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NanoFocus

October 17, 2011

Shedding Nanoparticles

Shedding Nanoparticles

Materials Science: Chemists observe metal objects sloughing off ions to form nanoparticles.

October 17, 2011

Rules For Design

Rules For Design

Materials Science: Guidelines predict structures formed by nanoparticles and DNA linkers.

October 17, 2011

Linker-Free Molecular Wires

Linker-Free Molecular Wires

Electronics: Metal-carbon bonds increase electrical conductance.

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October, 2011

October 17, 2011

Shedding Nanoparticles

Materials Science: Chemists observe metal objects sloughing off ions to form nanoparticles.

Rules For Design

Materials Science: Guidelines predict structures formed by nanoparticles and DNA linkers

Linker-Free Molecular Wires

Electronics: Metal-carbon bonds increase electrical conductance

October 14, 2011

Pushing Raman To The Nanoscale

Materials Analysis: Imaging method reveals nanometer-sized defects and contaminants on graphene.



September, 2011

September 28, 2011

Designing Lithium-Ion Batteries To Last

Cathode Materials: Encasing sulfur in nanofibers could help high-energy batteries survive repeated recharging.

September 12, 2011

Nanomedicines Stick To Cellulose

Nanoparticle Safety: Excreted nanoparticles containing drugs could pose a threat in the environment.

September 1, 2011

Method Separates Hybrid Nanoparticles

ACS Meeting News: Chromatographic method purifies complex magnetic nanostructures.



August, 2011

August 31, 2011

Making Greener Flame Retardants

ACS Meeting News: Environmentally friendly films protect cotton and foam from flames and heat.

August 24, 2011

Gold Nanoparticles Help Scientists Detect Growth-Promoting Drugs

Food Safety: New assay could detect illegal β agonists in livestock.

August 8, 2011

Method Could Resolve Nanosilver's Cloudy Toxicity Picture

Nanomaterials: Cloud point extraction could help distinguish between silver nanoparticles and silver ions.

Solar-Cell Layer Comes Into View

Microscopy method reveals the location and morphology of electron donor, acceptor, and blended regions in photoactive layers.

August 5, 2011

Graphene From Garbage

Materials: Low-value, impure carbon sources yield high-quality graphene.



June, 2011

June 27, 2011

Nanoparticles Working Together

Cancer Therapy: Tiny materials 'talk' to one another to locate, treat tumors in mice

Toward Nanotech Regulation

EPA, FDA release proposals for obtaining information about nanotechnology products

June 13, 2011

Building Small

Nanotechnology makes inroads in the construction industry.

Sticky Tape Sorts Nanotubes

Nanoscientists unveil sticky polymer films that selectively separate metallic and semiconducting SWNTs

June 9, 2011

A Simple Test Spots Bacteria

Biosensors: A strip of filter paper changes color when exposed to bacteria.

June 6, 2011

Nanoparticles: Research Firm Tries Its Hand At Making Self-Healing Paint



May, 2011

May 30, 2011

Organic Layer Smooths Dielectric Films

Insulating layer in nanoelectronic devices benefits from an organic undercoat

Peptide-Nanotube Assemblies Create Superstructures

Specially designed biomolecules coil around nanotubes and guide supramolecular ordering

Using The Force On Cancer

Researchers probe the mechanics of tumor cells with atomic force microscopy and explore the technique as a diagnostic tool

Molecules Vanish In Nanotubes

Molecular dipoles induce mirror-image nanotube dipole that screen molecules from IR light

Nanotubes Improve OLED Performance

Low-voltage transistors incorporating carbon nanotubes could make large OLED display screens a practical possibility

May 18, 2011

Fruit Flies Shake Off Silver Nanoparticles

Nanomaterials: Scientists investigate the chronic toxicity of nanoparticles in the insects

Wiring A Single-Molecule Circuit

Electronics: Researchers link polymer nanowires to single molecules

Deep-Sea Vents Dispense Nutritious Pyrite Nanoparticles

Iron from pyrite (FeS2) particles delivered over long distances helps feed oceanic bacteria and plankton

Inorganic Caps Give Nanocrystals A Boost

Replacing organic ligands with inorganic ones selectively boosts electron transport

Microrockets Take Off

Diagnostics: Tiny motors capture cancer cells and DNA from biological fluids

New Route To Graphene Devices

Nanoelectronics: Procedure draws on industry-compatible methods and materials

Probing Nanotube Photochemical Properties

ACS Meeting News: Study calls into questions key assumptions about using nanotubes in solar cells

Nanoparticles Impact Pregnancy In Mice

Study provides more detailed information about the size and chemistry of nanoparticles that can lead to problems

Single-Molecule Potentiometers

ACS Meeting News: As electrode moves along molecular wire, conductance of single-molecule device changes



April, 2011

April 18, 2011

Heterogeneous Tandem Catalysis

Catalysis: Nanostructured layered material performs multistep reaction.

April 11, 2011

New Route To Graphene Devices

Nanoelectronics: Procedure draws on industry-compatible methods and materials.

Nanoparticles Impact Pregnancy In Mice

Study provides more detailed information about the size and chemistry of nanoparticles that can lead to problems.



March, 2011

March 31, 2011

Nanoparticles Shorten Roundworms' Lives

Nanomaterials: Even at low concentrations, cerium oxide nanoparticles harm C. elegans.

March 29, 2011

Probing Nanotube Photochemical Properties

ACS Meeting News: Study calls into questions key assumptions about using nanotubes in solar cells.

March 28, 2011

Porphysomes Do It All

Biophotonics: Lipid-porphyrin nanovesicles offer both cancer diagnosis and treatment.

Stressing Strengthens Nanocomposites

Polymer-nanotube composites exhibit a property characteristic of bone and biomechanical tissues.

Press-And-Go Fingerprinting

Polyurethane-fluorescein nanofiber mats lift and quickly image latent fingerprints from different types of surfaces.

A Salty Energy Source

A newly devised battery can store the entropic energy dissipated as freshwater and saltwater mix.

March 21, 2011

Finding Phosphoproteins

Protein Analysis: Nanopolymer helps scientists detect and quantify an important protein modification.

March 17, 2011

Nanotube-Based Filter Cleans Drinking Water

Water Treatment: New filtration system removes bacteria and viruses

March 14, 2011

Nanodiamonds Fight Cancer

Chemotherapy: Faceted nanomaterials deliver drugs to tumor cells.

Poised To React

Nanoscience: Tethering molecules to gold surface forces reaction.

March 9, 2011

Confinement In Nanotubes Boosts Catalyst Performance

Chiral Catalysis: Nanoscale proximity of reactants enhances asymmetric hydrogenation

March 7, 2011

'Shaving' Graphene

Nanoscience: Zinc treatment chemically peels off layers of graphene



February, 2011

February 28, 2011

A Simple Test For Botulism Toxin

Homeland Security: A new fluorescence-based assay could find use as a field test

February 21, 2011

Connecting Bacteria

Microbiology: Nanotube links between cells foster exchange of genes and proteins

February 16, 2011

Paper Versus Pathogen

Water Treatment: Filter paper containing silver nanoparticles could cleanse bacteria-laden water

February 14, 2011

Platinum Nanocrystals Show Their Best Face

A novel strontium titanate support material guides crystals to grow with nonstandard geometry.

Gold Sulfide's Diverse Geometry

A computational study has determined that S–Au–S building blocks are key to unique cluster structures

February 7, 2011

Peeling Away Nanosheets

Materials Science: Liquid exfoliation enhances materials' properties.

Characterizing Inhaled Nanoparticles



January, 2011

January 31, 2011

Parallel Printing At The Nanoscale

Lithography: Simplified patterning method reproducibly yields thousands of copies.

January 24, 2011

Bringing Disorder To Titanium Dioxide

Change allows the photocatalyst to absorb beyond the ultraviolet range, into visible and infrared spectrum.

January 17, 2011

3-D Nanoscale Chemical Maps Of Teeth

Tomography analysis reveals compositional differences in microscopic tooth structures.

Interfacial Properties Boost Lasing by Quantum Dots

Two-monolayer-thin alloy layer in core-shell nanocrystals aids optics applications.

January 10, 2011

Nanorings Synthesized Simply

Templating: Small templates and building blocks combine to make extra-large structures.

Patterned Polymer Nanowire Arrays

Polymer nanowires can be fabricated on a large scale via a combination of laser patterning and plasma etching.

New Method For Monitoring Heparin

Tracking heparin-protamine nanoparticle formation could improve control of anticoagulation drugs during surgery.



December, 2010

December 6, 2010

New Rubber Beats Heat And Cold

Materials: Nanotube rubber maintains its viscoelasticity in extreme temperatures.



November, 2010

November 22, 2010

Ice Repellent

Nanotechnology: Small structures keep water off supercooled surfaces.

November 2, 2010

Spinning Both Ways

Nanotechnology: Researchers develop molecular motor that whirls in two directions.



October, 2010

October 25, 2010

Nanodiamond Catalyst Drives Reaction

Industrial Chemistry: Hybrid material mediates steam-free dehydrogenation.

October 11, 2010

Nobel Prize In Physics

Awards: Andre Geim and Konstantin Novoselov land prize for discovering graphene.

Tracking mRNA Particles

3-D optical imaging is used to follow mRNA particles inside yeast cells with nanometer-scale precision.



September, 2010

September 21, 2010

The Fate of Silver Nanoparticle Waste

Water Quality: Silver in our cosmetics and clothes can end up as silver sulfide nanoparticles in sewer sludge.

September 20, 2010

Enabling Nanoscale Spectroscopy

Start-up firm Anasys hopes to open new vistas in material and life sciences at the nanoscale level.

September 2, 2010

Nanopore-Based Screening

DNA Analysis: Method detects single molecules passing through holes in graphene.



August, 2010

August 30, 2010

Making Edible Nanostructures

ACS Meeting News: Food-grade starting materials yield new metal-organic framework compounds.

August 25, 2010

A New Route To Germ-Killing Photons

ACS Meeting News: Lanthanide nanomaterials convert visible light into disinfecting ultraviolet light.

August 24, 2010

SERS Hot Spots Probed

ACS Meeting News: Imaging shows larger-than-expected SERS-analyzable spots on nanoparticles.

August 23, 2010

Nanofiber Scaffolds As Brain Bandages

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Aligned nanofibers are an improved substrate for making dura mater grafts to aid healing after neurosurgery.

Crystallite Seeds Shape Up Micelles

ACS Meeting News: Templated self-assembly process produces highly uniform cylindrical nanomaterials.

August 16, 2010

A Wire For Spying On Cells

Nanotechnology: Tiny bioprobe features a field-effect transistor built from a kinked silicon nanowire.

Shining A Light On Nanotoxicity

Nanomaterials: One class of carbon nanotubes produces reactive oxygen species under sunlight.

August 9, 2010

Quantum Dot Mystery Resolved

A secondary phosphine in the starting material seems to be key to forming PbSe nanomaterials.

August 2, 2010

Power From Motion

Nanogenerators exploit mechanical processes inside and outside the body to power electronic devices.



July, 2010

No stories in July



June, 2010

June 28, 2010

Nanostructure Dynamics

Imaging: Time-resolved electron tomography provides 3-D views on ultrafast timescale.

June 21, 2010

Fiber Bundles Line Up

Materials Science: Gel-like 'noodle' material could act as cell scaffolds.

The Butterfly Effect

Nanoscience: Gyroid nanostructures give butterflies their glimmer.

June 14, 2010

Catalyst Goes Viral

Nanotechnology: Material grown on a virus template performs better than catalysts grown conventionally.

Nanoreduction Of Graphene Oxide

Materials: Scanning probe method patterns insulator with conducting features.



May, 2010

May 24, 2010

Dendrimersomes Debut

Supramolecular Chemistry: Self-assembled dendrimer-based structures could deliver drugs, other substances.

May 17, 2010

Rise Of The DNA Robots

Nanotechnology: Molecular machines stroll autonomously, transport cargo.

May 10, 2010

Plastic Antibodies Target Peptide

Nanotechnology: Molecularly imprinted nanoparticles remove bee toxin from blood.



April, 2010

April 19, 2010

Enabling Chemistry Experiments In Space

Dispersing Nanotubes Renders Them Nontoxic

Mouse study indicates that nanotube aggregates, not individual tubes, lead to pulmonary toxicity.

Thick-And-Thin Nanowire Segments

A new electrochemical method yields nanowires with alternating dense and porous sections.

April 12, 2010

Nanotechnology Investment

U.S. Focuses on commercialization and strengthening environmental, health, and safety research.

Data Storage Goes Organic

Materials Science: Device relies on changes in azo conductivity.

Salty Coronene Sorts Carbon Nanotubes

Scientists take advantage of organic salt's π interactions to separate metallic and semiconducting nanotubes.

April 5, 2010

Bright Lights For Imaging

Fluorinated dyes take a laser licking but keep on ticking.



March, 2010

March 29, 2010

Probing Nanotoxicity

Analytical methods provide insight into hazards of nanomaterials.

March 22, 2010

Gold Dust Extends Raman's Reach

Spectroscopy: Nanoparticles open scattering technique to new applications.

March 1, 2010

Nanotube Thermocell Harvests Waste Heat

Device could capture energy lost as low grade heat in industrial waste streams.



February, 2010

February 15, 2010

Very Cool Chemistry

Fundamentals: Reactions at nano-Kelvin temperatures illustrate the role of quantum mechanics in reactivity.

A Big Picture Look At The Small Scale

Book's lush illustrations, engaging text bring micro- and nanoscale science to a broad audience.

February 8, 2010

Lax About Nanomaterial Handling

Exposure: many protective measures are not being utilized, survey shows.

Paul Alivisatos

LBNL's new director focuses on renewable energy, climate.

February 1, 2010

Medication On Demand

Drug Delivery: Electric field spurs nanoscale device to release cargo.

Tiny Features Keep Termite Wings Dry

Star-shaped microstructures and tiny hairs with nanoscale ridges wick away water to keep the insects flying.



January, 2010

January 25, 2010

Nanowire Arrays Map Neural Circuits

High resolution method reveals electrical connections in the brain .

January 18, 2010

Finding Green In Gold

Materials: Precious metal in nanostructured form mediates oxidations selectively.

Graphene Nanogaps For DNA

A narrow gap in a graphene sheet attached to gold electrodes has been proposed as a means to sequence DNA .

January 11, 2010

Gilded Graphene

Materials: Gold coat and microscopy methods offer new way to see and analyze atoms-thick carbon sheets.

Clay-Polymer Nanolayers Improve Gas-Barrier Films

A composite composed of alternating nanolayers could better protect electronics, food, and pharmaceuticals.

January 4, 2010

Titania's Prowess

Catalysis: Gold's surprising reactivity may be partly due to oxide support.

Archive: 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005

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