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Rice University


New tactic targets brain tumors

A new study from Rice University suggests that therapies targeting the insulin signaling pathway in brain tumors may be ineffective if they target the wrong molecules. Researchers found that glioblastomas, the deadliest form of brain cancer, have a complex relationship with insulin and other growth factors.

SourceRice University·JournalPLOS Computational Biology·DateApr 20, 2015

Nanotubes with 2 walls have singular qualities

Rice University researchers discovered that double-walled carbon nanotubes can be tuned for specific electronic properties by controlling their configuration and distance between walls. The study found that combining metallic with semiconducting nanotubes could lead to the creation of nanotube transistors.

SourceRice University·JournalNanotechnology·DateApr 16, 2015

Cobalt film a clean-fuel find

Researchers at Rice University have discovered a cobalt-based thin film that can produce both hydrogen and oxygen from water to feed fuel cells. The film is highly porous, inexpensive, and scalable, making it a potential alternative to expensive metals like platinum in water-electrolysis devices.

SourceRice University·JournalAdvanced Materials·DateApr 15, 2015

Amniotic stem cells demonstrate healing potential

Rice University and Texas Children's Hospital scientists successfully used amniotic stem cells to promote blood vessel growth in hydrogels, enhancing tissue repair for infants with birth defects. The study paves the way for biocompatible patches for congenital heart defects.

SourceRice University·JournalJournal of Biomedical Materials Research Part A·DateApr 9, 2015

Cells exercise suboptimal strategy to survive

A new study published in BMC Systems Biology uses computational method corsoFBA to model cellular metabolism and discover how organisms adapt to changing environments. The researchers, led by Amina Qutub, aim to develop new treatments for diseases such as stroke and cancer.

SourceRice University·JournalBMC Systems Biology·DateApr 6, 2015

How do you feel? Video of your face may tell all

Rice University engineers create a highly accurate, touch-free system that analyzes subtle changes in skin color to monitor patients' vital signs. The technique overcomes challenges of low-light conditions, dark skin tones and movement by averaging skin-color change signals from different face regions.

SourceRice University·JournalBiomedical Optics Express·DateApr 6, 2015

Water makes wires even more nano

Rice University scientists have developed a technique called meniscus-mask lithography to create sub-10 nanometer wide wires from various materials. The method uses the curvy surface of water as a mask, enabling the production of ultra-nano structures that are crucial for miniaturizing electronic devices.

SourceRice University·JournalNano Letters·DateApr 6, 2015

Rice fine-tunes quantum dots from coal

Researchers at Rice University have developed a method to control the size-dependent band gap of coal-based graphene quantum dots, enabling specific semiconducting properties. The new process uses ultrafiltration or direct control of reaction temperature, producing smaller dots with different optical and electronic properties.

SourceRice University·JournalACS Applied Materials & Interfaces·DateMar 18, 2015

Maps predict strength of structures

Rice researchers Rouzbeh Shahsavari and Navid Sakhavand have created universal maps that predict the properties of natural and biomimetic platelet-matrix composites. The maps are dimensionless and can be applied to materials built with nanoscale blocks as well as brick walls, or bigger.

SourceRice University·JournalNature Communications·DateMar 16, 2015

Designing a better way to study stomach flu

A team of researchers is working on a five-year program to create a bioreactor that more closely simulates the complex tissues and dynamic movements of the intestinal track. This project aims to deliver a simple, easy-to-use and relatively inexpensive system for infectious disease labs.

Symmetry matters in graphene growth

The study found that geometric relationships between graphene and the substrate determine island shapes, with triangular surfaces leading to more irregular structures. Understanding this process can help design grain boundaries with specific properties, useful for electronics applications.

SourceRice University·JournalPhysical Review Letters·DateMar 16, 2015

Asphaltene analysis takes a giant step

Asphaltene analysis takes a giant step with the development of an indirect method that detects and measures particles as small as 100 nanometers. This technique can accurately quantify asphaltene precipitation and account for water presence, offering valuable insights into preventing clogs in oil production lines.

SourceRice University·JournalEnergy & Fuels·DateFeb 24, 2015

Buckyballs offer environmental benefits

Researchers at Rice University have discovered that treated carbon-60 molecules can remove metals from water and other liquids, with the ability to reserve them for future use. The process also shows promise for separating specific metals from complex fluids, potentially addressing contaminated water issues.

SourceRice University·JournalDalton Transactions·DateFeb 9, 2015

Nano-antioxidants prove their potential

Researchers have successfully tested nanoparticles that can quickly quench damaging superoxides, potentially protecting against further brain damage in traumatic injuries. The particles, known as PEG-HCCs, have shown an enormous capacity to neutralize thousands of reactive oxygen species molecules, restoring normal oxygen levels.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateFeb 9, 2015

Worms lead way to test nanoparticle toxicity

A Rice University study uses the lowly roundworm to measure the effects of various nanoparticles on individual organisms and entire populations. The researchers found that five types of nanoparticles showed little to no toxicity, while others were moderately or highly toxic to the worm population.

Winding borders may enhance graphene

New research suggests that sinuous grain boundaries in graphene can relieve stress, resulting in enhanced mechanical strength and predictable electronic transport gaps. This discovery may lead to the development of polycrystalline graphene with precise misalignment of components, enabling the control of semiconducting characteristics.

SourceRice University·JournalAdvanced Functional Materials·DateFeb 2, 2015

Evidence mounts for quantum criticality theory

A new study by Rice University and international collaborators adds to the growing evidence for a theory that explains high-temperature superconductivity and heavy fermion physics through quantum fluctuations. The research observed a sharp Fermi surface reconstruction, consistent with theoretical predictions of unconventional quantum c...

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJan 30, 2015

How cancer turns good cells to the dark side

A new study by Rice University researchers shows how cancer cells use 'jagged' proteins to hijack cell-signaling process and promote metastasis. The mechanism plays a crucial role in embryonic development and wound healing.

SourceRice University·JournalProceedings of the National Academy of Sciences·DateJan 26, 2015

The latest fashion: Graphene edges can be tailor-made

Researchers at Rice University have discovered a method to control the edge properties of graphene nanoribbons by manipulating the conditions under which they are pulled apart. This allows for the creation of semiconducting graphene with desirable electronic properties, opening up new possibilities for applications in modern electronics.

SourceRice University·JournalNanoscale·DateJan 23, 2015

Hydrogels deliver on blood-vessel growth

Researchers have created a new hydrogel that can be injected into wounds, forming scaffolds that help them heal quickly. The material promotes angiogenesis, the growth of blood vessels, which is essential for tissue repair and reduces the risk of complications.

SourceRice University·JournalACS Nano·DateJan 20, 2015

Laser-induced graphene 'super' for electronics

Researchers at Rice University have developed stacked, three-dimensional supercapacitors using laser-induced graphene, which show excellent energy-storage capacity and power potential. The devices can be scaled up for commercial applications and offer flexibility and scalability benefits.

SourceRice University·JournalACS Applied Materials & Interfaces·DateJan 14, 2015

Atomic placement of elements counts for strong concrete

Researchers Rouzbeh Shahsavari and Saroosh Jalilvand found that atomic-level forces affect the mechanical properties of complex particle-based materials, such as concrete. They suggest new ways to fine-tune chemistry to make concrete less prone to cracking and more suitable for specific applications.

SourceRice University·JournalACS Applied Materials & Interfaces·DateJan 14, 2015

Crush those clinkers while they're hot

Researchers at Rice University found that optimizing the process of turning clinkers into cement can save a significant amount of energy and reduce carbon dioxide emissions. By analyzing the crystal and atomic structures of clinkers, they identified areas where defects and internal stresses affect the grinding process.

SourceRice University·JournalACS Applied Materials & Interfaces·DateJan 13, 2015

Cheap asphalt provides 'green' carbon capture

Rice University researchers have developed a new carbon capture material that can hold 114% of its weight in carbon dioxide, capturing more than current methods. The material is made from inexpensive asphalt and can be reused multiple times without degrading.

SourceRice University·JournalACS Applied Materials & Interfaces·DateJan 7, 2015

Atom-thick CCD could capture images

Researchers at Rice University have developed a two-dimensional, light-sensitive material that can capture images. The material, copper indium selenide (CIS), is highly sensitive to light due to its slow-dissipating electrons, making it 10 times more efficient than previous materials.

SourceRice University·JournalNano Letters·DateDec 19, 2014

Rice study fuels hope for natural gas cars

Researchers at Rice University have identified 48 metal organic frameworks that outperform current materials in storing compressed natural gas. The discovery could lead to more efficient and environmentally friendly natural gas cars with lighter, more compact tanks.

SourceRice University·JournalThe Journal of Physical Chemistry C·DateDec 18, 2014

Big-data analysis reveals gene sharing in mice

Researchers detected three instances of cross-species mating that influenced the evolutionary paths of old world mice, suggesting hybridization may not be an evolutionary dead end. The study found shared genetic code between two species of mice from Europe and Africa, with implications for human genetics and health.

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

Scientists trace nanoparticles from plants to caterpillars

A Rice University study examines how nanoparticles move through the food chain, tracing uptake and accumulation in plant roots, leaves, and caterpillars. The research found significant variation in nanoparticle accumulation rates based on surface coating types, with negatively charged particles avoiding clumping altogether.

SourceRice University·JournalEnvironmental Science & Technology·DateDec 16, 2014

3-D maps reveal the genome's origami code

High-resolution 3D maps of the human genome reveal thousands of hidden switches that regulate genes, including those associated with cancer and diseases. The study provides a new understanding of genetic regulation and its role in cellular differentiation.

SourceRice University·JournalCell·DateDec 11, 2014

Defects are perfect in laser-induced graphene

The study finds that laser-induced graphene (LIG) has a unique structure with five- and seven-atom rings, which can store charges and make it suitable for supercapacitors. Researchers developed a scalable one-step process to create LIG in detailed patterns.

SourceRice University·JournalNature Communications·DateDec 10, 2014

Buckyballs enhance carbon capture

Researchers at Rice University have created an environmentally friendly compound that effectively captures carbon dioxide emissions from industrial flue gases and natural gas wells. The new material, combined with buckminsterfullerene molecules, achieves high selectivity and efficiency in capturing carbon dioxide while rejecting methane.

SourceRice University·JournalScientific Reports·DateDec 3, 2014

Microbullet hits confirm graphene's strength

Rice University scientists used a novel testing method to measure graphene's ability to absorb impact, finding it stretches before breaking. The technique, LIPIT, allows for rapid evaluation of nanoscale materials, with potential applications in body armor and spacecraft shielding.

SourceRice University·JournalScience·DateDec 1, 2014

Cell's skeleton is never still

Researchers developed computer models that match experimental results, explaining the dynamic processes behind essential cell components. Microtubule stability is crucial for cell survival, and the study provides new insights into how cells maintain or dismantle these structures.

SourceRice University·JournalThe Journal of Physical Chemistry B·DateNov 24, 2014

Graphene/nanotube hybrid benefits flexible solar cells

Rice University scientists have developed a novel cathode for dye-sensitized solar cells using graphene/nanotube hybrids, improving efficiency and reducing costs. The new material has a huge surface area, allowing for more efficient electron transfer and better contact with the electrolyte.

SourceRice University·JournalJournal of Materials Chemistry A·DateNov 17, 2014