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Scitizen NanoScience



NanoScience : a collaborative news publishing initiative by scientists, for everyone.



Copyright: Copyright 2008, Take part Media, Inc.
 



Nano-capacitors: the root towards the super power battery

2009-08-20 10:50:26

Nanostructured devices have the potential to serve as the basis for next-generation energy systems that make use of densely packed interfaces and thin films. Researchers have developed metal-insulator-metal nano-capacitors. It is possible to accommodate one million such tiny capacitors on one square...



Nanoparticles come at the top of occupational chemical risks

2009-04-22 21:10:09

It is estimated that each year there are 74,000 work-related deaths linked to hazardous substances encountered in the workplace. A report by the European Agency for Safety and Health at Work (EU-OSHA) ? called Expert Forecast on Emerging Chemical Risks - established by 49 experts across Europe,...



Future War Revisited

2008-11-21 11:18:44

Think of a futuristic war scenario where soldiers are firing smart weapons from the confines of their command centres. Weapons that are capable of intercepting and destroying virtually all enemy attack weapons and yet, they are fired from unmanned vehicles thereby minimising all possibilities of human...



Nanotechnology's True Potential

2008-11-14 11:14:47

It is disappointing to still find articles like this one in the UK Independent that are short-sighted and actually misleading about nanotechnology:



Reinventing optical microscopy with nanotubes

2008-10-31 10:53:19

Nanotube have a diameter two orders of magnitude smaller and about one order of magnitude longer than the size of the focal spot of the microscope. This makes nanotubes an ideal nanoscale system to probe the focal spot. We find that optical spectra recorded from nano sized objects depend on their location...



Ups and Downs

2008-09-29 11:43:22

Going up? Japan is looking at getting into the space elevator business. If they are truly serious about it, I would not bet against them achieving success before anyone else.



Neural Nanomachines

2008-09-15 16:43:58

Earlier today, we posted an announcement about substantial new research grants available from the European Research Council. Meanwhile, on this side of the pond, we get news of an interesting project being funded by the US National Institutes of Health to build "neural nanomachines."



It's 10 p.m. Do You Know Where Dad Is?

2008-05-09 11:59:12

Barry Steinhart and Richard Atkinson debate tagging their father with a nanoscale tracking device to ensure his safety. The Power of Small panel discusses the how nanoscale tracking devices can be used in society and the implications of tracking human whereabouts with new technology...



Power of Small: Introduction to Nanotechnology

2008-05-09 11:59:07

How will nanotechnology change the world? Nanotechnology is a rapidly moving and all-encompassing suite of technologies that promises to change almost every aspect of our lives, from our health to our security to our ability to create a sustainable environment. As part of a multi-component project...



Rows of atoms: watching missing atoms with electrons

2008-02-25 12:50:46

While electron microscopes are available for more than 70 years, they have been recently significantly improved. The use of aberration correctors improved considerably resolution capabilities of electron microscopes and makes imaging of lighter atoms and vacancies possible...



Nanovalve Material Captures and Stores Gases

2008-02-20 12:37:20

In a different approach to gas storage, a Ph.D. student, Brett Chandler and two professors, George Shimizu and David Cramb, at University of Calgary along with the Functional Materials group at the National Research Council of Canada have developed a new material that has the ability to capture gas from...



Challenges in Making Superstrong Materials Based on Carbon Nanotubes

2008-01-28 22:07:00

Thinking of carbon nanotube (CNT) composites, one might expect superstrong materials. But a closer look at the steep challenges to improve the mechanical properties of CNT composites shows, that other applications such as electromagnetic shielding,...



Action on Surfaces: Moving Molecules and Nano Particles on Surfaces

2007-12-28 14:13:40

To build devices at molecular scale, we need to control the position, orientation and movement of individual molecules on surfaces. Surfaces have been studied in great detail over several decades using ultra-high vacuum environment, scanning probe microscopy and a variety of spectroscopic techniques...



A Theorist's Pencil and One Layer of Carbon Atoms, Graphene

2007-11-26 14:45:34

Graphite consists of layers of atoms arranged in a honeycomb lattice. A single layer of carbon atoms, called graphene has unique electronic properties. Graphene can be used to make a bipolar transistor and is a model system for relativistic two state quantum systems...



Quantum Cascade Laser Nanoantenna

2007-11-21 10:54:48

Imaging techniques with high spatial resolution in the mid-infrared region of the optical spectrum (wavelength ranging from 3 microns to 25 microns) have always been attractive and desirable because the characteristic absorption peaks of most chemicals, known as ?fingerprints? ,...



Nano particles, medicine and heat conduction

2007-10-23 11:10:06

Metal nano particles have a particularly large optical cross-section that can be used in high resolution imaging and treating cancer. Heat transport, which depends on the propagation of electrons and phonons, is strongly modified by both the size of the nano particle and the distance between nano particles...



Nanotechnology Researchers at Northwestern University Revolutionize Drug Delivery with Advanced Nanomaterials

2007-10-22 10:09:02

Nanodiamonds, a revolutionary class of nanomaterials, are 2 nanometers in diameter in single-particle form, and can be manipulated to form clusters with diameters in the 50-100nm range. This makes them ideal for drug delivery by shielding and slow releasing drugs trapped within the cluster of Diamond...



Nanotechnology: 2007 Nobel Prize for Physics

2007-10-11 15:14:40

Drs. Albert Fert (France) and Peter Gr?nberg (Germany) were announced as the recipients of the 2007 Nobel Prize for Physics for their discovery of "giant magnetoresistance". Affecting our daily lives, their research has allowed the dramatic miniaturization and digitalization of hard drives...



Three Good Reasons to Do Nanotechnology: 1. For a Sustainable Energy Economy

2007-09-20 12:57:29

When I was in Norway a few months ago, I was talking to an official from their research council about the Norwegian national nanotechnology strategy. He explained how they were going to focus on a few appplication areas for nanotechnology, starting with nanotechnology for energy,...



Gutenberg and New Top-Down Tools: Learning How to Make Things Small

2007-09-18 13:44:42

Projection lithography (photo lithography) is the preferred top-down tool for device fabrication. Projection lithography has been highly successful during the last thirty years, but improving projection lithography at scales smaller than 100nm has become increasingly difficult...



Silicon Nanoparticles Enhance Performance of Solar Cells

2007-09-04 14:15:46

Semiconductor fluorescent nanomaterial may find applications in photovoltaic (PV) solar cell technology through the development of cells based entirely on the nanomaterial or in combination with existing technology. Efficiency improvement or expansions of operating spectral range toward the ultra-violet/blue...



Assembling Nanoparticles on Liquid Interfaces Leads to Fascinating New Materials

2007-08-30 14:46:22

Stefan A. F. Bon discusses how you can use liquid-liquid interfaces as a tool to assemble nanoparticles into larger structures. His group is looking at the fabrication of these complex supracolloidal structures using a combination of interface-driven assembly of particles and macromolecular (plastic/polymer)...



Nanotechnology Helps Scientists Make Bendy Sensors for Hydrogen Vehicles

2007-08-16 11:51:41

Flexible hydrogen sensors and sensor arrays (i.e., sensory skins) can be used in a wide of range of systems which require demanding low cost, large area, light weight, mechanical flexibility and mechanical shock resistance.



New Research Explores Making Electrical Contact with Nanotubes

2007-08-14 11:26:30

With walls that can be just one atom thick, carbon nanotubes promise to enable technology that??s smaller, faster and more energy efficient than seems possible with today??s semiconductors.



Agriculture and Food Workers Challenge Nanotechnologies

2007-08-09 12:10:38

We analize the first declaration issued at a continental level by a federation of trade unions on nanotechnologies. In March, 2007, the 25th Congress of the IUF was held in Geneva. The resolution on nanotechnologies was approved, with impact to 122 countries and over 12,000,000 workers...



Can Semiconductors Operate Like a Human Cell?

2007-08-03 10:59:26

Semiconductor membranes made of two thin layers of opposite n- and p-doping can perform electrically tunable ion current rectification and filtering in a nanopore, which are fundamental functions of biological membranes surrounding human cells.



Bio-inspired Super-strong Carbon Materials

2007-08-02 14:08:08

Our work in the July 26, 2007 issue of Nature demonstrates a materials platform that can be further tuned through chemistry to perhaps yield super-strong but lightweight structures with many applications. Structures in living systems offer us ?bio-inspiration?, and with that in hand,...



Impact of Fullerene (C60) on Organisms in the Soil

2007-08-01 10:18:00

The paper, Impact of Fullerene (C60) on a Soil Microbial Community*, reports the effects of the carbon-based nano-scale material, fullerenes, on living organisms in the soil. This work is particularly important because of the lack of published research on the environmental effects of nanomaterials.



Targeting and Detecting Cancer Cells Using Nanoparticles

2007-07-23 14:26:50

Current cancer therapy always experiences non-specific killing of healthy cells, thus the therapeutic efficiency is extremely low. Development of a nanoparticle system that can specifically target, detect, and kill cancer cells remains a great challenge.



Gold Nanoglue

2007-07-19 10:59:53

At the nanoscale - the order of billionths of a meter, materials exhibit unique optical, electronic, and magnetic properties not seen at the bulk scale. The combination of these unique properties with proteins and macromolecules found throughout cells and their biological components has motivated the...