Warmer and wetter

One of the arguments put forward by global warming sceptics has just been dealt another blow. Some of those who question the claim that human activity is contributing to climate change have pointed out that the data show only an increase in global temperature. This, they argue, is not enough to prove that the change […]

Read More →
Drawing nanoscale features with heat

A team of scientists led by Georgia Tech physicist Elisa Riedo have developed a new lithographic technique for drawing nanoscale features on a surface in a variety of environments. In thermochemical nanolithography, an atomic force microscope (AFM) tip is heated and run over a thin polymer film, inducing a chemical reaction on its surface. This […]

Read More →
Simple, low-cost groove patterning for microchips

Engineers at Princeton University have developed a simple mechanical technique for creating periodic lines on microchips with separations of as little as 60 nm. Gratings of this size are useful in a number of optical, electronic and microfluidic devices. Traditional methods for creating micro- and nanoscale grooves include electron beam etching and interference lithography, but […]

Read More →
US plans on nanotech risk assessment criticised by experts

A US government plan to prioritise research into the potential environmental, health and safety impacts of engineered nanomaterials has been strongly criticised by experts at the Project on Emerging Nanotechnologies (PEN). Responding to a call for public comment on the government’s interim report, PEN director David Rejeski claims that the plan has so many failings […]

Read More →
Critical Pharmaceuticals puts the fizz into green chemistry

Many conventional methods for preparing drugs employ high temperatures and harsh solvents such as chloroform, benzene and other volatile organic compounds. Solvent residues often remain in the finished product, and these can be both toxic to the patient and environmentally damaging. They may also adversely affect drug performance. A UK-based biotech bionanotechnology spinoff from the […]

Read More →
Of what use is theology in ethical debates?

I ask this question in all seriousness as it is relevant to current discussions surrounding the ethics of nanotechnology. An EU-funded project is organising a number of summer schools next year on the subject of nano-ethics, with a view to developing new tools for e-learning. Coordinated by Ineke Malsch, a Dutch consultant specialising in technology […]

Read More →