve University researchers aim to develop processes that can be used by industry to manufacture Janus particles, which could carry paired medicines or provide unique optics for displays. The engineers focus on creating high-yield nanomanufacturing with simple processes.
The Nanotechnology Consumer Product Inventory has been restructured to improve its functionality and scientific credibility. The database now includes qualitative and quantitative descriptors for nanomaterials and their potential exposure routes, enabling better understanding of the risks associated with consumer products.
Researchers have discovered a way to kinetically trap liquids within each other, creating stable systems that can be tailored to specific shapes and flow characteristics. This breakthrough holds promise for applications such as drug delivery, fluidics, and energy storage.
Researchers at the UPV/EHU and Tecnalia have developed an innovative method using iron nanoparticles to degrade lindane, a toxic insecticide banned by farmers. The study confirms the high reactive capacity of iron nanoparticles to break down lindane, revealing reaction tendencies and speeds over time.
A new research project will develop the next generation of effective mucosal vaccines using immunomodulation and cell-targeted nanoparticles. This innovation aims to improve vaccine administration in resource-poor settings, reducing blood-borne contamination and pandemic spread risks.
Researchers discovered that mammalian cells prefer disc-shaped nanoparticles over rod-shaped ones under typical culture conditions. The study's findings could help design better therapies for various diseases by understanding how nanoparticle shape affects transport into cells.
Researchers have developed nanoparticles that can protect vaccines from being cleared by the lungs, allowing them to generate a strong immune response in both the lungs and distant mucosal surfaces. The technology has shown promise in preventing infections such as influenza and HIV, as well as delivering cancer vaccines.
Scientists at Brookhaven National Laboratory have created a high-performing nanocatalyst that transforms impure hydrogen into electricity, addressing challenges of carbon monoxide poisoning. The novel core-shell structure, combining ruthenium and platinum, exhibits perfect atomic ordering and superior performance parameters.
UCLA researchers have created a portable smartphone attachment that can detect single viruses, bacteria, and nanoparticles using a cellphone-based imaging platform. The device weighs less than half a pound and can be used for sensitive detection of sub-wavelength objects in field settings.
Using an airbrush, researchers can grow vertically aligned carbon nanofibers on several metal substrates, opening the door for incorporating these nanofibers into gene delivery devices, sensors, batteries and other technologies. The technique enables large-scale manufacturing processes, making it suitable for various applications.
Scientists present innovative approaches to reduce hazardous substances in production processes, using renewable materials and minimizing waste. The symposium features topics such as banana-peel powder removal of toxic metals from water and sustainable nanoparticle production.
Scientists at Queen Mary University of London discovered a novel nanoparticle with magnetic properties, revealing potential applications in battery technology and cancer therapies. The sea urchin-shaped nanoparticles consist of iron-filled nanotubes with unique properties that can be manipulated for various uses.
Researchers discover STING's critical role in treating autoimmune diseases by evoking expression of enzyme IDO, which blocks immune attack on healthy body constituents. Mice with STING deficiency had no response to DNA nanoparticles, highlighting the protein's essential role in recognizing the molecule that senses DNA.
Researchers aim to turn CO2 from fossil fuels back into a renewable energy source by capturing and processing the gas with catalysts. A symposium at the American Chemical Society meeting features studies on the activation of CO2 for catalytic transformation.
Scientists developed a solar steam technology that sterilizes medical and dental instruments, disinfects human waste, and purifies dirty water. The device uses sunlight to generate steam, eliminating the need for electricity or fuel.
Scientists at Xiamen University and the University of Jyväskylä have successfully synthesized stable metal nanoclusters containing 44 metal atoms. The unique electronic structure of these clusters enables peaked absorption in a wide region of ultraviolet and visible parts of the electromagnetic spectrum. This breakthrough has significa...
The discovery enables rapid localization and measurement of cells within living environments at the nanoscale, such as changes to a single cell in response to chemical signals. The ultra-sensitive nanoparticles, or SuperDots, can detect individual particles with thousand times more sensitivity than existing materials.
Researchers at the University of Alberta have developed a new method for creating inexpensive and easily manufactured nanoparticle-based solar cells using phosphorus and zinc. The team's innovative approach could make solar power more accessible to off-grid communities and reduce costs by up to half.
Researchers at the University of Missouri have developed a reliable method for detecting silver nanoparticles in fresh produce and other food products. The study found that smaller particles can penetrate skin and reach sensitive sites after digestion, posing a potential health risk to consumers.
Researchers at Umeå University created graphene nanoscrolls with high efficiency by decorating iron oxide nanoparticles. The material shows promising properties as electrodes in Li-ion batteries due to its magnetic interaction and nitrogen defects.
Researchers at UGA are developing a new treatment technique that uses nanoparticles to stimulate the immune system against breast cancer cells. By targeting mitochondria and activating dendritic cells, they can produce high levels of chemical signals that alert the immune system to attack cancer cells.
Researchers at Syracuse University have developed a novel method for synthesizing alloy nanomaterials with stainless steel-like interfaces. This breakthrough may enable the creation of diverse forms of alloy nanomaterials for various applications, including gas storage and heterogeneous catalysis.
Researchers at McGill University have discovered a method to join nanoparticles together using ultrasound, forming strong agglomerates without changing their useful properties. This discovery could lead to the development of new hybrid materials with various everyday applications, such as improving catalytic converters in car exhausts.
A team of MIT researchers investigated the factors controlling boiling heat transfer from a surface to a liquid, finding that surface porosity is the most important factor. They developed methodologies for systematically depositing nanoparticles onto surfaces with controlled wettability and porosity, leading to improvements in heat-tra...
Researchers at Sanford-Burnham Medical Research Institute have developed nanoparticles that can deliver small interfering RNA molecules to specific cells, effectively silencing malfunctioning genes. The approach points toward new ways to treat diseases such as cancer and heart disease by using RNA interference.
Researchers at Brown University have developed a bioadhesive coating that significantly increases the intestinal uptake of polymer nanoparticles in rats. The coating enhances the distribution of particles to specific tissues around the body, suggesting potential for targeted oral drug delivery.
Scientists have developed a new method to discern molecular handedness using tiny nanocubes, which could improve drug development and optical sensors. The approach amplifies the difference in response to light between left- and right-handed molecules.
Researchers reviewed existing studies on nanoparticle toxicity and found that ingestion is unlikely to cause health problems at typical exposure levels. However, the literature lacks evidence on long-term effects or subtle alterations in gut microbial populations.
A new study from MIT sheds light on the nanoparticles' fate, suggesting ways to maximize delivery of short interfering RNA (siRNA) for gene silencing. The researchers found that a protein called Niemann Pick type C1 (NPC1) is crucial for nanoparticle recycling, and disabling it can increase siRNA delivery efficiency.
Researchers use silver-based nanoprobes that reflect distinct optical fingerprints when light is shined on infected samples, detecting specific genetic materials taken from human samples. This technique has the potential to provide fast and reliable information about patients at the point of care.
A new discovery by Penn State researchers may lead to the creation of cheaper clean-energy technologies. The team, led by Raymond Schaak, has found that a nickel phosphide nanoparticle can effectively trigger hydrogen production from water. This process is crucial for many energy-production technologies, including fuel cells and solar ...
Scientists have created a general strategy for making a wide range of nanoparticles in different size ranges, compositions and architectures. The new technique uses star-shaped block co-polymer structures as 'nanoreactors' to control the size and uniformity of colloidal nanocrystals.
A study found that rod-shaped nanoparticles adhere effectively to endothelial cells, enhancing drug delivery. Researchers believe this technology holds promise for novel targeted therapies with fewer side effects.
Srikanth Singamaneni aims to create novel biosensors using self-assembled metal nanoparticles with artificial antibodies, improving specificity and sensitivity. He also plans to educate high-school science teachers and develop a nanotechnology kit for students.
Researchers have developed a new gene delivery method using magnetically targeted nanoparticles that can effectively deliver genes to injured arteries without causing side effects. The technique, which uses stents as a platform for magnetic guidance, shows promise in overcoming current limitations of gene therapy vectors.
Researchers harness advanced atomic force microscopy to track nanomedicine effects on patients, revealing potential benefits in drug delivery and safety. The technique helps identify nanoparticle accumulation and tissue stiffness, offering insights into nanotoxicology and its impact on patient health.
Scientists have designed nanoparticles that can flip from a sphere to a net-like structure in response to tumor signals, accumulating at the site of cancer. This new approach aims to target treatments specifically to diseased cells, overcoming current limitations.
Researchers create nanoparticles using natural lipids derived from grapefruit, which can transport therapeutic agents to specific cells without causing adverse effects. The technology has been validated in a Phase 1 clinical trial for colon cancer patients and may be applied to treat inflammation-related autoimmune diseases.
Researchers at NIST create three-dimensional scaffolds made with cells and hydrogels to evaluate the biological effects of nanoparticles. The hydrogel-based scaffolds provide a more realistic environment than current laboratory tests, allowing for longer-term studies and better representation of normal exposure levels.
Researchers at the University of Pittsburgh have demonstrated nanoscale alloys that emit bright near-infrared light, which could be used for cancer detection and treatment. The findings have the potential to lead to new applications in health and energy fields.
Researchers have developed a new technique to improve the use of nanoparticles as a drug delivery system. The study found that smaller particles degrade faster in the body than predicted by in vitro measurements. By understanding this degradation, a mathematical model can be developed to optimize nanoparticle-based therapeutic systems.
University of Illinois researchers created a novel approach to produce highly uniform Pt icosahedral nanocrystals using the hot injection-assisted GRAILS method. The synthesis results in high-purity products with ideal models for studying structure-property relationships.
A national study on nanomaterial toxicity has provided comparable health risk data, enabling regulators to develop policies to protect workers and consumers. The researchers found that carbon nanotubes caused inflammation in the lower regions of the lung, but made them less hazardous by modifying their structure.
A team of researchers has developed a novel material that enhances light absorption in polymer solar cells, increasing their efficiency. The material, Ag@SiO2 nanoparticles, is solution-processable and customizable on the molecular level, offering promising advantages over traditional silicon-based devices.
Berkeley Lab researchers have developed a new set of metrics for analyzing data acquired via small angle scattering (SAS) experiments with X-rays or neutrons. The new metrics reduce the time required to collect data by up to 20 times, enabling accurate high-throughput and objective analyses of flexible molecular machines that control c...
A novel gene therapy approach using nanoparticles to deliver GDNF may halt Parkinson's disease progression and reverse symptoms. This non-invasive method bypasses the blood-brain barrier, enabling continuous production of GDNF in brain cells.
Dr. Susan E. Clare's research aims to deliver chemotherapy directly to brain metastases using immune cells and nanoparticles, targeting HER2 positive and triple negative breast cancers. The system uses nanoshells coated with gold to release drugs at will in the appropriate spot in the brain.
Scientists have developed GUMBOS-based materials with targeted properties for medical use, such as selectively toxic to cancer cells and non-toxic to normal cells. The technology also has potential uses in solar cells and biomedical imaging.
Controlling the shape of nanometer-sized catalytic particles is crucial for optimizing their activity and selectivity in applications such as catalytic converters, fuel cells, and chemical catalysis. Surface diffusion plays a key role in defining these shapes. The research found that varying temperature and deposition rate can control ...