Posts

November 27, 2014

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1:22 PM | Multilevel memory for consumer electronics
Researchers have developed a solution to increase the speed interaction between processor and memory in computers and other electronic devices.
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11:37 AM | The Ever-Changing Bruises
We’ve all had them. A bump in the corner of the table, a fall off a bike, a slip on the icy stairs…. Any bump or crash may result in a bruise, accompanied by its characteristic dark patch as blood released from capillaries is temporarily trapped under the skin. Bruises may be sore or even [...]
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6:24 AM | Gastronomía en el límite (VI): La yuca
Raíces de yuca | FuenteMandioca, tapioca, guacamota, aipí, boniato de las Antillas, quiscamote..., son varios de los nombres por los que es conocida la Manihot esculenta, la yuca, un tipo de arbusto de la familia de las euforbiáceas muy popular en las regiones de clima tropical en Sudamérica, África y el Pacífico. En España no se suele encontrar con facilidad aunque cada vez está más presente en los […]
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4:56 AM | 3D printed nanostructures made entirely of graphene
The successful implementation of graphene-based devices invariably requires the precise patterning of graphene sheets at both the micrometer and nanometer scale. Finding the ideal technique to achieve the desired graphene patterning remains a major challenge. Researchers have now demonstrated 3D printed nanostructures composed entirely of graphene using a new 3D printing technique. The method exploits a size-controllable liquid meniscus to fabricate 3D reduced graphene oxide nanowires.
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4:50 AM | Novel nanoformulation increases contrast of MRI
By producing this material, a common MRI medical substance with the ability of exterior cellular imaging has been converted into an interior cellular nano-contrast.

November 26, 2014

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9:25 PM | Molecular orbital calculations in the footsteps of Coulson
Today I ran a workshop for some of our final year Chemistry students with the dual aims of giving them experience of running the Gaussian code and repeating Coulson’s seminal calculations from 1937. Added to that I hope it helped them make some more sense of my lectures on SCF calculations! As a ‘lab’ exercise … Continue reading Molecular orbital calculations in the footsteps of Coulson →
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7:19 PM | Engineers invent high-tech mirror to beam heat away from buildings into space
A new ultrathin multilayered material can cool buildings without air conditioning by radiating warmth from inside the buildings into space while also reflecting sunlight to reduce incoming heat.
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5:51 PM | The mysterious 'action at a distance' between liquid containers
For several years, it has been known that superfluid helium housed in reservoirs located next to each other acts collectively, even when the channels connecting the reservoirs are too narrow and too long to allow for substantial flow. A new theoretical model reveals that the phenomenon of mysterious communication 'at a distance' between fluid reservoirs is much more common than previously thought.
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5:31 PM | Series of lectures on Wigner Monte Carlo methods
The Bulgarian Academy of Sciences has provided a series of short lectures on the Wigner formulation of quantum mechanics and its related Monte Carlo method based on signed particles.
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5:24 PM | Study details laser pulse effects on behavior of electrons
By solving a six-dimensional equation that had previously stymied researchers, physicists have pinpointed the characteristics of a laser pulse that yields electron behavior they can predict and essentially control.
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5:18 PM | Engineers make sound loud enough to bend light on a computer chip
Engineering researchers have developed a chip on which both sound wave and light wave are generated and confined together so that the sound can very efficiently control the light.
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5:14 PM | Shaping the future of energy storage with conductive clay (w/video)
In the race to find materials of ever increasing thinness, surface area and conductivity to make better performing battery electrodes, a lump of clay might have just taken the lead.
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4:35 PM | Paul Schleyer: Among the last of the universalists
I was saddened to hear of the passing of Paul Schleyer, not exactly a household name among non-chemists but someone who was undoubtedly one of the most prolific and towering chemists of his time. Schleyer started out in synthetic physical organic chemistry and then moved to computational and theoretical chemistry. Starting out at Princeton, he moved to Erlangen in Germany and finally settled down at the University of Georgia, helping to make each one of these centers a leading hub for […]
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4:28 PM | Happy Thanksgiving!
As always, I am incredibly thankful for my family, my friends, my community (physical and online) and my job. I am looking forward to celebrating Thanksgiving with my folks tomorrow.I am also incredibly thankful for you, my readers and commenters. Thank you for your reading, your advice, your e-mails and your brilliant, insightful comments. I am truly blessed.My family and I wish you a very happy Thanksgiving and if you're not in the United States, a happy Thursday and Friday! 
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4:22 PM | Popeye et les épinards
Les Manchettes scientifiques d’Ariel Fenster Qui ne connait pas l'histoire de Popeye le marin qui doit sa force aux épinards, un aliment riche en fer? Ce qui est fascinant dans cette histoire c'est qu'en fait elle est basée sur pas une, mais plusieurs idées fausses. […]
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4:11 PM | Plastics and Thanksgiving
Tomorrow is Thanksgiving Day here in the US and so it will be pretty quiet on the interwebs. Friday won't be much better as many people have that day off too. Last year at this time I blogged about the netting around turkeys and how much underappreciated that product is. If you didn't read it last year, I would suggest you take a look.This year, I'll keep it short and just mention that the American Chemical Council's blog has a great overview of how polyurethane is used in creating the giant […]
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4:04 PM | Weird job posting for Ottawa, ON: someone who knows stoichiometry
From @AlexFGoldberg:Lead Chemist  Vapor Candy, LLC - Ottawa, ON We are in the Electronic Cigarette Industry specializing in high quality nicotine based products, and are looking for a Canadian based chemist to help us set up operations in Ottawa. We are looking for someone who can help us with the logistics side of lab operations in Ottawa, as we are a new corporation in Canada. We have been very successful in the USA and are trying to expand the business. This position is […]
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3:24 PM | Warning Letter of the Week: Hey, this cheese isn't smoked!
I'm not aware of the extent of FDA's statutory powers, so I was amused to read this warning letter about smoked cheese:Misbranded Food1.    Your Smoked Horseradish Pasteurized Process Cheese Food, Smoked Habanero Pepper Pasteurized Process American Cheese with Habanero Peppers, and Smoked Cheddar Pasteurized Process Cheddar Cheese Food products are misbranded within the meaning of 403(a)(1) of the Act [21 U.S.C. § 343(a)(1)] in that the product labels are false and misleading. […]
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3:20 PM | Process Wednesday: (not so?) stinky burn at 200 gallon scale
Graphic adapted from Pesti and Anzalone [1]I happened upon a copy of "Asymmetric Catalysis on Industrial Scale" and rather enjoyed this passage in a chapter by Pesti and Anzalone [1]:Our first pilot plant run was designed to prepare 45 kg of thioester. As safety was particularly important with the use of mercaptans, our two reaction vessels (200- and 300-gallon glass-lined reactors) would be vented through a scrubber containing bleach and sodium hydroxide solution to control emissions. Another […]
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2:03 PM | Particles, waves and drunken sailors
Animals looking for food or light waves moving through turbid media - astonishing similarities have now been found between completely different phenomena.
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1:16 PM | Protons fuel graphene prospects
This discovery could revolutionise fuel cells and other hydrogen-based technologies as they require a barrier that only allow protons to pass through.
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11:28 AM | From a Microscope to a Nanoscope
The objective positioners of the series MIPOS, the mirror tilting system series PSH and the z-axis scanner PZ300AP CAP AP are great examples of the product range offered by piezosystem jena, that can be used for STED microscopy.
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11:01 AM | Protecting satellite electronics with reinforced carbon nanotube films
The space industry has a strong requirement to develop flexible electrostatic discharge protection layers for the exterior cover of satellites in order to protect the electronics of the spacecraft. A new study explores carbon nanotube-polyimide composite materials as a flexible alternative for the currently used indium tin oxide (ITO) coating, which is brittle and suffers from severe degradation of the electrical conductance due to fracture of the coating upon bending.
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10:34 AM | Graphene produces more efficient transport of a semiconducting polymer film
A new study shows that semiconducting polymers placed on a layer of graphene transports electrical charge more efficiently than when placed on a substrate of silicon.
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10:29 AM | Van der Waals force re-measured
Physicists verify nonlinear increase with growing molecular size.
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9:08 AM | 'Giant' charge density disturbances discovered in nanomaterials
Researchers have, with the help of computer simulations, discovered a combination of materials that strengthens the so-called Friedel oscillations and bundles them, as if with a lens, in different directions. With a range of 50 nanometers, these 'giant anisotropic charge density oscillations' are many times greater than normal and open up new possibilities in the field of nanoelectronics to exchange or filter magnetic information.
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6:23 AM | Picosun ALD Protects Printed Electronics
Picosun launches production scale roll-to-roll ALD system which is especially suitable for printed electronics applications.
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4:05 AM | The National Centre for Biotechnology Information (NCBI) is part...
The National Centre for Biotechnology Information (NCBI) is part of the National Institutes of Health’s National Library of Medicine, and most well-known for hosting Pubmed, the go-to search engine for biomedical literature - every (Medline-indexed) publication goes up there. On a separate but related note, one thing I’m constantly looking to do is get DOIs for papers on demand. Most recently I found a package for R, knitcitations that generates bibliographies automatically from […]

November 25, 2014

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8:38 PM | Researchers develop efficient method to produce nanoporous metals
Researchers have developed a cost-effective and more efficient way to manufacture nanoporous metals over many scales, from nanoscale to macroscale, which is visible to the naked eye.
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7:38 PM | The Chemistry of Asthma Inhalers
If you’re an asthma sufferer, you likely need at least one inhaler to keep your symptoms in check – or maybe even two different types. Commonly, those afflicted with asthma will have both a blue and a brown inhaler. Whilst the colours can vary, the purpose of the chemical compounds contained therein differ dependent on […]
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