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March 29, 2011

C&EN Picks From The National Meeting

C&EN Picks From The National Meeting

Tuesday's highlights from this year's meeting in Boston.

March 28, 2011

C&EN Picks From The National Meeting

C&EN Picks From The National Meeting

Monday's highlights from this year's meeting in Boston.

March 27, 2011

C&EN Picks From The National Meeting

C&EN Picks From The National Meeting

Sunday's highlights from this year's meeting in Boston.

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December 13, 2010

Nanowire Electrode

A TEM video of a charging nanowire electrode shows the wire widening, bending, and coiling as the reaction front proceeds up the structure.

From Article »

Peering Into A Battery

Materials Science: Technique enables direct look at electrode transformations during charging.

December 3, 2010

Squeeze

Water molecules in water wires between aggregating prion peptides are squeezed out one by one as a dry interface forms.

From Article »

Water Factors In On Amyloid And Prion Aggregation Rates

Peptide aggregation in aqueous solution depends on the rate of formation of a dry interface between the biomolecules.

November 8, 2010

Rapid Response

Within seconds of agitating a mixture of immiscible liquids and polyaniline nanofibers, a concentration gradient of the nanofibers at the interface of the liquids triggers a deposition process that coats the vial with a thin film of the polymer, visible as a color change as the film climbs up the inside of the vial.

From Article »

Thin Films Made Easy

Simple solution-based method coats surfaces with transparent conducting polymer films.

November 8, 2010

Writing With Light

This video shows the rapid writing time of the 3-D display system, which uses 6-nanosecond pulses at a repletion rate of 50Hz. The movie demonstrates that an image can be written in about 2 seconds.

From Article »

Holographic Video

Materials Science: Photorefractive polymer enables 3-D video.

November 8, 2010

Beam Me Up

In this movie, the 3-D images of researchers on Peyghambarian's team sitting in location A are sent via the Internet to another location, B. The scientists' 3-D system at location B displays the researchers. The video is in real time and shows the speed of the entire process.

From Article »

Holographic Video

Materials Science: Photorefractive polymer enables 3-D video.

October 21, 2010

Hydrogen Burst

This simulation from an instrument on the LRO shows the time evolution of the molecular hydrogen cloud released by the LCROSS impact.

From Article »

Moon Crater's Icy Character

Astrochemistry: Lunar impactor may have struck a site of previous comet impacts.

October 8, 2010

Zoomed In

MRI imaging of water flowing through a serpentine mixer shows how fluid velocity slows around the curves (blue and green, 20 cm/second; aqua, 0 cm/second).

From Article »

Following The Flow In Microchannels

Remote-detection MRI and NMR yield detailed information about chemistry and fluid flow within microscopic structures.

August 9, 2010

A Tour Of Zhangjiang

A video showing some of the R&D facilities operating in Shanghai's main hi-tech park.

From Article »

Zhangjiang Attracts The World's R&D

China's flagship high-tech park hosts a surprising concentration of major R&D facilities.

August 9, 2010

Happy Birthday

Trick candles are fun to blow out-over and over again.

From Article »

Trick Candles

A little magnesium dust ignites surprise at birthday parties.

July 26, 2010

Skimming The Fat

This movie demonstrates how a gelator separates diesel fuel from water to form a gel.

From Article »

Sugar Derivative Solidifies Oil

Materials Chemistry: Gelation process could turn spilled oil into skimmable fat for easy cleanup.

July 26, 2010

Flammable!

Deliberately contaminating the lower portion of this millimeter-sized strip of graphite oxide with potassium hydroxide causes that portion of the sample to violently burst into flame when a hot tip is brought near the uncontaminated upper portion.

From Article »

Graphite Oxide's Flammability Explained

A common contaminant in graphite oxide renders the material highly flammable.

July 12, 2010

Magic Roundabout

Rapid bond breaking and re-forming leads concentric B6 and B13 units in this B19 cluster to rotate in opposite directions. The cluster behaves like a molecular Wankel engine, a type of rotary motor used in automobiles in which a rotor turns inside a housing. During the rotation, the cluster remains planar, so the energy barrier is minimal.

From Article »

A Boron Cluster‑Go-Round

Chemical Bonding: Fluxional behavior in B19 cluster suggests rotating concentric rings.

July 9, 2010

Fast Glowing

Gold-dicopper complex quickly luminesces green when exposed to methanol vapor.

From Article »

Sensing Volatiles In Color

A gold-dicopper complex shifts its luminescence emission wavelength when exposed to VOCs.

June 28, 2010

Nanotube Spiral

Time-resolved electron tomography captures this carbon nanotube structure undergoing ultrafast morphological changes from various viewing angles.

From Article »

Nanostructure Dynamics

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

May 24, 2010

Self-Assembly

Self-Assembly Self-assembly of a dendrimersome, from a homogenoeous solution of Janus dendrimer in water into a vesicle.

From Article »

Dendrimersomes Debut

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

May 24, 2010

Bilayer

Self-assembly of the bilayer part of a vesicle from an aqueous solution of Janus dendrimer.

From Article »

Dendrimersomes Debut

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

May 10, 2010

Lisa P. Jackson

A message to chemists and chemical engineers about stewardship and responsibility.

From Article »

Lisa P. Jackson

EPA administrator is blazing trails, from regulating greenhouse gas emissions to reforming chemical management policies.

May 24, 2010

Gussman Talks Grub

Sgt. Neil Gussman demonstrates the differences between the military rations of the 1970s and today's Meals, Ready-To-Eat (MREs).

From Article »

The Science Of Feeding Soldiers

Chemical innovations make tasty battlefield meals, ready-to-eat.

March 22, 2010

Video Tour

Video tour of the Map Ta Phut area.

From Article »

An Impasse Grows In Thailand

Political instability stops construction at chemical plants worth billions of dollars.

March 15, 2010

Whirlpool

A self-swirling pool of liquid lithium exposes a stainless steel tray underneath, in response to heat and a magnetic field.

From Article »

Stirring Liquid Metals Without A Stir Bar

Heat and a magnetic field lead liquid lithium to swirl on its own, like a whirlpool.

March 15, 2010

This Tastes Yucky

In studies of pleasant and unpleasant tastes, Berridge and other researchers have found that infants, other primates, and even rats show remarkably similar reactions, as shown in this video. An unpleasant taste elicits a gaping reaction, seen in this still, as well as head shaking and arm flailing. A pleasant flavor leads to tongue protrusion and licking of fingers or paws.

March 8, 2010

Daughter Cells Left Behind

After mutation of a protein found in the cytoskeleton of blue-green algae, some daughter algae cells (red arrow) don't get any carbon fixation enzyme compartments (green) after cell division. It takes those daughter cells longer to divide again.

From Article »

Carbon-Fixing Enzymes Line Up

Blue-green algae arrange carbon fixation enzyme compartments for maximum efficiency.

March 1, 2010

Video Tour

Take a tour of Carbogen Amcis' new Ahmedabad plant.

From Article »

A World View At India's Dishman

Smart acquisitions and a knack for retaining foreign employees propel growth of drug ingredients producer.

February 8, 2010

Limiting Lesson

University of Maryland graduate student Wendy Heiserman performs an experiment designed to explain the concept of a limiting reagent.

From Article »

Lights, Camera, Chemistry

Learning how to make lab demonstration videos can pay off for instructors and students.

February 8, 2010

Compound Cleanup

University of California, San Diego, chemist Haim Weizman develops videos about organic chemistry lab techniques. Here, watch how to purify a compound by recrystallization.

From Article »

Lights, Camera, Chemistry

Learning how to make lab demonstration videos can pay off for instructors and students.

February 5, 2010

Salt Plumes

The formation of salt from the reaction of hydrochloric acid and sodium hydroxide induces convection plumes to sprout up from the boundary between the two reactants.

From Article »

Reaction-Driven Mixing

Fluid Dynamics: Chemical interactions drive convection and stirring.

January 15, 2010

Maze Maneuvers

A droplet travels through a maze with a pH gradient. In the overlaid image, black drops show early times, red ones are later.

From Article »

Chemotaxis

Acidic droplet solves maze.

January 11, 2010

Donut Formation

A video simulation of Mo150 donut assembly shows a Mo36 cluster forming first, then serving as the template for formation of the donut structure. Molybdenum oxide building blocks are shown as clusters containing one (yellow), two (red), or eight (blue) Mo atoms.

From Article »

Templating A Molecular Donut

Nanotechnology: Molybdenum oxide cluster provides seeding ground to form donut-shaped structure.

January 4, 2010

Season's Greetings

Watch the makings of the microsnowman for the National Physical Laboratory's holiday card.

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