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Synthesis produces new antibiotic

Rice University scientists have successfully synthesized a newly discovered natural antibiotic, viridicatumtoxin B, which shows potent activity against Gram-positive bacteria. The simplified synthesis of this compound may pave the way for developing more effective antibiotics against superbugs.

SourceRice University·JournalJournal of the American Chemical Society·DateAug 28, 2014

Pacific plate shrinking as it cools

Researchers at Rice University and the University of Nevada have found that cooling of the Pacific plate causes horizontal contraction and deformation. The rate of contraction is faster in younger parts of the plate, leading to a predicted 10 times faster contraction than older parts.

SourceRice University·JournalGeology·DateAug 27, 2014

Biomimetic photodetector 'sees' in color

Rice University researchers have created a CMOS-compatible, biomimetic color photodetector that directly responds to red, green and blue light. The device uses an aluminum grating that can be added to silicon photodetectors with the mainstay technology, "complementary metal-oxide semiconductor," or CMOS.

SourceRice University·JournalAdvanced Materials·DateAug 25, 2014

Worm virus details come to light

The research reveals the viral capsid structure, showing similarities to other viruses, and identifies potential binding sites for modification. The findings may lead to new information on host-virus interactions and the development of custom-made viruses to target parasitic or pathogenic worms.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateAug 18, 2014

New test reveals purity of graphene

Researchers have developed a simple method to detect contaminants on atom-thin graphene using terahertz spectroscopy. The technique involves placing the graphene on a layer of indium phosphide, which emits terahertz waves when excited by a laser pulse, allowing for non-contact detection and mapping of changes in electrical conductivity.

SourceRice University·JournalScientific Reports·DateAug 13, 2014

Moore quantum materials: Recipe for serendipity

Rice University physicist Emilia Morosan has been awarded a $1.5 million grant from the Gordon and Betty Moore Foundation to investigate unusual quantum materials. Her research aims to uncover fundamental properties of these compounds, which may lead to new discoveries in condensed matter physics.

Foam favorable for oil extraction

Researchers at Rice University have found that foam is more effective than water, gas, and surfactant combinations in removing oil from low-permeability formations. Foam's unique properties allow it to penetrate and dislodge oil without losing its effectiveness, making it a promising tool for enhanced oil recovery.

SourceRice University·JournalLab on a Chip·DateAug 12, 2014

Children in immigrant families more likely to be sedentary

Children of immigrants from all racial and ethnic backgrounds have lower levels of physical activity than U.S.-born white children. Asian immigrant children are nearly three times as likely to have low levels of physical activity, while Hispanic and unspecified ethnicity children are nearly two times as likely.

SourceRice University·JournalSocial Science & Medicine·DateAug 4, 2014

New tools advance bio-logic

Researchers at Rice University and the University of Kansas Medical Center have developed modular genetic circuits that can handle multiple chemical inputs simultaneously. These new tools allow scientists to design synthetic cells for specific tasks, such as biofuel production, environmental remediation, and disease treatment.

SourceRice University·JournalACS Synthetic Biology·DateAug 4, 2014

Study finds physical link to strange electronic behavior

A Rice University-led team has found a physical link between magnetic properties and electronic behavior in barium iron nickel arsenide, a key material for high-temperature superconductivity. The study uses neutron measurements to reveal an analogous behavior in the material, providing new clues to understanding this phenomenon.

SourceRice University·JournalScience·DateJul 31, 2014

Researchers uncover clues to flu's mechanisms

The study reveals how hemagglutinin protein reconfigures itself as it infects host cells, providing new insights into the path of the flu virus. This understanding could lead to the development of a universal flu vaccine that lasts a lifetime.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJul 31, 2014

Tough foam from tiny sheets

Researchers at Rice University have developed a tough and ultralight foam using atomic-scale materials, with properties including high strain handling and bounce-back ability. The foam can be tailored to any size and shape, and its lightweight density is 400 times less than graphite.

SourceRice University·JournalNature Communications·DateJul 29, 2014

Seeing is bead-lieving

Researchers use magnetic beads and DNA springs to create flexible polymer chains with varying stiffness. The study provides insight into the physics of 'bead-spring' polymers, which can be actuated with magnetic fields.

SourceRice University·JournalLangmuir·DateJul 28, 2014

Carbyne morphs when stretched

Rice University scientists discovered that stretching carbyne by just 3% opens a band gap, enabling semiconducting properties. This finding could revolutionize mechanically activated nanoscale electronics and optics.

SourceRice University·JournalNano Letters·DateJul 21, 2014

Does practice really make perfect?

A meta-analysis of 88 studies on deliberate practice found that it explains 26% of the variance in performance for games, 21% for music, and 18% for sports. While practice improves performance, other personal factors also play a role in predicting success.

SourceRice University·JournalPsychological Science·DateJul 16, 2014

Cell membrane proteins give up their secrets

Researchers have developed a method to predict membrane protein folding using energy landscape theory, increasing the technique's value to disease and drug research. The study successfully determined that thermodynamic funnels hold the upper hand in folding proteins inside a membrane, similar to globular proteins.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJul 16, 2014

Labs characterize carbon for batteries

A new theoretical model predicts how carbon components will perform in lithium-ion batteries, providing a tool for fine-tuning electrodes. The study found a universal linear relationship between lithium binding energy and states-filling work, allowing scientists to quickly evaluate material performance without expensive computations.

Researchers unzip nanotubes by shooting them at 15,000 mph

Researchers at Rice University have found a way to unzip carbon nanotubes into graphene nanoribbons without using chemicals, by firing them at high speeds. The process works by hitting the nanotubes broadside or lengthwise, resulting in ribbons with ragged edges that can be used for strength and electrical properties.

SourceRice University·JournalNano Letters·DateJun 30, 2014

Water-cleanup catalysts tackle biomass upgrading

Rice University researchers have successfully developed palladium-gold nanocatalysts that convert glycerol, a waste byproduct of biodiesel production, into valuable chemicals. The catalysts produce a 'Goldilocks' effect, striking the perfect balance between palladium and gold to achieve faster conversion rates.

SourceRice University·JournalChemical Science·DateJun 26, 2014

New data bolsters Higgs boson discovery

Researchers from Rice University have found evidence of the direct decay of the Higgs boson to fermions, a fundamental particle in the Standard Model. This finding strengthens the confirmation of the Higgs boson discovery and sets the stage for further exploration of its properties and potential connections to dark matter.

SourceRice University·JournalNature Physics·DateJun 23, 2014

Rice's Thomann wins CAREER grant to study photocatalysis

Isabell Thomann's research focuses on improving photocatalysis, a process that uses light to drive chemical reactions, with a goal of reducing carbon dioxide using sunlight. She will use an ultrafast laser spectroscopy system to study short-lived chemical intermediates and optimize the efficiency and selectivity of chemical reactions.

One step to solar-cell efficiency

Researchers have developed a simple way to etch nanoscale spikes into silicon, allowing more than 99% of sunlight to reach the cells' active elements. The new process reduces costs associated with solar cell production and increases efficiency.

SourceRice University·JournalJournal of Materials Chemistry A·DateJun 19, 2014

Nanoscale composites improve MRI

Researchers have created composite particles that can be injected into patients and guided by magnetic fields, allowing for improved detection of diseases. The nanoconstructs, made up of thousands of iron oxide particles, can be heated to kill malignant tissues or trigger the release of drugs at specific sites.

SourceRice University·JournalAdvanced Functional Materials·DateJun 16, 2014

Short nanotubes target pancreatic cancer

Researchers at Rice University have developed customized carbon nanotubes that can deliver chemotherapy agents to pancreatic cancer cells. The nanotubes are small enough to pass through the pores of cancer-related blood vessels, allowing them to target and infiltrate the nuclei of cancerous cells.

SourceRice University·JournalJournal of Materials Chemistry B·DateJun 5, 2014

Rice developing mobile DNA test for HIV

Researchers at Rice University have developed a nucleic acid-based test to detect signs of HIV and track viral loads in patients in low-resource settings. The new test, called qRPA, uses recombinase polymerase amplification and can be performed at the site of care, eliminating the need for complex lab equipment.

SourceRice University·JournalAnalytical Chemistry·DateJun 5, 2014

Quantum criticality observed in new class of materials

Physicists at Rice University have discovered a new class of materials that exhibit quantum criticality, a phenomenon closely related to high-temperature superconductivity. The research provides valuable insights into the behavior of heavy fermion metals, which could lead to a broader understanding of quantum criticality.

SourceRice University·JournalNature Materials·DateJun 4, 2014

Rice University produces carbon-capture breakthrough

Researchers at Rice University have created a porous material that can capture and polymerize carbon dioxide from natural gas at ambient temperature. The material shows promise to replace more costly and energy-intensive processes, enabling the economic production of gas resources with higher carbon dioxide content.

SourceRice University·JournalNature Communications·DateJun 3, 2014

Not all diamonds are forever

Rice chemist Ed Billups and colleagues created nanodiamonds in hydrogenated anthracite coal, but smaller diamonds degraded with subsequent images taken under an electron microscope. The researchers found a window of stability for diamonds within a range of 19-52 angstroms.

SourceRice University·JournalThe Journal of Physical Chemistry Letters·DateMay 22, 2014

No bioengineered gut bacteria, no glory

Rice University synthetic biologist Jeff Tabor is working on a three-year project to engineer probiotic bacteria that can detect disease signals in the gut and prevent diseases such as obesity and depression. The goal is to create an edible probiotic bacterium that can help protect sailors and marines from these health issues.

Two-lock box delivers cancer therapy

Rice University researchers have developed a tunable virus that can target and destroy cancer cells by unlocking only in the presence of two selected proteases. The virus uses peptides to lock its capsid, which is then unlocked by specific enzymes, allowing it to bind to diseased cells.

SourceRice University·JournalACS Nano·DateMay 6, 2014

Graphene only as strong as weakest link

Researchers from Rice University and Georgia Tech measured graphene's fracture toughness for the first time, finding it to be somewhat brittle. The study highlights the importance of fabricating high-quality graphene sheets without defects to ensure its structural applications.

SourceRice University·JournalNature Communications·DateApr 29, 2014

Graphene only as strong as weakest link

Researchers measured graphene's fracture toughness for the first time, finding it to be significantly lower than its intrinsic strength. The study highlights the importance of fabricating high-quality graphene sheets without defects.

SourceRice University·JournalNature Communications·DateApr 29, 2014