Articles tagged with Polymers
Researchers from NC State University have developed a simple, scalable method to align gold nanorods, which respond differently to light depending on their orientation. The team used electrospun polymer nano/microfibers to achieve long-range alignment of the nanorods at both nanoscale and larger length scales.
Researchers at Duke University Medical Center have discovered a new approach to treat inflammatory auto-immune disorders like lupus and multiple sclerosis. The anti-inflammatory agents use polymers to neutralize external nucleic acids that trigger an overactive immune response.
A new device, developed by Scottish researchers, can reliably detect explosive vapors using a compact silicon-based micro-system. The device measures the change in electron lifetime, less affected by environmental factors, making it more reliable than previous devices.
A newly synthesized polymer, fitted with molecular pincers, effectively captures nicotine molecules and its analogues. The polymer can be used for fabrication of sensitive and selective chemical sensors to determine nicotine in solutions, as well as for slow, controlled release of nicotine for therapeutic purposes.
A University of Connecticut scientist has developed electrochromic lenses that can change color rapidly, reducing waste and increasing production. The technology also has potential applications for the US military, such as enhancing situational awareness in dynamic environments.
A team of scientists has created a new 3D tumor model that can grow in a realistic and easily accessible substrate, speeding up cancer drug discovery. The model's 3D nature provides a more accurate representation of how tumors grow in the body, reducing the likelihood of promising drugs failing during animal testing.
Researchers found that microorganisms swim slower in elastic fluids due to increased viscosity and resistance. The study used nematode worms to test the effect of elasticity on swimming speed.
A joint study by academics in Switzerland, Germany, and at Boston University reveals a unique empirical law quantifying market behavior near price lows and highs. The researchers found that this law is valid for both small and large financial bubbles, suggesting that the formation of trends does not depend on time scale.
Researchers from Zhejiang University have expanded metal-free click polymerization to propiolate-azides, efficiently preparing functional poly(aroxycarbonyltriazole) compounds with high molecular weight and regioselectivity. These polymers exhibit aggregation-induced emission characteristics and serve as sensitive fluorescent chemosens...
Scientists at Case Western Reserve University, U.S., have created a polymer-based material that can heal itself when exposed to ultraviolet light. The new materials, called 'metallo-supramolecular polymers,' behave like normal polymers but can be repaired using light.
Scientists discover a polymer-based material that can heal itself quickly and easily with the help of ultraviolet light, restoring its original properties. The material, called metallo-supramolecular polymers, has potential applications in coatings for consumer goods such as cars, floors, and furniture.
A £6 million research programme aims to create new generation of high performance fibre reinforced polymer composites, capable of sustaining large deformations without breaking. The materials will provide greater reliability, safety and design flexibility, with the potential to reduce greenhouse gas emissions by up to 15%.
Researchers have made a breakthrough in developing a universal blood product that can be transfused without matching the donor and recipient's blood types. This new approach uses immunocamouflage to hide blood cells from antibodies, allowing for a reduced risk of fatal immune reactions.
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.
Researchers at Northwestern University developed a new method for rapidly prototyping nanoscale devices and structures, combining the benefits of scanning-probe lithography and polymer pen lithography. The technique, called hard-tip, soft-spring lithography, produces patterns with sub-50-nanometer resolution and scalability.
Researchers have created a new method for rapidly producing protein-polymers using overlap-extension rolling circle amplification. This technique allows for the synthesis of large libraries of proteins with subtle differences, which can be used to rapidly screen new combinations and develop new classes of protein-based polymers.
A recent study by the National Physical Laboratory shows that light can control the electrical properties of graphene, enabling the development of new optoelectronic devices. The researchers successfully created a device that retains its modified properties until heated, opening up possibilities for highly sensitive sensors.
Researchers have developed a new type of sensor that can rapidly detect biomarkers in real time, enabling an inexpensive and quick way to collect diagnostic information about patients. The technology has the potential to diagnose cancer and other diseases by detecting specific compounds in a person's breath.
The Iowa State team developed a process for producing a thin and uniform light-absorbing layer on textured substrates that improves the efficiency of polymer solar cells by increasing light absorption. Tests showed a 20% increase in power conversion efficiency and a 100% increase in light captured at the red/near infrared band edge.
Researchers have developed a simple method to fabricate free-standing polymer membranes with precisely patterned holes, opening up potential applications in microfluidics. The technique uses photolithography and prepolymer, allowing for easy fabrication of membranes with accurate sizes and shapes.
Researchers at Los Alamos National Laboratory have fabricated transparent thin films capable of absorbing light and generating electric charge. The semiconducting polymer-fullerene material, which forms a honeycomb pattern, has potential for large-scale energy-generating solar windows or optical displays.
Researchers have developed a holographic system that can transmit near-real-time 3D images using a novel photorefractive polymer. The system can refresh images every two seconds, making it faster than previous versions by over 100 times.
A team at the University of Arizona has developed a new type of holographic telepresence that can project three-dimensional, moving images in real-time. This breakthrough technology enables applications such as telemedicine, advertising, and entertainment to take on new levels.
Scientists have developed transparent thin films capable of absorbing light and generating electric charge over large areas. The material combines elements for light harvesting and electric charge transport, enabling potential applications in energy-generating solar windows and transparent solar panels.
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 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...
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.
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...