Posts

February 18, 2015

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7:26 AM | Discovery of a factor that determines the photocatalytic activity of titanium dioxide
Researchers have discovered through the in situ observation of the behavior of photoexcited carriers on the surface of a titanium dioxide crystal used as a photocatalyst that the carrier (electron and positive hole) lifetime on the crystal surface is an important factor to determine the catalytic activity.
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7:14 AM | Extremely repellent surfaces
A computational technique reveals how tiny pillars affect the condensation of vapor onto a surface.
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7:09 AM | Three-dimensional opto-electric integration
Depositing different materials on top of bulk silicon wafers enables three-dimensional opto-electric integration.

February 17, 2015

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9:01 PM | Vanille et vanilline
Les Manchettes scientifiques d’Ariel Fenster Tout d'abord je dois vous expliquer l'absence de manchette la semaine dernière. J'ai été invité à donner une conférence sur la «chimie du chocolat» à l'Université de Floride à Jacksonville. Avoir l'occasion d'aller en Floride au mois de février… je ne me suis pas […]
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7:57 PM | New solder for semiconductors creates technological possibilities
Researchers worked out new chemistry for a broad class of compositions relevant to technologically important semiconductors.
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7:39 PM | A note/request on the "I Quit Graduate School in Chemistry" from Prof. Tehshik Yoon
An e-mail from someone I respect, Professor Tehshik Yoon, on this project: CJ and I exchanged a couple tweets of the other day, in which I expressed a bit of ambivalence about his #IQuitGradSchool project. Tweets, of course, are a terrible way to capture complicated feelings, so CJ reached out and offered me the opportunity to explain what I meant in a guest entry on his blog. So first of all, let me say that I essentially like the project.  What I like most about it is the same […]
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7:17 PM | Publication Summary: How Many Molecules Can Fit On the Surface of a Round Nanoparticle?
This post is part of our ongoing series of public-friendly summaries describing research articles that have been published by members of the Center for Sustainable Nanotechnology. Marco Torelli, a doctoral student at the University of Wisconsin – Madison, was the first author on this paper and collaborated on the study with CSN researchers at the University […]
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7:00 PM | Voltage tester for beating cardiac cells
For the first time, scientists have succeeded in recording the current in membrane channels of contracting cardiac cells. To do this, the scientists combined an atomic force microscope with a widely used method for measuring electrical signals in cells.
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6:53 PM | A rapid extension of graphene sheets from readily available hydrocarbons
Precisely controlled synthesis of structurally uniform carbon sheets could advance graphene materials science.
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6:48 PM | Novel crumpling method takes flat graphene from 2-D to 3-D
Researchers have developed a unique single-step process to achieve three-dimensional (3D) texturing of graphene and graphite. Using a commercially available thermally activated shape-memory polymer substrate, this 3D texturing, or 'crumpling', allows for increased surface area and opens the doors to expanded capabilities for electronics and biomaterials.
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6:09 PM | The Chemical Compounds Behind the Aroma of Coffee
Whether you’re a coffee connoisseur or completely unfussy about the manner in which you get your caffeine fix, there’s no denying that the smell of freshly-brewed coffee in the morning is an invigorating one. The chemistry behind this aroma, though, is far from simple; a complex collection of chemical compounds are responsible, and this graphic takes […]
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5:26 PM | Trian vs. DuPont - Round 3
Nelson Peltz and his Trian Partners Group is still dogging DuPont. Having lost the last round (when DuPont explicitly told him that no, he cannot be on the board of directors and that DuPont was going instead add 2 more of directors of their own choosing), Peltz is still hoping a proxy fight will get him the directorship he so craves. And just like what Daniel Loeb did when he was attacking Dow, Peltz now has his own website, dupontcanbegreat.com [*]. His nominees for 3 other director chairs […]
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4:12 PM | Insight into inner magnetic layers
Measurements have shown how spin filters forming within magnetic sandwiches influence tunnel magnetoresistance - results that can help in designing spintronic components.
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4:06 PM | Researchers test radiation-resistant spintronic material
Researchers are exploring new materials that could yield higher computational speeds and lower power consumption, even in harsh environments.
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4:03 PM | "E": "I met with my family and was overwhelmed with the support and relief."
Today's story on leaving graduate school is from "E"; it has been edited for clarity and privacy.Why did you leave? I came from a small undergrad school [in the South] and joined a medium sized grad school [in the Midwest] to do some synthetic organic research. My advisor was very hands-off and laid back, and didn't have me really working on anything until after my first year of classes were done. I began my initial research in my second year with the help of a [redacted] exchange student. […]
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4:03 PM | G: "I have never regretted the decision."
Our latest submission in "leaving graduate school in chemistry" is from "G"; it has been edited for privacy and clarity.Why did you leave? I left graduate school (organic chemistry) with a Master's degree after 3 full years.  I had been doing semi-successful research for nearly that entire time and received praise from my advisor for my research and laboratory technique.  I had passed all of my cumulative exams, and I was working at a top school. Leaving early was not an […]
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4:01 PM | Novel solid-state nanomaterial platform enables terahertz photonics
Scientists are pioneering the use of nanomaterials in compact, sensitive, fast, low-cost terahertz detectors with potential in applications such as biomedical diagnostics, airport security screening and high data-rate wireless communication.
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1:08 PM | European Commission publication takes in-depth look at nanomaterials' functionality
The latest 'Thematic Issue' publication explores recent developments in nanomaterials research, and possibilities for safe, practical and resource-efficient applications.
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1:01 PM | Aptamers and their applications in nanomedicine
To construct ligand-directed 'active targeting' nanobased delivery systems, aptamer-equipped nanomedicines have been tested for in vitro diagnosis, in vivo imaging, targeted cancer therapy, theranostic approaches, sub-cellular molecule detection, food safety, and environmental monitoring.
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12:43 PM | A giant increase in conductivity measured when a semiconductor is submitted to high pressure
Researchers obtain conductivity values for stroncium iridate 250 times higher than in normal conditions, just pressing with nanometric needles. The results where obtained thanks to the use of the atomic force microscope (AFM) showing that the material could become a good candidate for future applications in sensors and electronics.
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11:35 AM | Whitesides' Chemical Future
As part of the "Future of Chemistry" essays sponsored by BASF, professor George Whitesides opines in Angewandte Chemie Int'l Edition that chemistry must change in order to keep pace with societal demands and changing scientific landscapes. Familiar themes pepper his prose: the tension between "curiosity-driven" and "directed" research, between organizational behavior, motives, and rewards, and several pressing calls to action. After setting some ground rules and introducing us to […]
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11:34 AM | Label-free electrochemical immunosensor based on functionalized vertical nanowires
Scientists in Australia propose a label-free electrochemical immunosensor based on functionalized vertical nanowire by means of a current patch clamp amplifi er which has not been previously reported.
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11:22 AM | A new technique for making graphene competitor molybdenum disulfide
Researchers have made an advance in manufacturing molybdenum disulfide. By growing flakes of the material around 'seeds' of molybdenum oxide, they have made it easier to control the size, thickness and location of the material.
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10:35 AM | Improving energy efficiency one atom at a time
Molecular beam epitaxy systems enables scientists to control the properties of new crystals with exquisite precision, right down to the atomic level. They can grow nanomaterials with features just a few billionths of a meter across, and even control how many electrons they have inside them.
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10:29 AM | Improved fire detection with new ultra-sensitive, ultraviolet light nanowire sensor
Researchers manipulated zinc oxide, producing nanowires from this readily available material to create a ultra-violet light detector which is 10,000 times more sensitive to UV light than a traditional zinc oxide detector.
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10:04 AM | Quantum glue
Researchers suggest a way of enormously enhancing the van der Waals and Csimir forces - until they become a sort of 'quantum glue' holding atoms together.
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9:53 AM | Plasmonic nanocrystals for combined photothermal and photodynamic cancer therapies
An international team of researchers used abiotic assays, cultured cancer cells, and a melanoma animal model to demonstrate the photothermal therapy (PTT) activity of copper sulfide nanocrystals. The research lays out the working principle of colloidal, near-infrared light (NIR) plasmonic copper sulfide nanocrystals exploitable for both photodynamic therapy (PDT) and PTT therapy with NIR activation. This is the first report that under a NIR light radiation copper sulfide nanocrystals achieve […]
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8:39 AM | Industrial and Laboratory Methods to Prepare Toluene
Historically, toluene was produced from the by-product coke, but recently new methods include reformation of naphtha in the presence of a catalyst; and co-produced with pyrolysis gasoline in the steam cracking of liquid feeds. Less important industrial methods nowadays include via oil formed through carbonisation of coal and as a by-product in styrene production. In [...]
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5:48 AM | Ever played a mobile organic chemistry game? You might try "Chairs"
There aren't a lot of mobile organic chemistry games (or just chemistry games, something that we've covered here before), but Julie Winter's game "Chairs" is a fun example of one. You can download it here. She's looking for startup funding and has a chance to win some. If you've played the game, you might help her out by going to StartGarden (logging in via your Facebook account), and endorsing her game. Also, if you're enthusiastic about the possibility of mobile organic chemistry […]

February 16, 2015

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8:09 PM | Controlling car pollution at the nano level
Toyota research labs in Japan have reviewed research that might be leading the way towards a new generation of automotive catalytic converters.
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