Current Handedness News and Events

Current Handedness News and Events, Handedness News Articles.
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Liquid crystals create easy-to-read, color-changing sensors
Scientists at Pritzker Molecular Engineering have developed a way to stretch and strain liquid crystals to generate different colors. (2020-07-10)

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)

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)

Argonne researchers create active material out of microscopic spinning particles
Argonne researchers have created a new kind of self-healing active material out of 'microspinners,' which self-assemble under a magnetic field to form a lattice. (2020-05-28)

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)

4D electric circuit network with topology
Researchers from China and Germany have proposed a design scheme to implement a four-dimensional topological insulating state in circuit network, which provides a convenient physical platform for studying high-dimensional states. (2020-05-19)

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)

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)

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)

Using a molecular motor to switch the preference of anion-binding catalysts
Many organic molecules are chiral, which means that they are non-superimposable on their mirror image. These enantiomers can have different properties when interacting with other chiral entities, for example, biomolecules. Selectively producing the right enantiomer is therefore important in for example the pharmaceutical. University of Groningen chemists Ruth Dorel and Ben Feringa have now devised a method that not only achieves this but that also controls which version is being produced using light. (2019-12-06)

A new spin on life's origin?
University of Tokyo researchers used a rotary evaporator to coax non-chiral molecules to form supermolecules of a specific helicity. This work may be used to synthesize cheaper pharmaceuticals, and also explain how the handedness of biomolecules originated. (2019-11-01)

Let there be...a new light
Light is the fastest way to distinguish right- and left-handed chiral molecules, which has important applications in chemistry and biology. However, ordinary light only weakly senses molecular handedness. Researchers from the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI), the Israel Institute of Technology (Technion) and Technische Universitaet Berlin have now shown how to generate and characterize an entirely new type of light, synthetic chiral light, which identifies molecules' handedness exceptionally distinctly. (2019-10-28)

Estuarine waters hold promise in global pain-relief hunt
The worldwide search for an opioid alternative has made a leap forward -- with a scientific discovery in an Australian fungus indicating effective pain relief and the potential for a safer less addictive drug, helping address the opioid epidemic of deaths by overdose. (2019-10-14)

Why are there no animals with three legs?
If 'Why?' is the first question in science, 'Why not?' must be a close second. Sometimes it's worth thinking about why something does not exist. Such as a truly three-legged animal. Tracy Thomson, graduate student in the UC Davis Department of Earth and Planetary Sciences, has been pondering the non-existence of tripeds. (2019-10-01)

Chemists clarify a chiral conundrum?
Rice University researchers set out to untangle the mysterious interactions in mixtures of proteins and gold nanorods. Their experiments revealed multilevel chirality in the way proteins prompt nanoparticles to align and in how the particles' plasmons respond to light in the proteins' presence. (2019-09-26)

Save time using maths: Analytical tool designs corkscrew-shaped nano-antennae
For the first time, an HZB team has derived analytically how corkscrew-shaped nano-antennas interact with light. The mathematical tool can be used to calculate the geometry that a nano-antenna must have for specific applications in sensor technology or information technology. (2019-08-23)

Multi-state switchable stationary phase opens new doors in chiral separation
A team including researchers from Kanazawa University demonstrated HPLC separation of enantiomers using an optically active poly(phenylacetylene) derivative as a chiral stationary phase. The helical conformation of the polymer was altered from a mixed state to left- or right-handed chiral conformations by introducing Na+ or Cs+ ions, respectively, producing a switchable system that offers three different modes of recognition. It is hoped that the system will contribute to the continued development of chiral separation. (2019-07-31)

Light may magnetise non-magnetic metals, propose physicists
Physicists from Nanyang Technological University, Singapore (NTU Singapore) and the Niels Bohr Institute in Copenhagen, Denmark, have devised a method to turn a non-magnetic metal into a magnet using laser light. (2019-07-29)

Why two out of three babies are cradled on the left
Over two thirds of all people prefer to carry a baby in their left arm. The figure is as high as three quarters for women, and the same also applies to right-handed people. This is the result of an analysis of 40 studies from the past 60 years carried out by a team from the Department of Biopsychology at Ruhr-Universität Bochum (RUB). (2019-07-16)

Sexual-orientation study
A new study from Professor Doug VanderLaan's lab in UofT Mississauga's Department of Psychology looking at biological mechanisms that are often thought to influence male sexual orientation was published in the latest edition of PNAS. (2019-06-10)

Are penguins righties or lefties?
Researchers in Punta Tombo, Argentina conducted a study to see whether Magellanic penguins (Spheniscus magellanicus) showed lateralization (handedness) in their behaviors or morphology. (2019-06-06)

Wearable motion detectors identify subtle motor deficits in children
A wristwatch-like motion-tracking device can detect movement problems in children whose impairments may be overlooked by doctors and parents, according to a new study from Washington University School of Medicine in St. Louis. (2019-06-03)

How the snail's shell got its coil
Researchers from the Tokyo University of Science, Japan, have used CRISPR gene editing technology to make snails with shells that coil the 'wrong' way, providing insights into the fundamental basis of left-right asymmetry in animals. These findings are published in the journal Development. (2019-05-14)

Fitting a right hand in a left-handed mitten
Many biomolecules come in two versions that are each other's mirror image, like a left and a right hand. Cells generally use the left-hand version of amino acids to produce proteins, and uptake mechanisms were thought to share this preference. University of Groningen scientists have now shown that a prokaryotic transport protein can transport both versions of the amino acid aspartate with equal efficiency. (2019-04-25)

Electric skyrmions charge ahead for next-generation data storage
A team of researchers led by Berkeley Lab has observed chirality for the first time in polar skyrmions, in a material with reversible electrical properties -- a combination that could lead to more powerful data storage devices that continue to hold information, even after they've been turned off. (2019-04-18)

Princeton scientists discover chiral crystals exhibiting exotic quantum effects
Princeton physicist Zahid Hasan led an international team of physicists who have discovered a form of chiral crystals -- crystals with an asymmetry like biological ''handedness'' -- that host slow light-like massless electrons. The movement of some groups of electrons in these crystals mimics the behavior of magnetic monopoles. These strange properties may be utilized for next-generation quantum, magnetic and optical technologies. (2019-03-20)

Chirality yields colossal photocurrent
Typically, light is converted to electricity by chemically altering a semiconductor to have a built-in electric field. A team of researchers from Boston College, the University of California Los Angeles, and Ecole Polytechnique Federale de Lausanne have developed an alternative means using a unique semimetal that intrinsically generates direct current through the nonlinear mixing of the waves of light. (2019-03-04)

Right- or left-handed? Gene expression tells the story of snail evolution
Snails, like humans, can be right-handed or left-handed and the swirl etched into the shell of a snail can reveal a lot about them, down to their genetic makeup. Researchers from Shinshu University and the Okinawa Institute of Science and Technology Graduate University in Japan have found that the gene influencing the direction of the shell coil may also offer insight into the evolution of snails overall. (2019-02-26)

Lefty or righty molecules lend a hand to material structures
Researchers construct block copolymers that follow the chirality of their basic elements as they self-assemble into larger structures. Their controllable 'handed-ness' and tunability could lead to materials with unique optical qualities. (2019-02-11)

Physicists uncover the topological origin of surface electromagnetic waves
In work that provides insights for several areas of wave physics -- Maxwell electromagnetism, topological quantum states, and plasmonics/metamaterials -- scientists showed that the well-known surface electromagnetic waves at interfaces between homogeneous isotropic media, obtained within classical Maxwell's electromagnetism, also have a purely topological origin, similar to quantum topological states. (2019-02-04)

FSU chemists harness power of light to tackle asymmetrical molecules
A team of Florida State University researchers has found a way to turn a 'left-handed' molecule into a 'right-handed' one -- a process that could have important implications for drug development. (2019-02-04)

Long-term breastfeeding sheds light on whether an infant becomes right- or left-handed
Bottle feeding infants is associated with left-handedness, according to a new study from the University of Washington. (2019-01-07)

Chemical catalyst turns 'trash' into 'treasure,' making inert C-H bonds reactive
The Nature paper is the latest in a series from Emory University demonstrating the ability to use a dirhodium catalyst to selectively functionalize C-H bonds in a streamlined manner, while also maintaining virtually full control of the three-dimensional shape of the molecules produced. (2018-12-19)

Light triggers gold in unexpected way
Rice University researchers have discovered a fundamentally different form of light-matter interaction in their experiments with gold nanoparticles. The discovery may become useful in the development of next-generation, ultrasmall optical components for computers and antennas. (2018-11-30)

A new path through the looking-glass
Exploring the mystery of the molecular handedness in nature, scientists have proposed a new experimental scheme to create custom-made mirror molecules for analysis. The technique can make ordinary molecules spin so fast that they lose their normal symmetry and shape and instead form mirrored versions of each other. The research team from DESY, Universität Hamburg and University College London around group leader Jochen Küpper describes the innovative method in the journal Physical Review Letters. (2018-11-09)

Why people have lateral preferences when kissing and hugging
Typically, a person will initiate a hug with the right hand. Similar preferences are also present in other forms of social touch. The question of right resp. left-handedness plays a role in the process. However, it is not the only relevant aspect. (2018-10-29)

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