Location: california, United States
Abstract :
Detecting trace amounts of analytes in aqueous systems is important for health diagnostics, environmental monitoring, and national security applications. Single-walled carbon nanotubes (SWNTs) are ideal components for both the sensor...
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Location: Utrecht, Netherlands
Abstract :
Resolving individual atoms has always been the ultimate goal of
surface microscopy. The scanning tunneling microscope images
atomic-scale features on surfaces, but resolving single atoms...
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Location: Illinois, United States
Among the frontier challenges in chemistry in the twenty-first century are
the interconnected goals of increasing synthetic efficiency and diversity in the
construction of complex molecules.
Oxidation reactions of C–H bonds,...
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Location: Cambridge, United States
In the 2,000 or so years since the Roman Empire employed a naturally
occurring form of cement to build a vast system of concrete aqueducts and other
large edifices, researchers have analyzed the molecular structure of natural
materials and...
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Location: Delft, Germany
Molecular systems, or systems based on small organic molecules, possess
interesting and useful electronic properties. The rapidly developing area of
organic -or plastic- electronics is based on these materials. The investigations
of...
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Location: Cambridge, United States
The combustion of biomass is a major source of atmospheric trace gases and
aerosols. Regional- and global-scale models of atmospheric chemistry and climate
take estimates for these emissions and arbitrarily "mix" them into grid boxes...
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Location: California, United States
Abstract:
The ability to pattern nanostructures has important
applications in medical diagnosis,(1,
2) sensing,
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Location: Berkeley, United States
Much of our knowledge about molecular structure and reactivity is based on
interpreting how molecules interact with light. In particular, time-resolved
pump-probe studies where a first “pump” laser pulse initiates a dynamical
event,...
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Location: Cambridge, United States
Source: "The rational design of nitric oxide selectivity in
single-walled carbon nanotube near infrared fluorescence sensors for biological
detection"
Jong-Ho Kim et al
Nature Chemistry
Results: A...
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Location: Tsukuba, Japan
Among all available materials, diamond has the optimal characteristics with
respect to hardness, thermal conductivity, light transmission wavelength range,
and chemical stability. Furthermore, as a semiconducting material, diamond shows...
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Location: Cambridge, United States
In the search for answers to the planet's biggest challenges, some MIT
researchers are turning to its tiniest organisms: bacteria.
The idea of exploiting microbial products is not new: Humans have long
enlisted bacteria and yeast to...
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Location: Cambridge, United States
A team of MIT undergraduate students has invented a shock absorber that
harnesses energy from small bumps in the road, generating electricity while it
smoothes the ride more effectively than conventional shocks. The students hope
to...
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Location: Cambridge, United States
Carbon nanotubes - tiny, rolled-up tubes of graphite - promise to add speed
to electronic circuits and strength to materials like carbon composites, used in
airplanes and racecars. A major problem, however, is that the metals used to
grow...
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Location: Cambridge, United States
Satellites orbiting the Earth must occasionally be nudged to stay on the
correct path. MIT scientists are developing a new rocket that could make this
and other spacecraft maneuvers much less costly, a consideration of growing
importance as...
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Location: Chalmer, Sweden
Abstract :
In case of a canister failure in a deep bedrock repository for nuclear fuel,
the release of radiotoxic nuclides to the groundwater will depend on the
chemical environment near the fuel surface. Due to the presence of large...
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Location: Cambridge, United States
Folding paper into shapes such as a crane or a butterfly is challenging
enough for most people. Now imagine trying to fold something that's about a
hundred times thinner than a human hair and then putting it to use as an
electronic device....
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Location: Cambridge, United States
The four chloromethanes - methyl chloride (CH3Cl), dichloromethane (CH2Cl2),
chloroform (CHCl3), and carbon tetrachloride (CCl4), are chlorine-containing
gases contributing significantly to stratospheric ozone depletion and having
adverse...
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Location: Cambridge, United States
A gas used for fumigation has the potential to contribute significantly to
future greenhouse warming, but because its production has not yet reached high
levels there is still time to nip this potential contributor in the bud,
according to...
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Location: Cambridge, United States
For the first time, MIT researchers have shown they can genetically engineer
viruses to build both the positively and negatively charged ends of a
lithium-ion battery.
The new virus-produced batteries have the same energy capacity and...
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Location: Cambridge, United States
Living cells are bombarded with messages from the outside world -- hormones
and other chemicals tell them to grow, migrate, die or do nothing. Inside the
cell, complex signaling networks interpret these cues and make life-and-death...
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