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December 21, 2009
Capturing CO2
NASA's AIRS instrument mapped global tropospheric CO2 levels, shown in this animation. Red indicates higher levels.
From Article »
CO2's Little Helper
Climate Change: Satellite data show water vapor increases CO2 warming.
December 21, 2009
Water Warming
An animation of AIRS measurements from June to November 2005 shows the global transport and distribution of water vapor.
From Article »
CO2's Little Helper
Climate Change: Satellite data show water vapor increases CO2 warming.
December 7, 2009
PTFE slabs with no intervening lubricant
These simulations reveal the molecular-scale wear protection provided by a lubricating layer between polymer slabs. The slabs are transparent to highlight five molecular chains (green and black) at the interface. In the absence of lubricant the chains quickly bunch up and degrade.
From Article »
Tribology All Around
Meeting highlights how friction triggers molecular-scale changes in adhesive tape, cosmetics, and more.
December 7, 2009
PTFE slabs with multiple monolayers of lubricant
These simulations reveal the molecular-scale wear protection provided by a lubricating layer between polymer slabs. The slabs are transparent to highlight five molecular chains (green and black) at the interface. When a few monolayers of C2F6 lubricant are present (multicolored section in video) the polymer chains remain largely in place and intact.
From Article »
Tribology All Around
Meeting highlights how friction triggers molecular-scale changes in adhesive tape, cosmetics, and more.
November 30, 2009
Dip And Pull
Scanning electron microscopy video shows what happens when a silver-coated atomic force microscopy tip is dipped into a drop of liquid gallium at room temperature: Gallium readily adheres to the silver-coated tip, and as the tip is retracted, a nanowire of Ag2Ga alloy forms and eventually detaches from the gallium drop (J. Appl. Phys. 2005, 98, 073510-1).
From Article »
From Thesis To Business
Flexible, high-aspect-ratio nanowires turn researcher into entrepreneur.
From Article »
Refinery Accidents Under Investigation
November 13, 2009
Light Walks Oil Drops Across Water
A movie shows the reversible motion of an oil droplet as a function of the wavelength of illumination.
From Article »
Light Walks Oil Drops Across Water
Chemists use the power of light to control surface tension and drive liquid droplets across a liquid surface.
November 13, 2009
Light Walks Oil Drops Across Water
A movie shows the manipulation of an oil droplet along the letter N.
From Article »
Light Walks Oil Drops Across Water
Chemists use the power of light to control surface tension and drive liquid droplets across a liquid surface.
October 12, 2009
CCD Sensor
This Bell Labs video chronicles Boyle and Smith's quest to develop the CCD.
From Article »
Nobel Prize In Physics
Awards: Revolutionary optical technologies take this year's honor.
October 5, 2009
A Gardener's View
Spend a few minutes viewing a video, by photographer and videographer Terry Lowenthal, of sculptor Rebecca Kamen speaking about her approach to art and science and what went into the creation of her installation Diving Nature: An elemental garden.
October 5, 2009
Materials For Adventure
New fibers and membranes make outdoor gear lighter and more comfortable.
From Article »
Materials For Adventure
New fibers and membranes make outdoor gear lighter and more comfortable.
From Article »
Obama Visits NIH
Funding: President touts $5 billion from recovery act for biomedical research.
From Article »
Heads Butt Over Deadly Explosion
Dust Accident: Safety board seeks better maintenance; unions want tougher regulations.
From Article »
Heads Butt Over Deadly Explosion
Dust Accident: Safety board seeks better maintenance; unions want tougher regulations.
From Article »
Heads Butt Over Deadly Explosion
Dust Accident: Safety board seeks better maintenance; unions want tougher regulations.
From Article »
Superresolution Imaging Goes 3-D
ACS Meeting News: New microscopy techniques break the diffraction limit in three dimensions.
September 7, 2009
Rolling Membrane
iPALM captured this 3-D image of integrins, a type of membrane protein.
From Article »
Superresolution Imaging Goes 3-D
ACS Meeting News: New microscopy techniques break the diffraction limit in three dimensions.
August 31, 2009
Revealing Atoms
This video shows how Leo Gross, Fabian Mohn, Nikolaj Moll, Peter Liljeroth, and Gerhard Meyer at IBM Research, in Zurich, were able to use atomic force microscopy to visualize the atoms and bonds in a single molecule.
From Article »
Molecule's Atoms, Bonds Visualized
High-resolution AFM technique makes even hydrogen atom positions visible.
August 24, 2009
Atomic-scale Cleanup
At the interface between nanolayers of copper (blue) and niobium (green), collisions with high-energy particles (such as fission products) dislodge atoms from their lattice sites--but the damage heals quickly. (yellow = dislodged/energetic Cu; red = dislodged/energetic Nb. For clarity, atoms in "perfect" lattice positions are not shown).
From Article »
Coming Back To Nuclear Energy
A resurgence of interest in new power plants is driving discovery of advanced materials.
August 24, 2009
Underwater Magic
The synthetic version of the worm's glue can fasten together pieces of bone submerged in water.
From Article »
Worm Inspires Medical Adhesive
Synthetic mimic of worm's glue can bond wet materials and could be used to fix broken bones.
August 24, 2009
Not Picky
The worm can incorporate just about any building material in its shelter. Here, it gathers bits of silicon to stick together.
From Article »
Worm Inspires Medical Adhesive
Synthetic mimic of worm's glue can bond wet materials and could be used to fix broken bones.
August 10, 2009
Tiny Bubbles
A new three-component catalyst evolves hydrogen from water with exceptional efficiency when stimulated by visible-wavelength lamp light.
From Article »
Hydrogen From Sun And Water
Photocatalysis: Three-component catalyst evolves hydrogen with exceptional efficiency.
August 10, 2009
Tiny Bubbles
A new three-component catalyst evolves hydrogen from water with exceptional efficiency when stimulated by sunlight.
From Article »
Hydrogen From Sun And Water
Photocatalysis: Three-component catalyst evolves hydrogen with exceptional efficiency.
July 22, 2009
Bright Idea
In a flash, graphite oxide, a brown electrical insulator, is converted into graphene, a conductor. By using masking techniques, flash-reduction can be used to make the patterns shown at the end of the video.
From Article »
Making Graphene In A Flash
Exposing precursor to a burst of camera light induces fast photoreduction.
July 13, 2009
Fast Change
Forces associated with a femtosecond laser pulse (white cone) compress the interlayer spacings in a graphite crystal, momentarily transforming the material to diamond (lattice with red spheres). The forces then expand the spacings, thereby separating the graphene sheets in graphite. (The degree of expansion is exaggerated in this artistic video rendering.)
From Article »
Ultrafast EELS
Extreme version of electron energy loss spectroscopy probes bonding dynamics.
June 29, 2009
LRO/LCROSS Mission
An animation of the LRO/LCROSS mission shows the spacecraft from launch to orbit and impact on the moon's surface.
From Article »
Back To The Moon
NASA launches two probes to look for landing sites, search for water.
June 29, 2009
Spreading The Word
Middlebury's quidditch group went on the road during spring break in 2008 to demonstrate the game at other schools.
From Article »
Quidditch For Chemists
From Article »
Quidditch For Chemists
From Article »
Microtubes Follow Directions
Researchers control the growth, direction, and size of spontaneously assembling microtubes.
June 8, 2009
Atomic Knockoff
Under the influence of the energetic beam in an electron microscope, thin regions of a boron nitride crystal grow thinner still, eventually being reduced to single-atom thickness, as seen in these videos.
From Article »
Another One-Atom-Thick Material
Boron nitride joins graphene on list of thinnest free-standing crystals.
June 8, 2009
Atomic Knockoff
Under the influence of the energetic beam in an electron microscope, thin regions of a boron nitride crystal grow thinner still, eventually being reduced to single-atom thickness, as seen in these videos.
From Article »
Another One-Atom-Thick Material
Boron nitride joins graphene on list of thinnest free-standing crystals.
June 1, 2009
An Inside Look
Multiple-beam X-ray scanners, such as the ones developed by Smiths Detection, provide airport security officers with the information required to quickly determine if carry-on luggage conceals explosive or otherwise dangerous contents.
From Article »
Keepers Of The Gate
Advanced imaging and detection technologies help root out threats of terrorism in airports.
June 1, 2009
Mini Mixer
Bacteriorhodopsin crystals are grown by this device, which injects a total of 20 nanoliters of aqueous protein solution (brown droplets injected from right and left) into a lipid reservoir. This video shows the device in action.
From Article »
Finding Crystallization Sweet Spots
Automated device mixes nanoliter quantities of membrane-protein components.
From Article »
Route To Stable Carbon Chains
Strings of carbon atoms could be building blocks for electronic nanostructures.
May 18, 2009
Light Bending
Rapid bending of the platelike microcrystals (about 525 µm long) of trans-4-(dimethylamino)azobenzene takes place when the sample is irradiated with 365 nm light. The microcrystals whip forward in the direction opposite to the light source. After 30 seconds, the crystals return to the initial flat shape.
From Article »
Bending Crystals By Light
Azobenzene double-bond isomerization, induced by UV light, translates into mechanical motion in platelike microcrystals.
May 11, 2009
Not Dead Yet
Argentine ant workers ignore pupae treated with a mixture of the "do not discard" chemicals dolichodial and iridomyrmecin.
From Article »
Chemical Vital Signs
Living ants mask ever-present death cues with molecular indicators of vitality.
April 27, 2009
Rotations
By analyzing a series of high-resolution micrographs of a porous particle of silica, researchers can produce computed three-dimensional images and videos of the particle (top) and of the pores inside the particle (bottom). Gold particles, which appear as dots scattered throughout the images, are embedded to aid in image alignment.
From Article »
Perfecting Solid-Catalyst Synthesis
ACS Meeting News: Researchers strive to devise methods that provide molecular-scale control.
April 27, 2009
Rotations
By analyzing a series of high-resolution micrographs of a porous particle of silica, researchers can produce computed three-dimensional images and videos of the particle (top) and of the pores inside the particle (bottom). Gold particles, which appear as dots scattered throughout the images, are embedded to aid in image alignment.
From Article »
Perfecting Solid-Catalyst Synthesis
ACS Meeting News: Researchers strive to devise methods that provide molecular-scale control.
April 13, 2009
Molecular Dynamics
Simulation of a villin headpiece folding on a seven-microsecond timescale, performed using NAMD.
From Article »
In Cahoots: Fungi, Ants, And Bacteria
Symbiotic system could be a source of potential drug leads and enzymes for biofuel production.
From Article »
RoboCarp, Dreams Of Electronic Sheep
From Article »
RoboCarp, Dreams Of Electronic Sheep
April 3, 2009
Ersatz Membranes
Adding more fatty acid to Zhu and Szostak's lipid membrane container triggers a dramatic transformation, as captured by an epifluorescence microscope. The container changes from a sphere to a threadlike compartment. Gentle agitation from puffs of air helps the "thread" break into daughter spheres.
From Article »
Improved Replicating Synthetic Membranes
Scientists have devised vesicles with multilayer lipid membranes that grow and divide—an improved model for creating artificial cells.
March 30, 2009
Chemical Munitions Dumped At Sea
Researchers use robotic arms to collect water samples and sediment near munitions located off Pearl Harbor.
From Article »
Lying In Wait
Researchers help U.S. Army search for chemical munitions dumped at sea.
March 30, 2009
Real Time
This video correlates the time evolution of battery performance (top) with changes in the electrode material, as determined from NMR data (bottom). The continuously growing peaks near 0 ppm indicate that as the battery is used, lithium silicides decompose by reacting with the battery electrolyte and forming unwanted lithium organic salts.
From Article »
NMR Method Reveals Hidden Battery Chemistry
Study may help novel lithium-ion battery achieve high charge-storage capacity.
March 23, 2009
Flexing Muscles
A CNT aerogel sheet expands when a positive voltage is applied and returns to its normal shape when the voltage is removed.
From Article »
Muscular Nanotubes
Aerogels built from carbon nanotubes turn electrical into mechanical energy.
From Article »
Safety Board Retreats
Citing antiterrorism law, Bayer pressures Chemical Safety Board to cancel public meeting on fatal accident.
March 9, 2009
Nanopore Sequencing
Animation shows how biological nanopores will potentially be used to sequence DNA.
From Article »
Key Advance In DNA Sequencing With Nanopores
High-quality detection takes the label-free, single-molecule technique closer to reality.
From Article »
On The Bubble
Cleantech start-ups and investors weigh the odds of growing during a downturn.
March 2, 2009
Flexible Future
Graphene-based electronic components conduct electrical current even when they are flexed and stretched. Manufacturers are working to incorporate that property into advanced wearable and flexible personal electronic systems, such as the one depicted in this future-concept video.
From Article »
Graphene: Carbon As Thin As Can Be
Surprising mechanical, structural, and electronic properties of one-atom-thin sheets grab widespread attention.
From Article »
An Influential Body
Board on Chemical Sciences & Technology provides expert advice based on good science.
March 2, 2009
Neutralizing Disease
Antibodies that target a conserved pocket in a flu virus protein prevent a conformational change of the protein that is necessary for the virus to enter a lung cell.
From Article »
Skeleton Key May Defuse Flu
Antibodies bind a flu protein nook common to many viral strains.
February 23, 2009
Field Ion Microscopy Video
Field ion microscopy video footage shows 30-second oscillation cycles of oxygen adsorbing onto a rhodium tip until the system becomes thermodynamically unstable, at which time the oxide reduces from the edges back to the apex, releasing water.
From Article »
Surface Impacts Of Nanoscale Oscillations
Oscillating reactions on surfaces are guided by nanoscale structural features rather than by diffusion, as in solution oscillating reactions.
February 16, 2009
Surface-catalyzed Formation Of Water
Time-lapse series of STM images shows step by step how hydrogen reacts with oxygen to form water on a titania crystal surface.
February 9, 2009
Jean-Claude Bradley - Second Life Study Session
Jean-Claude Bradley incorporates a dizzying array of Web technology into his work as a professor at Drexel University. Bradley teaches a study session for an undergraduate organic chemistry course. He holds optional quizzes in Second Life, a 3-D virtual world on the Internet. Watch the quiz take place.
From Article »
C&EN Talks With Jean-Claude Bradley
Organic chemist champions open science, Web technology.
February 9, 2009
Jean-Claude Bradley - FriendFeed
Bradley and his colleagues use a Web application called FriendFeed to enhance scientific collaborations and make new connections. View an introduction to FriendFeed's capabilities.
From Article »
C&EN Talks With Jean-Claude Bradley
Organic chemist champions open science, Web technology.
February 9, 2009
Jean-Claude Bradley - Solubility Data
Bradley and his collaborators have developed highly interactive ways of viewing solubility data that they generate in the laboratory in Second Life. Watch a demonstration of just one of those unique interfaces.
From Article »
C&EN Talks With Jean-Claude Bradley
Organic chemist champions open science, Web technology.
February 9, 2009
Antics
These Aphaenogaster cockerelli ants are peeved that the blue-dotted worker ant exhibits a hydrocarbon profile identifying it as fertile. In ant colonies with queens, fertile ants are assaulted to protect procreative privileges for the queen.
From Article »
Ant Adultery, Brainiac Studs, No Fathers Required
February 5, 2009
Atomic Quantum Dots
Click below for a description and an animated depiction of the properties of atomic quantum dots.
From Article »
Atom-sized Quantum Dots
Newly discovered property of silicon atoms may shrink computers.
February 2, 2009
The OCO measuring CO₂
This animation shows the Orbiting Carbon Observatory measuring CO2
From Article »
Mapping Earth's CO2
NASA's soon-to-be-launched Orbiting Carbon Observatory will help map sources and sinks of the greenhouse gas.
From Article »
Curvy Crystals
Researchers begin to unravel the mechanism behind lab-made shapely inorganic crystals.
From Article »
Curvy Crystals
Researchers begin to unravel the mechanism behind lab-made shapely inorganic crystals.
From Article »
Curvy Crystals
Researchers begin to unravel the mechanism behind lab-made shapely inorganic crystals.
From Article »
Curvy Crystals
Researchers begin to unravel the mechanism behind lab-made shapely inorganic crystals.
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