March 29, 2011
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
Monday's highlights from this year's meeting in Boston.
March 27, 2011
C&EN Picks From The National Meeting
Sunday's highlights from this year's meeting in Boston.
2011 Videos | »2010 Videos | 2009 Videos | 2008 Videos | 2007 Videos | 2006 Videos
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.
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.
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.
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.
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.
From Article »
Neuroscience: The Two Faces Of Pleasure And Desire
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.
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.
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.
From Article »
Walkin' In A Winter Nanoland
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