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Platinum nanoparticles shown to strongly enhance the efficacy of radiation therapy

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nanowerk.com -

Cancer treatment typically involves chemotherapy, radiotherapy, or surgery, and – depending on the stage of the disease – often is unsuccessful. The most common drawback of all conventional treatments is that they are very imprecise due to a lack of selectivity between malignant and healthy cells. In contrast, nanotechnology offers a vision for a new approach to fighting tumors: the ability of nanoparticle-based techniques to locate cancer cells and destroy them with single-cell more...

Added by Zunia to Nanotechnology for Development on March 13, 2010

How Can You ‘See’, ‘Feel’ or ‘Hear’ Something so Incredibly Tiny?

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rsc.org -

In 1981, the scanning tunneling microscope (STM) was invented, followed 4 years later by the atomic force microscope (AFM)—and that’s when nano-science and nanotechnology really started to take off. Various forms of scanning probe microscopes (SPM) based on these discoveries are essential for many areas of today’s research. Conventional optics cannot resolve objects measuring tens of nanometers or less because the visible wavelength of light is roughly between 400 and 750 nm. With scanning more...

Added by Zunia to Nanotechnology for Development on March 12, 2010

Nanotoxicology - mammalian and plant cells respond differently to fullerenes

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nanowerk.com -

Some scientists believe that, with the increased mass production of engineered nanoparticles like carbon nanotubes, there is a realistic chance for these particles to interact with water, soil and air, and subsequently enter the food chain. However, understanding the behavior and impacts of nanomaterials in the environment and in human health is a daunting task. Nevertheless, a general understanding about nanotoxicity is slowly emerging as the body of research on cytotoxicity, genotoxicity, and more...

Added by Zunia to Nanotechnology for Development on March 11, 2010

Non-Disruptive Imaging of Soft Biological Samples Using True Non-Contact AFM

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nanowerk.com -

Imaging soft biological samples in liquid with Atomic Force Microscope has long stood as a very challenging task. Until recently, most of the works in this field has been carried out in tapping mode AFM, during which the cantilever driven by a piezoelectric actuator vibrates in the vicinity of the cantilever's resonance frequency, and briefly touches the sample surface at the bottom of each vibration cycle, resulting in a decrease of its oscillation amplitude. By keeping such amplitude at a more...

Added by Zunia to Nanotechnology for Development on March 10, 2010

Photonic crystals allow the fabrication of miniaturized spectrometers

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nanowerk.com -

Spectrometers are used in materials analysis by measuring the absorption of light by a surface or chemical substance. These instruments measure properties of light over a specific portion of the electromagnetic spectrum. In conventional spectrometers, a diffraction grating splits the light source into several beams with different propagation directions according to the wavelength of the light. Thus, to achieve sufficient spatial separation for intensity measurements at a small slit, a long more...

Added by Zunia to Nanotechnology for Development on March 09, 2010

Powering nanotechnology devices with novel surface energy generators

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nanowerk.com -

Surface energy is ubiquitous in nature and it plays an important role in many scientific areas such as for instance surface physics, biophysics, surface chemistry, or catalysis. So far it has been impractical to consider utilizing surface energy as energy source because there are few molecules or atoms involved in the surface interaction and the density of surface energy is low. However, due to the lower power consumption requirements of nanotechnology devices and the higher specific surface more...

Added by Zunia to Nanotechnology for Development on March 07, 2010

What we know about engineered nanoparticles' health and environmental safety

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nanowerk.com -

In 2008, the Joint Research Centre, Institute for Health and Consumer Protection of the European Commission funded the project Engineered Nanoparticles: Review of Health and Environmental Safety (ENRHES). Last month, the ENRHES project released its final report. The overall aim of the ENRHES project was to perform a comprehensive and critical scientific review of the health and environmental safety of four classes of nanomaterials: fullerenes, carbon nanotubes, metals and metal oxides. The more...

Added by Zunia to Nanotechnology for Development on March 06, 2010

Smart capsules for water treatment with recyclable carbon nanotube cores

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nanowerk.com -

Among various nano-material candidates for water treatment, metal oxides have been widely used as removal agents for various heavy metal ions and their removal capacity was found to be relatively reliable. The removal mechanism for heavy metal ions is thought to be the formation of a strong bond between metal ions and metal oxide surfaces. This strong complexion is advantageous for complete removal of heavy metal ions but it presents a drawback if one wants to design a reusable agent by more...

Added by Zunia to Nanotechnology for Development on March 05, 2010

2nd NanoImpactNet Conference

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nanoimpactnet.eu -

The 2nd NanoImpactNet Conference will start with a 1-day training workshop for junio scientists followed by a 3-day conference. This training workshop is aimed at PhD-students, post-docs and early-career scientists and provides training on handling protocols, choices of control materials, dispersion procedures, and hazard evaluation procedures. The conference will be divided in 5 sessions:• Session 1: Interaction between nanomaterials and biological barriers • Session 2: Nanomaterial behavior more...

Added by Zunia to Nanotechnology for Development on March 03, 2010

Investigating solar cells with AFM and confocal microscopy

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nanowerk.com -

Solar cells, or photovoltaic cells, are used to convert sunlight into electrical power. As traditional power sources grow scarce, other forms of producing electrical power are gaining firm footing in the power supply mix. Solar cells are already widely used in a variety of applications - from spacecraft, to small portable devices, to farm installations, to roadway signs. As energy prices increase, public demand for solar power has surged. In order to meet the longevity, yield, and price more...

Added by Zunia to Nanotechnology for Development on March 03, 2010

The future of nanoelectronics - transistors without junctions

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nanowerk.com -

All existing transistors are based on junctions - obtained by changing the polarity of silicon from positive to negative. Researchers have now demonstrated a new type of transistor in which there are no junctions and no doping concentration gradients. The key to fabricating a junctionless gated resistor is the formation of a semiconductor layer that is thin and narrow enough to allow for full depletion of carriers when the device is turned off - something that was achieved by fabricating more...

Added by Zunia to Nanotechnology for Development on March 02, 2010

Exposure to nanomaterials in consumer products

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rivm.nl -

A report by the Dutch National Institute for Public Health and the Environment (RIVM) has highlighted suncare cosmetics, DIY coatings and adhesives, personal care products and cleaning products as high priority areas for research to determine consumer exposure to nanomaterials. Nanomaterials are developed and used in a wide variety of applications including consumer products because they have new specific properties that can improve the functionality of the product. There are already several more...

Added by Zunia to Nanotechnology for Development on March 01, 2010

Nanoscale Technology Strategy 2009-12

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innovateuk.org -

The strategy aims to make clear the way the Technology Strategy Board in the UK will support UK businesses to responsibly deliver market leading nanoscale technology solutions, channelled through high-value applications that help to solve society's greatest challenges. Its core objectives are to:1. Further develop knowledge transfer and collaboration in the emerging field of nanoscale technologies between academia and industry 2. Encourage collaboration with Research Councils 3. Work to more...

Added by Zunia to Nanotechnology for Development on March 01, 2010

UK Nanotechnology Health, Safety and Environment Directory 2009

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mnt.globalwatchonline.com -

The UK in recent years has been at the forefront of this Health, Safety and Environmental (HSE) debate internationally, tackling these issues as they relate to the successful commercialisation of products and services on the one hand and protecting the consumer and the environment on the other. As the debate matures and possible regulations and standards are considered, it is important that all the important players in the UK and their particular capabilities are highlighted. One of the more...

Added by Zunia to Nanotechnology for Development on February 28, 2010

Borrowing from nature's nanofabrication tricks – biomimetic crystallization nanolithography

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nanowerk.com -

Numerous research groups around the world are inspired by the biomineralization processes found in nature - the process by which living organisms produce inorganic materials (minerals) found in bones, teeth, or shells. In this process, the formation of the mineral is controlled with great precision by specialized organic biomolecules such as sugars and proteins. Whereas the fabrication of many man-made crystals requires elevated temperatures and strong chemical solutions, nature's organisms more...

Added by Zunia to Nanotechnology for Development on February 26, 2010

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