Articles tagged with Nanoparticles
A new study reveals that alumina nanoparticles enhance biodiesel combustion, increasing fuel efficiency while decreasing nitrogen oxide and carbon monoxide emissions. Researchers are now exploring other types of nanoparticles for potential engine lubrication and cooling systems.
A new study reveals that exposure to vehicle pollution can cause significant brain damage in mice, including signs of memory loss and Alzheimer's disease. The tiny particles from burning fossil fuels and weathered car parts are too small for filters to trap, raising concerns about human health.
Researchers at Queen's University discovered that silver nanoparticles can be highly toxic to microbial communities in Arctic soil, compromising the ecosystem's ability to fix nitrogen. The study's findings highlight the need for further consideration of innovation's impact on the environment.
Researchers have mixed nanoparticles into heat-transfer oils to increase the efficiency of solar collectors. This could lead to significant revenue gains for solar power plants. The use of nanoparticles also has potential applications in filtering out pollutants from coal power plants.
Scientists at Brigham and Women's Hospital have developed nanoparticles containing calcium that can capture nickel efficiently without penetrating the skin. This breakthrough could provide a new strategy for preventing nickel-induced contact dermatitis, affecting millions worldwide.
Researchers have developed nanoparticles loaded with siRNA to silence cancer-promoting genes in ovarian cancer, selectively shrinking or destroying tumors. The nanoparticles use high-density lipoprotein (HDL) as a delivery vehicle, which is taken up by cancer cells and not healthy tissue.
Researchers at North Carolina State University have successfully created ordered layers of nanoparticles using spincasting, a technique that utilizes centrifugal force to distribute liquids onto solid substrates. This approach has promising results for the creation of materials with various uses, from optics to electronics.
Researchers have created an organic nanoparticle that uses sound and heat to target tumors, offering a promising new approach to cancer treatment. The nanoparticle's ability to absorb light and accumulate in tumors makes it ideal for photothermal therapy.
Researchers at North Carolina State University have developed a new method for creating uniform carbon nanofibers, which could enable precise scientific measurement tools and medical imaging devices. The technique uses nickel nanoparticles coated with ligand shells to grow carbon nanofibers of specific sizes.
Researchers developed a new 3D printing method that enables the creation of electrically small antennas with improved performance metrics. The technique uses metallic nanoparticle inks and can be applied to various surfaces, including hemispherical substrates.
The new instrument, developed at UCSB, can detect nanoparticles in fluid at rates of up to half a million particles per second. It measures the volume of each nanoparticle for rapid and precise size analysis of complex mixtures.
Researchers have discovered that the coating of nanoparticle surfaces significantly influences immune activation, allowing for more targeted treatment of diseases. The study shows that designing polymers in various ways can drastically change the body's immune response.
Scientists at Emory Vaccine Center developed nanoparticles that mimic viruses to induce lifelong immunity in mice. The particles, made of biodegradable polymers, activate two different parts of the innate immune system and can be used with material from various bacteria or viruses.
McGill researchers develop a cheap, portable paper-based filter to produce clean drinking water in emergency situations. The filter, coated with silver nanoparticles, is able to kill nearly all bacteria and produce water that meets EPA standards.
Researchers Marta Rossell and Rolf Erni developed a new technique to study the 3D structure of nanoparticles, enabling the determination of their atomic arrangement. This breakthrough could improve understanding of nanoparticle properties, reactivity, and toxicity.
Scientists have designed a new type of nanoparticle that can deliver synthetic versions of proteins normally produced by viruses, eliciting a strong immune response comparable to live virus vaccines. The nanoparticles consist of concentric fatty spheres that can be used to develop vaccines against cancer and infectious diseases.
Researchers at Albert Einstein College of Medicine have developed nanoparticles containing nitric oxide that improve survival after life-threatening blood loss in hamsters. The therapy maintains blood circulation and protects vital organs by increasing levels of NO gas, which relaxes blood vessels and regulates blood pressure.
Researchers designed nanoparticles by engineering the support structure, exposing stable crystal faces for enhanced selectivity and yield in catalytic reactions. The discovery could lead to better catalysts with a significant impact.
The European Commission Joint Research Centre has developed the world's first certified reference material for nanoparticle size analysis. The material provides a stable benchmark for reliable hazard assessments and process quality control, promoting market confidence and innovation.
Scientists have developed a new food packaging material called 'killer paper' with silver nanoparticles that fights bacteria causing spoilage. The coating is effective against E. coli and S. aureus, killing bacteria in just three hours.
Researchers found excessive calcification of fetal membranes may lead to preterm premature rupture of the membranes (PPROM) and preterm birth. Lower fetuin levels in amniotic fluid were linked to women at risk of PPROM.
Researchers at the University of California - Davis have developed a new approach to solar cells by constructing them from extremely small nanoparticles. The team aims to achieve an efficiency of 42-65%, surpassing the current theoretical maximum of 31%.
Researchers at NIST developed a method to produce nanoparticle clusters in controlled sizes, stable over time. The study found that larger clusters may be less toxic to human cells due to slower dissolution rates.
New nanoparticles designed to target fibrin in blood clots can be seen with a new type of CT scanner, providing early detection and potential treatment options for heart attacks. This technology has the potential to save lives by quickly identifying unstable plaque and guiding targeted treatments.
Magnetic nanoparticles can detect cervical cancer by trapping antibodies, offering earlier screening and treatment. Similarly, these nanoparticles can detect E. coli infections at lower bacterial cell counts, halting disease spread faster.
Researchers have shown that nanosilver is not a new discovery but has been used for over 100 years to prevent bacterial growth. Nanoparticles have different properties than larger particles, making them more reactive and toxic to bacteria.
Scientists have developed a new material consisting of copper-coated silica nanoparticles that can eliminate unpleasant odors. These nanoparticles are up to twice as effective as the current gold standard, activated carbon, in removing foul-smelling substances like ethyl mercaptan.
Researchers at Georgia Tech have developed a new treatment system that uses magnetic nanoparticles to capture free-floating cancer cells, slowing tumor progression in humans. The system aims to reduce chemotherapy side effects by removing the primary source of metastasis.
Massachusetts General Hospital researchers developed nanoparticles containing keratinocyte growth factor that accelerate wound healing in diabetic mice. The fusion protein retained wound-healing properties and efficiently delivered growth factors to deeper tissues.
Researchers at Purdue University have developed a tiny slide-sized model of the female breast, dubbed 'breast on-a-chip,' to test nanomedical approaches for detecting and treating breast cancer. The model mimics the branching mammary duct system where most cancers begin.
Scientists have developed a method to create stable three-dimensional RNA nanoparticles by modifying their chemical structure, making them resistant to RNase degradation. This breakthrough has significant implications for the use of RNA in nanotechnology applications, including targeted therapies for cancer and viral infections.
Scientists have developed a new food packaging material that uses silver nanoparticles to fight bacteria and extend shelf life. The material has been shown to be effective against E. coli and S. aureus, two common causes of bacterial food poisoning.
Researchers at the University of Central Florida have developed a technique to detect cholera toxin using a complex sugar and nanoparticles. The method could provide faster and less expensive results than current detection methods, enabling relief workers to restrict access to contaminated sources.
Researchers have developed nanoparticles that deliver the cancer drug cisplatin more effectively and safely, reducing its potentially severe side effects. The new particles successfully shrink tumors in mice using only one-third of the conventional dose.
Researchers have created a new type of nanoparticle called nanodisks, which can carry genetic material and enter cells quickly without losing its potency. These nanodisks offer a promising alternative to traditional gene therapy vectors, potentially improving therapeutic outcomes.
A study by the University of Kentucky found that earthworms can absorb copper nanoparticles present in soil, raising concerns about potential exposure to humans and animals. The research has significant implications for understanding the interactions of nanomaterials in the environment.
A Purdue University research team developed a nanoparticle that can hold and release an antimicrobial agent, preserving its effectiveness against Listeria monocytogenes for up to three weeks. The nanoparticle attracts and stabilizes nisin, a food-based antimicrobial peptide, allowing for extended use in foods susceptible to Listeria.
Scientists in Mexico and the US have synthesized gold and silver nanoparticles just 25 nanometers in diameter, which could have potential applications as catalysts, drug-delivery agents, and quantum dots. The analysis reveals multiple layers of shells within each particle, with some blending or alloying of metals.
Researchers have developed a new method to target and destroy cancerous cells using hyperthermia, which elevates the temperature of tumor cells while keeping surrounding healthy tissue at a lower degree of body heat. The technique uses ferrofluids to induce hyperthermia and has been shown to be biocompatible with iron oxide nanoparticles.
Virginia Tech researchers have developed a promising new cancer treatment using magnetic fluid hyperthermia, which heats up magnetic nanoparticles to kill tumor cells. The treatment has shown no adverse effects on surrounding healthy tissue.
A University of Edinburgh study reveals that nanoparticles used in various products can cause distinct lung injuries in rats, with some triggering asthmatic reactions and others leading to severe damage. Researchers emphasize the need for improved testing methods to assess nanoparticle risks.
A recent study by Dr. Nan Yao and his team found that carbon nanotubes induced programmed cell death in plant cells, with the effect being dosage-dependent. The researchers discovered that only single-wall carbon nanotubes caused cell damage, while other types of particles did not.
Researchers propose a novel approach to prevent both unintended pregnancies and HIV transmission by utilizing nanoparticles that carry melittin, a toxin derived from honeybee venom. The nanobees will target and destroy sperm and HIV cells through a fusion process.
Researchers used a novel imaging system to track the movement of near-infrared fluorescent nanoparticles from the lungs into the body and out again. The study found that non-positively charged nanoparticles smaller than 34nm in diameter appeared in lung-draining lymph nodes within 30 minutes.
Researchers have developed a method to control drug delivery using nanoparticles, which can improve the therapeutic effects of colon cancer treatments. The new approach targets the lower intestine, overcoming existing barriers such as stomach acidity and rapid clearance.
Researchers at Oregon State University have developed a new method to produce nanoparticles 500 times faster than traditional methods, using an arrayed microchannel reactor and laminated architecture. This breakthrough could make nanotechnology products more commercially practical and environmentally friendly.
Scientists developed a new approach to eliminating unpleasant odors using nanoparticles coated with copper, which are hundreds of times smaller than peach fuzz. These particles show promise for removing sulfur contaminants and harmful bacteria.
Duke University researchers discovered that smaller catalyst particle size is crucial for improving efficiency in chemical reactions. The team found that the surface-to-volume ratio of the catalyst particle is more important than previously thought, leading to faster reactions.
Researchers at Rice University are testing a nanoparticle designed to diagnose and treat pancreatic cancer, which is notoriously difficult to treat with a five-year preclinical testing program funded by the National Cancer Institute.
Researchers at Carnegie Institution for Science have successfully watched nanoparticles grow from the earliest stages of formation using high-energy X-rays. This breakthrough allows for the development of new techniques to control growth conditions, paving the way for improved solar-cell technology and chemical sensors.
A novel approach to delivering small bits of genetic material into the body has been developed by researchers at Georgia Institute of Technology and Emory University. The thioketal nanoparticles successfully targeted inflamed intestinal tissues, reducing inflammation and promoting healing.
Scientists from Oregon State University and the European Union outline six regulatory issues for nanoparticles in pesticides, including disclosure and testing methods. The researchers aim to design safer nanoparticles that maximize benefits while preventing risks.
Researchers at WUSTL will explore therapies and diagnostic tools for heart and lung diseases using nanotechnology. The project aims to improve treatment options for cystic fibrosis, acute lung inflammation, and atherosclerosis.
Researchers have successfully slipped silver nanoparticles cloaked in HIV protein into the nucleus of cells, where they can detect subtle light signals and deliver payloads. This innovation has potential implications for disease treatment and basic scientific research.
Researchers have developed a method for creating novel metal films using ultrashort laser ablation, which allows for precise control over nanoparticle structures. This technique has potential applications in fields such as surface-enhanced Raman spectroscopy and the growth of carbon nanotubes.
Researchers have discovered a new type of nanoparticle shaped like the Star of David, which may lead to new ways for sensing glucose in diagnosing diabetes. The nano-cages also showed promise as sensors for hydrogen peroxide detection, boosting electrical signals by 200 fold.
Researchers at NIST have developed a simple process for producing nanocrystals that enable studies of physical and chemical properties affecting nanoparticle interaction. The process allows precise control over size, shape and composition, creating perfect-edged nanocubes with uniform size.
Scientists have discovered that giant nanoparticles are sticking together in a vacuum chamber, causing stress and roughness in thin films. This finding has large implications for industries such as optics and materials science.
A Syracuse University research team has discovered a method to accelerate algae growth by manipulating light particles through nanobiotechnology. This process can enhance photosynthesis and lead to increased productivity in harvesting the feedstock for biodiesel production, while also reducing ecological resources required.
Researchers at Tufts University develop nanoparticles to deliver therapeutic genes to the retina, delaying onset of eye disease and preserving vision. The treatment, using a gene for GDNF, shows temporary but significant protection against photoreceptor cell death.