Articles tagged with Nanoparticles
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.
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.
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 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.
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 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 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.
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.
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.
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.
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.
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 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.
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.
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.
Researchers at NC State University developed a screening tool to predict nanoparticle interactions with biological systems, allowing for improved safety and applications in drug delivery. The study uses molecular probes to create 'fingerprints' identifying how nanoparticles will behave inside the human body.
A team of Hong Kong researchers has demonstrated that burying a layer of silver nanoparticles improves the performance of organic electronic devices. The finding is significant as it suggests a simple and cost-effective way to enhance transistor performance.
Magnetic nanoparticles are injected into tumors to generate heat for cancer treatment. Magnetic relaxometry measures the relaxation of magnetic moments to determine particle quantity, allowing for selective tumor treatment.
A NIST-developed nanofluidic device separates and measures nanoparticles of different sizes, offering a faster and more economical approach to nanoparticle sample preparation. The device's tailored resolution and surface chemistry enable the sorting of complex nanoparticle mixtures.
Researchers at D.J. Sanghvi College of Engineering have investigated various nanotechnology approaches for water purification, including nanofiltration and zeolite filtration membranes. These methods can effectively remove sediments, chemical effluents, charged particles, bacteria, and other pathogens from water.
Researchers have developed a multifunctional nanoparticle that eliminates background noise, enabling precise medical imaging. The technique uses photoacoustic imaging to detect single cells, potentially revolutionizing cancer detection and molecular imaging.
Wake Forest University Baptist Medical Center researchers have developed a new technology using iron-containing Multi-Walled Carbon Nanotubes to treat cancer. The iron-loaded nanoparticles can be tracked in living tissue and destroy tumors when hit with a laser, offering a potential solution to increasing the accuracy of cancer treatment.
Researchers have successfully used iron-containing Multi-Walled Carbon Nanotubes (MWCNTs) to destroy tumors with heat generated by laser therapy. The nanotubes become visible in an MRI scanner, allowing for precise targeting of cancer cells and reducing the risk of harming healthy tissue.
Scientists at Hebrew University have developed a new technology using poplar tree protein to increase computer memory capacity and reduce manufacturing costs. The approach involves combining protein molecules with silica nanoparticles, resulting in a cost-effective system that can greatly expand existing memory capacity.
Researchers used nanoparticles to destroy atherosclerotic plaque in pigs, reducing plaque volume by 56.8% after six months. Combining nanoparticles with adult stem cells showed the greatest reductions in plaque volume and signs of new blood vessel growth.
A team of University of Pittsburgh engineers has designed artificial cells capable of self-organizing, performing tasks, and transporting cargo. The cells interact through nanoparticles and can be controlled to perform specific functions, offering a significant step towards synthetic cells that behave like natural organisms.
Kansas State University researchers have successfully used gene-silencing nanoparticles to kill mosquito larvae and make them more susceptible to pesticides. This technology has the potential to revolutionize insect control, targeting specific pest species while being environmentally friendly.
Researchers developed a model predicting the architecture of nanoparticle ensembles and their properties. The findings could lead to more efficient production of nanostructures with complex architectures.
Researchers at University of Warwick and University of Sheffield used metadynamics to simulate how a chicken eggshell protein binds to calcium carbonate particles, enabling efficient recycling and catalytic activity. The study provides new insights into controlling crystallization in nature.
A new drug delivery system has been developed using nanoparticles embedded in liposomes that can be triggered by non-invasive electromagnetic fields. The system can control the rate and extent of drug release, with a quick release in just 30-40 minutes.
Researchers at University at Buffalo have developed a method to remotely control ion channels, neurons and animal behavior using heated magnetic nanoparticles. The approach could lead to innovative cancer treatments and therapies for neurological disorders.
Researchers found that nanoparticles of zinc oxide are twice as toxic to colon cells as conventional zinc oxide. The study's results suggest that accidental ingestion of sunscreen products could lead to toxicity in humans.
UCI chemists develop synthetic antibodies that block bee venom by encasing melittin, a peptide causing cells to rupture. These 'plastic antibodies' offer a promising alternative to natural antibodies for treating medical conditions, with potential applications in fighting deadly toxins and pathogens.
Researchers have achieved unprecedented spatial and temporal resolution in single-shot images of nanoparticulate catalysts, enabling time-resolved imaging of particles as small as 30 nanometers. This breakthrough could greatly improve catalyst efficiency in various processes crucial to energy security.