Articles tagged with Polymers
Researchers have developed techniques to permanently bind antibacterial coatings to medical devices, aiming to prevent the formation of biofilms that can cause infection. The new coatings use a plasma polymer layer and novel diterpene compounds derived from Australian plants to effectively target bacteria.
Scientists at Kyoto University have developed a new method to study polymers in confined spaces, revealing unexpected thermal transitions and potential breakthroughs in nanoscale manufacturing. The technique uses porous coordination polymers to trap polymers, allowing researchers to observe their behavior under controlled conditions.
Rensselaer Polytechnic Institute professors Jonathan Dordick and Leonard Interrante have been named ACS Fellows for their groundbreaking work in biocatalysis, bioengineering, nanobiotechnology, and materials science. Their discoveries have the potential to protect thousands of people from bacterial infections and transform the modern d...
The CREATE study demonstrated satisfactory angiographic and clinical outcomes for biodegradable polymer-based sirolimus eluting stents. The use of these stents with a recommended antiplatelet regimen resulted in a low rate of major adverse cardiac events and stent thrombosis.
A new drug-eluting stent design demonstrated superiority over a traditional drug-eluting stent at 6 months, according to a study led by Laura Mauri, MD. The bioresorbable polymer and stent design showed better clinical outcomes and reduced stent thrombosis risk without compromising anti-restenotic efficacy.
The LEADERS trial shows a biolimus A9-eluting stent with biodegradable polymer is non-inferior to a sirolimus-eluting stent with durable polymer in terms of safety and efficacy at 3 years. Researchers found that both stents have equivalent rates of target lesion revascularization, cardiac death, myocardial infarction, and clinically in...
A team of researchers at Duke and Stanford have found a polymer molecule that can trigger a chemical reaction when stretched, enabling it to build its own repairs. The molecule, called a gem-difluorocyclopropane (gDFC), snaps back smaller than before after stretching, potentially leading to the development of self-healing materials.
University of Houston chemists Rigoberto Advincula and Mamie Moy received ACS Fellowships, recognizing their outstanding contributions to science and the chemistry profession. Their research focuses on polymer and nanomaterials, with potential applications in chemical sensors, energy transfer, and more.
A theoretical model compares the transport characteristics of straight- and branched-chain polymers in channels, shedding light on how deformability affects their movement. The findings could aid in developing carrier molecules for targeted drug delivery.
Researchers at Northwestern University found a universal law for material evolution, allowing them to predict the dynamics of phase break-up in various materials. The study used 4-D synchrotron-based X-ray tomographic microscopy to observe the evolution of rod-shaped phases during the break-up process.
Researchers at Rice University have developed a theoretical method to calculate the time it takes for long-chain polymers to translocate through nanopore geometries, shedding new light on their transport. The study found that polymers pass more quickly when entering a composite pore through its wide end.
Researchers improved a theoretical model for polymer movement through nanopores, addressing the motion of polymers inside pores and introducing significant increases in total time in the pore. This improvement has potential technological applications in DNA sequencing and biosensors.
A team of researchers at Boston College has developed a biosensor using carbon nanotubes that can detect minute amounts of proteins with high sensitivity. The sensor can distinguish between different varieties of the same protein and could potentially be used to diagnose diseases such as human papillomavirus.
A breakthrough discovery has explained why some fluids containing polymers form beads when stretched, providing a key for improving diverse industries such as ink-jet printing and drug dispensing. The study's findings highlight the importance of fluid inertia and relaxation time in bead formation.
Engineers at Purdue University, MIT, and Rice University have discovered the mechanism behind bead formation in fluids containing polymers. They found that fluid inertia, viscosity, relaxation time, and capillary time play crucial roles in controlling bead formation.
Researchers develop micromasonry technique to assemble artificial tissues by encapsulating living cells in cubes and arranging them in 3-D structures. The method holds potential for building artificial tissue or medical devices with controlled microarchitecture.
A team of researchers at NIST developed methods to accurately measure the length of nanopores, which could enable rapid DNA analysis. They created 'molecular rulers' using exotic techniques, including a molecular-scale version of ice fishing, to calibrate tailor-made nanopores.
Researchers at UCLA have created a novel desalination membrane that resists clogging, allowing for lower energy demands and increased lifespan. The membrane's surface topography and chemistry enable it to repel impurities, making it suitable for various water sources.
Researchers at the University of Southampton are exploring the use of patient-derived stem cells to mend damaged hips. The study aims to improve outcomes for revision hip replacement therapy, a procedure where surgeons introduce donor bone to provide support for the new hip stem.
Researchers at Georgia Institute of Technology found that small molecules could act as 'molecular midwives' to help polymers form and select base pairs in DNA. They discovered ethidium assists short oligonucleotides in forming long polymers and can also select the structure of base pairs.
Researchers created a self-healing polymer that can extend the lifetime of automotive oils. The 'starfish' polymer, designed by Professor David Haddleton's team, helps maintain engine efficiency and resists mechanical and thermal stress.
The journal joins Springer's Chinese Library of Science, a collection of high-quality English-language research journals from China. CJPS reflects the new achievements obtained in various laboratories in China and includes papers submitted by scientists from the international community.
Researchers developed sugar-coated polymer strands that selectively kill off cells involved in triggering aggressive allergy and asthma attacks. The treatment targets specific immune cells, showing promise as a new weapon against life-endangering conditions.
Researchers at Caltech have developed a fluid-dynamical model that reveals nanopillars form through thermocapillary flow, not pressure fluctuations. This discovery paves the way for a new 3D lithography method with high precision and potentially limitless patterns.
Researchers at Brookhaven National Laboratory identified an enzyme responsible for suberin production, which can help control water and nutrient transportation in plants. This discovery may lead to easier agricultural production of crops used for biofuels, enabling them to thrive in specific or harsh environments.
High-resolution 3D images of polymer solar cells reveal new insights into their nanoscale structure and effect on performance. Researchers shed light on operational principles, highlighting potential for cost-effective, flexible, and lightweight technology.
Researchers at NIST have advanced understanding of organic films in solar cells, revealing ways to control their formation and optimize performance. By changing electrode surface properties, they reduced barriers between polymers and fullerenes, improving photocurrent and reducing accumulation of fullerenes.
Researchers at Kansas State University are using an atomic force microscope to study proteins and molecules, which could lead to better diagnostic tools for diseases like cancer. By stretching and measuring tiny displacements in protein molecules, scientists hope to gain a deeper understanding of the causes of diseases.
Researchers at UW-Madison identified a unique process for building structural carbohydrates in tuberculosis bacteria, offering insight into controlling carbohydrate polymers' length. This discovery may lead to developing new therapeutics against TB and has broader applications in designing vaccines and producing fuels.
Researchers found that molecular bonds don't always break faster when pulled, contradicting the intuitive notion of rubber bands. The sulfur-sulfur bond's fragmentation rate depends on nearby atom movement and protein structure changes.
Vanderbilt physicists have developed a method to create freestanding nanoparticle films without additives, revolutionizing semiconductor fabrication and flexible display technology. The films exhibit high cohesion and resistance to cracking, making them ideal for applications in transistors and flat panel screens.
Scientists have created a microcontainer that can hold thousands of individual 'carrier units' - a 'capsosome'. These are polymer capsules with embedded liposomes, combining the advantages of both systems. The capsosomes were produced by several steps and demonstrated successful transport of an enzyme model cargo.
University of Illinois researchers create force-sensitive polymers that respond to mechanical stress by changing color, allowing for self-sensing and self-reinforcing properties. The polymers use mechanophores to trigger chemical reactions, enabling a range of applications in materials science and engineering.
Scientists have produced amphiphilic hybrid particles consisting of water-insoluble inorganic nanoparticles at the core surrounded by bristle-like layers of hydrophilic polymer chains. The nature of these aggregates depends on the density of polymer
Blacksburg, VA-based Louis A. Madsen will focus on revealing new aspects of charged polymers in water purification and fuel cells through detailed analysis and computer modeling techniques. His project aims to improve the performance of advanced polymers for sustainable energy production and distribution.
A team of scientists at NIST discovered that temperature can influence the competing processes of crystallization and dewetting in polymer films. This understanding could lead to better control of these processes, resulting in more stable and uniform films for applications like organic solar cells. The research also has implications fo...
SMU chemist Brent Sumerlin has received a $475,000 NSF Faculty Early Career Development Award for two related nanotechnology research projects. His work focuses on developing novel materials with composite properties, including automatic insulin release technology for diabetics and self-repairing coatings for airplane wings.
Researchers at Berkeley Lab have created ceramics that mimic mother of pearl, outperforming human-synthesized composites by 300 times in terms of toughness. The materials use a combination of alumina and polymer to dissipate strain energy and achieve remarkable strength and resistance to fracture.
Scientists have reproduced the protein responsible for mussel adhesion in a synthetic material, showing that adhesion is independent of link number. The findings could lead to manufacturing polymers with binding sites for different materials.
Kumacheva has been recognized for her innovative research in designing new materials with applications in cancer treatments and optical data storage. Her work involves creating polymer particles that deliver drugs to specific diseased sites on demand.
Researchers have developed polymer patches that can ferry drugs, assist in cancer diagnosis and help with tissue engineering. The polymer backpacks allow researchers to use cells as vectors to carry materials to tumors or other tissue sites.
The 12-month ATLANTA Trial data showed zero percent stent thrombosis in patients discontinuing dual anti-platelet therapy after 30 days. The CATANIA stent's Polyzene-F surface treatment promoted healthy endothelial cell growth and reduced platelet activation, leading to improved safety and economic benefits.
Researchers found an unexpected increase in squeeze flow of thin films when film thickness was smaller than 100 nanometers. This phenomenon occurs due to changes in molecular entanglement and polymer chain interaction at the nanoscale.
Researchers have developed a new method to fabricate borosilicate glass nanoparticles with increased stability, overcoming limitations of current nanoparticle materials. These nanoparticles could enable applications in diagnostic tests, targeted drug therapy, photonic devices, ultrasonic microscopy, and chemical filtration membranes.
Researchers have developed a new class of polymer-based semiconductors that distribute themselves evenly at the top and bottom of the film, enabling large-scale manufacturing. This breakthrough could lead to practical, high-performance electronic devices such as flexible displays and photovoltaic cells.
The LEADERS study demonstrated that Biosensors DES is non-inferior to Cypher DES in terms of clinical events, stent thrombosis rates and angiographic follow-up data. The trial included a broad range of patients with symptomatic coronary disease, reflecting routine clinical practice.
A new randomised study has found that biolimus-eluting stents are as effective as sirolimus-eluting stents in treating patients with chronic stable coronary artery disease or acute coronary syndromes. The study also showed similar effectiveness of each stent in reducing in-stent percentage diameter stenosis.
The LEADERS study found that a biolimus-eluting stent with a biodegradable polymer is as safe and effective as a sirolimus-eluting stent with a durable polymer, reducing the risk of restenosis. The results suggest that this new generation of drug-eluting stents may offer improved long-term safety and effectiveness.
Researchers from Northwestern University have successfully mass-produced the 2008 Summer Olympics logo, 15,000 times, using a new printing technique called Polymer Pen Lithography (PPL). The PPL method allows for fast, inexpensive, and simple printing on nanometer, micrometer, and millimeter length scales.
Researchers have created ultrathin polymer films made of nanocrystals using a novel production technique. The method, led by Stefan Mecking, produces films with a thickness of 50 nm using individual prefabricated nanocrystal building blocks.
Glowing films developed by UC San Diego chemists can quickly reveal trace amounts of nitrogen-based explosives, providing evidence in crime-solving. The technology uses fluorescent polymers that emit blue light under UV light, detecting minute amounts of explosives.
A team of Penn State researchers created a simple artificial cell with a mix of PEG and dextran polymers to investigate the organization and function of cell components. The model cell exhibited polarity, a critical step in development, and showed the interrelationship between cytoplasm and cell membrane.
Researchers at UC San Diego have created experimental solar cells with nanowires that show promise as efficient thin-film solar cells of the future. The new design increases electron transport and reduces recombination, leading to a significant boost in efficiency.
Scientists at NIST have created a synthetic cartilage replacement that can withstand hundreds of pounds of pressure and is pliable like gelatin. The double-network hydrogels' unique structure helps dissipate deformation energy, allowing them to endure large deformations without breaking apart.
Researchers made a significant breakthrough in understanding the physics of translocation, showing that memory effects in polymeric molecules dominate their behavior. This discovery has major implications for drug delivery and gene therapy, as well as single-molecule characterization techniques.
Researchers develop inexpensive, quick-drying polymer PES for improved photolithography processes, enabling lower-cost, on-chip nanoimprinting lithography technology. PES offers advantages over existing materials in terms of cure temperature, water uptake, and adherence to copper.
A team of researchers from Seoul National University has developed a novel approach for aligning carbon nanotubes in microscale devices. The technique utilizes the flow of a nanotube-containing solution through nanochannels, relying on capillary force to order the nanotubes within the channels.
Scientists at NIST made direct measurements of thin polymer film expansion and collapse in photolithography, revealing a complex chemistry that affects transistor performance. The findings offer new insights into modifying resist chemistry to control swelling and achieve optimal edge resolution.
The Rutgers-Camden team has identified conditions that ensure thorough polymer coating and compiled new data on the effects of wavelengths on specific properties. The research aims to improve the coating of polymers in smoothness and uniformity, crucial for biomedical devices like pacemakers and artificial joint replacements.
Researchers at MIT develop a new method to produce tiny particles with defined size and shape featuring regular patterns in two or three dimensions. The team creates Janus particles, microparticles with two chemically different hemispheres, using stop-flow interference lithography.