Current Chirality News and Events

Current Chirality News and Events, Chirality News Articles.
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New topological properties found in "old" material of Cobalt disulfide
Researchers working with the Schoop Lab discovered the presence of Weyl nodes in bulk CoS2 that allow them to make predictions about its surface properties. The material hosts Weyl-fermions and Fermi-arc surface states within its band structure, which may enable it to serve as a platform for exotic phenomena. (2020-12-18)

New, ultrastable tetrahedral "chiral zinc" added to synthetic chemistry toolbox
Researchers have designed and built a new chemical tool inspired by natural metal-containing enzymes in living organisms. The product, a tetrahedral ''chiral zinc'', maintains its shape for years, providing a new structure with exciting possibilities for manufacturing pharmaceuticals and optical electronics. (2020-12-15)

Sheets of carbon nanotubes come in a rainbow of colours
Nanomaterials researchers in Finland, the United States and China have created a colour atlas for 466 unique varieties of single-walled carbon nanotubes. (2020-12-14)

Sheets of carbon nanotubes come in a rainbow of colors
Nanomaterials researchers in Finland, the United States and China have created a color atlas for 466 unique varieties of single-walled carbon nanotubes. (2020-12-14)

Ultrafast dynamics of chiral spin structures observed after optical excitation
A joint research project of Johannes Gutenberg University Mainz (JGU), the University of Siegen, Forschungszentrum Jülich, and the Elettra Synchrotron Trieste has achieved a new milestone for the ultra-fast control of magnetism. (2020-12-09)

Highly sensitive detection of circularly polarized light without a filter
Japanese scientists developed a photodiode using a crystalline film composed of lead perovskite compounds with organic chiral molecules to detect circularly polarized light without a filter. It is expected as a technology for visualization of the invisible change of object surfaces such as stress intensity and distribution. (2020-11-16)

Wound-healing biomaterials activate immune system for stronger skin
Researchers at Duke University and the University of California, Los Angeles, have developed a biomaterial that significantly reduces scar formation after a wound, leading to more effective skin healing. This new material, which quickly degrades once the wound has closed, activates an adaptive immune response that can trigger regenerative wound healing, leaving behind stronger and healthier healed skin. (2020-11-09)

Tunable THz radiation from 3D topological insulator
Wu's research group has been investigating a three-dimensional topological insulator of bismuth telluride (Bi2Te3) as a promising basis for an effective THz system. They recently systematically investigated THz radiation from Bi2Te3 nanofilms driven by femtosecond laser pulses. (2020-11-02)

Scientists discover new structures in the smallest ice cube
A research team led by Prof. JIANG Ling and Prof. YANG Xueming from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences, in collaboration with Prof. LI Jun from Tsinghua University, revealed the coexistence of five cubic isomers in the smallest ice cube, including two with chirality. (2020-10-29)

Tailoring 2D materials to improve electronic and optical devices
New possibilities for future developments in electronic and optical devices have been unlocked by recent advancements in two-dimensional (2D) materials, according to Penn State researchers. (2020-10-27)

Electromagnetic chirality: From fundamentals to nontraditional chiroptical phenomena
Theoretical frameworks of chiroptical properties of electromagnetic materials and fields are reviewed. Based on these fundamentals, chiroptical systems can be understood, and complicated chiroptical phenomena can be described. (2020-09-02)

Research captures how human sperm swim in 3D
Using state-of-the-art 3D microscopy and mathematics, Dr Hermes Gadêlha from the University of Bristol, Dr Gabriel Corkidi and Dr Alberto Darszon from the Universidad Nacional Autonoma de Mexico, have reconstructed the movement of the sperm tail in 3D with high-precision. (2020-08-13)

A plot twist in pharmaceuticals: Single nanoparticles could pave the way for medicines on demand
For the first time, a single, twisted nanoparticle has been accurately measured and characterised in a lab, taking scientists one vital step closer to a time when medicines will be produced and blended on a microscopic scale. (2020-07-20)

Cherned up to the maximum
In topological materials, electrons can display behaviour that is fundamentally different from that in 'conventional' matter, and the magnitude of many such 'exotic' phenomena is directly proportional to an entity known as the Chern number. New experiments establish for the first time that the theoretically predicted maximum Chern number can be reached -- and controlled -- in a real material. (2020-07-09)

Research reflects how AI sees through the looking glass
Intrigued by how reflection changes images in subtle and not-so-subtle ways, a team of Cornell University researchers used artificial intelligence to investigate what sets originals apart from their reflections. Their algorithms learned to pick up on unexpected clues such as hair parts, gaze direction and, surprisingly, beards - findings with implications for training machine learning models and detecting faked images. (2020-07-02)

Understanding of relaxor ferroelectric properties could lead to many advances
A new fundamental understanding of polymeric relaxor ferroelectric behavior could lead to advances in flexible electronics, actuators and transducers, energy storage, piezoelectric sensors and electrocaloric cooling, according to a team of researchers at Penn State and North Carolina State. (2020-06-29)

A mechanism to obtain metal "nanoscrews"unveiled at CIC biomaGUNE is published in Science
Gold atoms are deposited by means of chemical reduction onto previously formed gold nanorods to produce a quiral structure. These ''nanoscrews'' interact with circularly polarized light much more efficiently than what is achieved with any other known object. These properties could lead to the detecting of biomolecules in a very selective and very sensitive way. It is a versatile, reproducible mechanism that is scalable for the fabrication of nanoparticles with strong chiral optical activity. (2020-06-25)

A fresh twist in chiral topology
Electrons in ''chiral crystals'', solid-state materials with definite ''handedness'', can behave in unexpected ways. An interdisciplinary team from research institutions in Germany and China has realized now a theoretically predicted peculiar electronic state in a chiral compound, PtGa, from the class of topological materials. The study which was published in the journal Nature Communications allows a fundamental understanding of the electronic properties of this novel semimetal. (2020-06-22)

New study: Chemists at the University of Halle are able to induce uniform chirality
Chirality is a fundamental property of many organic molecules and means that chemical compounds can appear in not only one form, but in two mirror-image forms as well. Chemists at Martin Luther University Halle-Wittenberg have now found a way to spontaneously induce chirality in crystalline, liquid-crystalline and liquid substances, without requiring any external influence. The findings could be significant for the development of new active substances and for materials science. (2020-06-08)

A new horizon for vibrational circular dichroism spectroscopy
(1) The development of solid state and time-step VCD methods opened a new horizon to reveal the mechanism of chirality amplification from microscopic to supramolecular scales. (2) The authors were selected as PCCP Emerging Investigators of the Royal Society of Chemistry. (2020-05-28)

Cichlid fish loves exaggerated shells
Scientists dissect the complex choices of animals. (2020-05-26)

Chirality-assisted lateral momentum transfer for bidirectional enantioselective separation
Chiral nanoparticles which twist the light were theoretically predicted to experience lateral forces perpendicular to light vector but lacks experimental verification. Now, scientists from Singapore, Italy, Spain and China demonstrate the first experimental sorting of chiral microparticles using optical lateral force induced by linearly polarized light. The force direction intriguingly depends on the polarization and incident angle of light, handedness of particles, etc. The technique will open new avenues for the detection and sorting of microparticles with imperceptible chemical differences (2020-05-25)

How cosmic rays may have shaped life
Physicists propose that the influence of cosmic rays on early life may explain nature's preference for a uniform 'handedness' among biology's critical molecules. (2020-05-20)

HKBU scientists eliminate drug side effects by manipulating molecular chirality
Scientists from Hong Kong Baptist University (HKBU) have developed a novel technique that can produce pure therapeutic drugs without the associated side effects. (2020-05-19)

Eavesdropping on single molecules with light by replaying the chatter
Scientists have pioneered a new technique to expose hidden biochemical pathways involving single molecules at the nanoscale. (2020-05-15)

Intricate magnetic configuration of 3D nanoscale gyroid networks revealed
A multinational team of researchers from Tohoku University and institutions in the UK, Germany and Switzerland has revealed the magnetic states of nanoscale gyroids, 3D chiral network-like nanostructures. The findings add a new candidate system for research into unconventional information processing and emergent phenomena relevant to spintronics. (2020-04-30)

New metasurface laser produces world's first super-chiral light
Researchers have demonstrated the world's first metasurface laser that produces ''super-chiral light'': light with ultra-high angular momentum. The light from this laser can be used as a type of ''optical spanner'' to or for encoding information in optical communications. (2020-04-27)

Chiral crystals blowing off polarized spins: Phenomena detected without magnets
Scientists have discovered that a chiral crystal, which exhibits no magnetism, works as a polarizer of electron spins when the charge current is applied at room temperature in the absence of magnetic field. This phenomenon is likely to be originated from the nature that the crystal has a chiral structure. The present work makes a fundamental contribution in revealing universal properties that a wide variety of chiral materials should exhibit. (2020-04-21)

World's most complex microparticle: A synthetic that outdoes nature's intricacy
Synthetic microparticles more intricate than some of the most complicated ones found in nature have been produced by a University of Michigan-led international team. They also investigated how that intricacy arises and devised a way to measure it. (2020-04-09)

Let's do the twist
Researchers at the University of Pittsburgh and Harvard University designed a polymer known as a liquid crystal elastomer (LCE) that can be 'programmed' to both twist and bend in the presence of light. Especially in the field of soft robotics, this is essential for building devices that exhibit controllable, dynamic behavior without the need for complex electronic components. (2020-04-07)

Groovy key to nanotubes in 2D
New research offers a groovy answer to the question of what causes carbon nanotubes to align in ultrathin crystalline films discovered at Rice. (2020-03-09)

Reconfigurable chiral microlaser by spontaneous symmetry breaking
A team of researchers led by Professor Xiao Yun-Feng and Professor Gong Qihuang at Peking University has demonstrated a spontaneously symmetry-broken microlaser in an ultrahigh-Q WGM microcavity, exhibiting reconfigurable propagating directions of the chiral laser. (2020-02-28)

Unique material could unlock new functionality in semiconductors
In an article published today in Science Advances, Rensselaer Polytechnic Institute researchers detailed how they designed and synthesized a unique material with controllable capabilities that make it very promising for future electronics. (2020-02-28)

Using light to put a twist on electrons
Method with polarized light can create and measure nonsymmetrical states in a layered material. (2020-02-26)

Regioselective magnetization enabled chiral semiconducting heteronanorods
Researchers demonstrated a regioselective magnetization strategy, achieving a library of semiconducting heteronanorods with chiroptical activities. (2020-02-25)

Rice scientists simplify access to drug building block
Rice University chemists further simplify their process to make essential precursor molecules for drug discovery and manufacture. The method to modify unactivated olefins for use as building blocks could save the pharmaceutical industry millions. (2020-02-24)

Shaping the rings of molecules
Canadian chemists discover a natural process to control the shape of 'macrocycles,' molecules of large rings of atoms, for use in pharmaceuticals and electronics. (2020-02-21)

New 3D chirality discovered and synthetically assembled
Multi-layer 3D chirality of C2-symmetry has been revealed and enantioselectively synthesized. This chirality is a new addition to the family of known chirality consisting of element central, axial/helical, spiro and double planar types. In this 3D chiral framework, the top and bottom layers restrict each other from free bond rotation. These chiral 3D molecules showed strong luminescence of various colors under UV irradiation in both solution and solid phases, and displayed strong aggregation-induced emission (AIE). (2020-02-19)

Simultaneous emission of orthogonal handedness in circular polarization
Both right- and left-handed circularly polarized light were simultaneously generated from a single device, paving the way for novel applications in biosensors and organic LEDs. The device by using the liquid crystal phase of a polymer, called F8BT, was fabricated by rubbing its upper and lower surfaces in specific directions. The study demonstrates the feasibility of a light source with multiple polarizations, which could have applications in a variety of optical devices. (2019-12-13)

Two chiral catalysts working hand in hand
The stereoisomers of a molecule can cause different effects in a biological system, which is important for the development of drugs. Chemists at Münster University (Germany) have developed a synthetic method that can produce different stereoisomers from identical starting materials. The study appeared in 'Nature Catalysis'. (2019-12-03)

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