Articles tagged with Molecular Physics
Researchers discover a microscopic phenomenon that enables hydrogels to swell and contract quickly, improving the flexibility of soft robots. This breakthrough could lead to faster and more agile robots with applications in healthcare, manufacturing, and search and rescue operations.
Researchers at UTA used ultra-high energy neutrino particles to search for signatures of quantum gravity, but found no evidence of expected quantum gravitational effects. This non-observation represents a powerful statement about the still-unknown physics operating at the interface of quantum physics and general relativity.
Scientists at POSTECH create conducting polymers with exceptional electrical conductivity, rivaling graphene's performance. The breakthrough achieves ultrafast electron mobility and long phase coherence length, overcoming a major challenge in organic semiconductors.
Researchers upgraded a photoelectron momentum microscope to use two undulator beamlines, enabling element-selective measurements and precise analyses of valence orbitals. This innovation provides deeper insights into the behavior of electrons in materials, advancing fields like condensed matter physics and materials science.
Researchers developed a technology to detect infectious disease viruses in real-time using a single nano-spectroscopic sensor. The system uses molecular fingerprinting and can detect specific substances with tailored detection, enabling rapid and precise analysis.
Researchers visualize chiral interface state at atomic scale for the first time, allowing on-demand creation of conducting channels. The technique has promise for building tunable networks of electron channels and advancing quantum computing.
Researchers at Chalmers University of Technology developed a computational model to measure entropy production on the nanoscale in laser-excited crystalline materials. The model reveals that phonons, lattice vibrations, can produce entropy similar to bacteria in water.
Researchers have developed a reliable and efficient computational method to find transition states in chemical reactions, reducing computational costs by 50-70%. The new method outperforms existing methods like Nudged Elastic Band (NEB), achieving high accuracy in identifying transition states in 98% of cases.
Scientists observed dynamic electronic behavior and surface structure of triphenylene molecules deposited on graphite substrates, revealing a standing-up configuration. The study contributes to the development of new luminescent materials and functional organic electronic devices.
Researchers at Max Born Institute have successfully implemented high-resolution linear-absorption dual-comb spectroscopy in the ultraviolet spectral range. This breakthrough enables experiments under low-light conditions, paving the way for novel applications in precision spectroscopy and biomedical sensing.
Researchers at Oxford University discovered that similarly charged particles in solution can attract each other at large separations, depending on the solvent. This effect has significant implications for processes such as self-assembly and phase separation.
Researchers analyzed the physical principles of dendritic painting, a technique that uses ink droplets to create intricate fractals. The study found that the thickness of the paint layer and the concentration of diluting medium are key factors in controlling the outcome of dendritic painting.
Researchers from Heinrich Heine University Düsseldorf trapped H2+ molecules in a trap using a laser, measuring their vibrations for the first time. The results matched theoretical predictions closely, enabling testing of fundamental laws of physics and determination of physical constants.
A team of scientists from SFU has created a synthetic protein-based motor that harnesses biological reactions to propel itself, called 'The Lawnmower'. The device uses the digestive enzyme trypsin to cut peptides and convert them into energy, enabling self-guided motion.
A new study reveals that molecules can interact non-reciprocally without external forces, driven by kinetic asymmetry and gradients of reactants and products. This finding has significant implications for our understanding of complex behavior in living organisms and the development of novel molecular machines.
A study using optical tweezers reveals new insights into the roles of specific DNA motor proteins in packaging viral genomes. Researchers found that a conserved TerS subunit plays a key role in controlling viral genome packaging, and suggests a universal mechanism for terminase motor function.
A team from Argonne National Laboratory has extended the coherence time for a novel type of qubit to nearly 1,000 times better than the previous record. This achievement enables the qubit to perform thousands of operations with high precision and speed.
Osaka Metropolitan University scientists have developed a super-efficient laser light-induced detection method that reduces detection time from hours to minutes. The technique allows for ultrafast and ultrasensitive measurement of biological nanoparticles, including exosomes, with diameters of 50–150 nm.
Researchers have developed a new way to identify chiral molecules using light, which vastly improves detection efficiency. The new method uses lasers to drive chiral electronic currents in molecules, causing one version to emit bright light while its counterpart remains dark.
Researchers demonstrate critical roles of metal cocatalysts in modulating surface oxidation kinetics and selectivity in methane oxidation. Metal cocatalysts play a key role in promoting CO2 production over C2H6 formation.
Scientists have successfully imaged electronic molecular orbitals of single molecules, revealing superatom molecular orbitals suitable for electron transport in organic electronics. This breakthrough imaging technique will facilitate studying structural changes and reactions of molecules.
A team of astronomers using the James Webb Space Telescope has detected complex organic molecules in a galaxy over 12 billion light-years away. The discovery suggests that the presence of these molecules does not necessarily indicate star formation, contradicting a long-held assumption.
Researchers have visualized the C-H bond breakage in alkanes using X-ray light, revealing the role of metal catalysts. The study solves a 40-year-old mystery and provides new insights into catalyst performance. Scientists hope to direct electron flow to develop better catalysts for the chemical industry.
Researchers successfully detect X-ray signature of individual atoms, enabling the identification of materials at an atomic level. The breakthrough technique has potential applications in environmental and medical sciences, as well as advancing technology.
Dr. John H. Bushweller's team at UVA Cancer Center is developing novel drugs to block abnormal proteins that cause pediatric leukemia. The new approach aims to improve efficacy and reduce toxicity, potentially leading to better patient outcomes.
Scientists develop elastoactive chains with self-oscillatory, self-synchronizing, and self-snapping behavior, mimicking biological machines. The study explores material properties and potential applications in autonomous robot development.
Scientists have successfully regulated the flow of single molecules in a solution by opening and closing a nanovalve, which could revolutionize chemical and biochemical synthesis. This technology has the potential to detect pathogens with high sensitivity and create new materials for various industries.
Scientists found that oxocarbon-based dyes have intermediate electronic configurations between closed-shell and open-shell forms. The study reveals that longer wavelengths of near-infrared light absorption increase the contribution of open-shell forms in the dye.
Researchers found previously unknown interactions among people in southern Africa between the 5th and 20th centuries, revealing a complex network of cultural exchange. The study used geochemical analyses on copper objects to reconstruct connectivity across the region, providing new insights into the history of the area.
A new technology uses light-induced convection to enhance the permeability of cell membranes, allowing for efficient and selective delivery of biofunctional molecules to targeted cells. This results in lower concentrations of drugs needed for testing and potentially reduced costs and faster drug discovery.
Researchers have discovered four new 2D Janus materials that can catalyse the splitting of water into hydrogen and oxygen with excellent stability and light absorption. These materials, which are well-suited for redox reactions, could be a key element in the global effort to eliminate carbon emissions.
Researchers have developed nanofluidic devices to study single molecule chemical reactions in solution. These devices provide a test tube-like environment to confine individual molecules and enable high temporal resolution for investigating fast single molecule reactions. By integrating various fields using nanofluidics, scientists can...
Researchers found that salt concentration is crucial for icicle ripple formation. With increasing salt levels, ripples become stronger and more visible. This discovery explains the rippled patterns on gutters and car bumpers during winter.
A Princeton-led team discovered that abnormally large droplets in brain cells are linked to ALS, Alzheimer’s and a range of dysfunctions. The study provided a new understanding of the fundamental physical mechanism behind protein aggregation.
Researchers at Osaka Metropolitan University successfully measured spin transport in a molecular film, achieving a spin diffusion length of 62 nanometers. This breakthrough paves the way for the development of smaller, faster, and energy-efficient electronics.
Researchers discovered that interfacial water promotes non-thermal C-H activation by abstracting hydrogen from methane, improving conversion rates dramatically. This work provides a fundamental basis for designing non-thermal catalytic systems for sustainable methane utilization under ambient conditions.
A new nanopore-based sensing device explores the aggregation of tau and tubulin proteins in neurodegenerative diseases such as Alzheimer's and Parkinson's. The device provides volume information about protein molecules and their states at the single-molecule level, offering insights into protein binding and aggregation.
Osaka Metropolitan University scientists have developed a novel protein detection method that allows for ultra-fast and highly sensitive detection of proteins, enabling early disease diagnoses. The method uses light-induced acceleration of antigen-antibody reaction to detect attogram-level proteins within 3 minutes.
Researchers at Argonne National Laboratory have developed a way to rotate a single molecule, europium complex, clockwise or counterclockwise on demand. This technology could lead to breakthroughs in microelectronics, quantum computing and more.
Using machine learning to study water's phase changes, researchers found strong computational evidence in support of liquid-liquid transition. This technique can be applied to real-world systems that use water, informing water's use in industrial processes and climate models.
Researchers discover circular polycatenanes with properties similar to DNA rings, showcasing a connection between local and global properties. These structures have unique elastic properties and can be used in designing new materials and micro-sensors.
Prof. Katharina Boguslawski and Prof. Piotr Wcisło from Nicolaus Copernicus University have been awarded ERC grants for their ambitious projects, which aim to push the boundaries of knowledge in physics and astronomy. The awards will provide significant funding for research, equipment, and personnel over a period of five years.
Researchers propose an optical imaging system for real-time hypoxia imaging in cancer treatment. The technique utilizes protoporphyrin IX to enhance contrast between tumors and healthy tissues, allowing for more effective surgical removal.
Scientists at Kyushu University have developed organic molecules that align in the same direction, creating a 'giant surface potential' when evaporated onto a surface. This alignment leads to a significant electric field, which can improve OLED efficiency and open new routes for realizing devices that convert vibrations into electricity.
A research group from Osaka Metropolitan University investigates Adiabatic State Preparation (ASP) for efficient electron correlation effects in molecules. They find four key points relevant to ASP's computational conditions, making the method more practical.
Physicists have created a way to simulate quantum entanglement between interacting particles using neural networks and fictitious 'ghost' electrons. This approach enables accurate predictions of molecule behavior, which could lead to breakthroughs in pharmaceutical development and material design.
A team led by Dr SeyedAbdolreza Sadjadi and Professor Quentin Parker from HKU's Laboratory for Space Research identified highly ionised species of C60 fullerene as plausible carriers of some prominent UIE bands. Theoretical mid-infrared signatures of these ionised forms match well with astronomical UIE features, providing a promising d...
Researchers at Osaka Metropolitan University have developed a pentacene derivative with significantly improved photostability, exceeding 100 times that of existing products. The molecule's planarity and π-electron conjugation are strengthened through the addition of a radical substituent.
University of Queensland scientists have discovered a way to make molecular switches work at room temperature, paving the way for more efficient and environmentally friendly technologies. This breakthrough could lead to advancements in MRI scans, sensors, carbon capture, and hydrogen fuel cells.
Scientists found that certain dynamical defects help explain the allowed vibrational modes inside amorphous solids, like glasses. These findings may lead to controlling the properties of amorphous materials.
Researchers developed a real-time polarized infrared spectroscopy technique to study metal-organic frameworks and guest molecule interactions. This method provides insights into host-guest and guest-host interactions, enabling the development of high-performance porous materials.
Researchers have developed a method to control the rotational states of chiral molecules, allowing for specific separation of enantiomers. By irradiating chiral molecules with UV radiation and microwaves, the team has gained more control over which 'hand' is in which state.
A team of scientists successfully investigated the electronic structure of tautomeric mixtures using inelastic X-ray scattering (RIXS) at BESSY II. They can now experimentally separate the signal of each individual molecule, providing detailed insight into their functionality and chemical properties.
A study by Sibani Lisa Biswal and Kedar Joshi shows that magnetically driven colloidal suspensions exhibit behavior consistent with the principles of classical thermodynamics, including vapor pressure, viscosity, and surface tension. The researchers' findings have implications for designing materials with reconfigurable properties.
Researchers have developed a new imaging technique using X-ray lasers to capture high-resolution images of complex single molecules. The technique, known as Coulomb explosion imaging, uses ultra-bright X-ray flashes to explode the molecule and reconstruct its image.
A team led by Osamu Takahashi developed a procedure to reproduce the double peak feature of x-ray emission spectroscopy spectra in liquid water. They used molecular dynamics calculations and first principles quantum mechanical calculations to estimate XES spectra, reproducing features such as the double peaks.
Researchers at Osaka City University have developed a new technique for controlling the luminescence color of materials using optical tweezers and nanotextured black silicon. The system can change the color of a material in response to changes in light pressure, allowing for fully reversible remote control.
Scientists create triatomic molecules by applying radio-frequency pulse to an ultracold mixture of sodium and potassium atoms. The resulting association signal suggests a strong binding between the molecules.
Researchers at the European XFEL facility have taken pictures of gas-phase iodopyridine molecules at atomic resolution using ultra-bright X-ray pulses. The images were reconstructed from the fragments caused by a Coulomb explosion, providing unprecedented clarity for this method and molecule size.
A team of scientists successfully constructed a supramolecular rotor inside a hollow cube-shaped zinc(II)-metallated porphyrinic cage (Zn-PB) molecule. The addition of a chemical stimulant initiates both rotary and tumbling motions, controlled by external stimuli.