Nauka - najnowsze artykuły

  • 19.10.2013
    Naukowcy z ETH w Zurychu i Lawrence Livermore National Laboratory (LLNL) w Kalifornii opracowali innowacyjny czujnik do spektroskopii ramanowskiej ze wzmocnieniem powierzchniowym (SERS). Umożliwia on wykrycie cząsteczek obecnych w najmniejszych stężeniach. Wykorzystując nanorurk iwęglowe, zespół naukowców prowadzony przez...
  • 19.10.2013
    A team of scientists around Prof. Theodor W. Hänsch and Dr. Nathalie Picqué at the Laser Spectroscopy Division of the Max Planck Institute of Quantum Optics (Garching), in a collaboration with the Ludwig-Maximilians-Universität Munich and the Institut des Sciences Moléculaires d’Orsay (France) now report on a new...
  • 23.09.2013
    Optical imaging of nanoscale objects, whether it is based on scattering or fluorescence, is a challenging task due to reduced detection signal-to-noise-ratio and contrast at sub-wavelength dimensions. While advances in light microscopy have led to techniques that can image individual nanoparticles, these methods rely on relatively sophisticated...
  • 23.09.2013
    At at a meeting of infectious disease experts in early 2012, the Director General of the World Health Organization (WHO), Dr Margaret Chan, has warned vividly that the growing threat of antibiotic-resistant bacteria may pose grave risks for society: "A post-antibiotic era means, in effect, an end to modern medicine as we know it. Things as...
  • 16.08.2013
    Semiconductor fabs are large, complex industrial sites with costs for a single facility approaching $10B. In this article we discuss the possibility of putting the entire functionality of such a fab onto a single silicon chip. We demonstrate a path forward where, for certain applications, especially at the nanometer scale, one might consider...
  • 16.08.2013
    Life cycle assessments are essential tools for ensuring the safe, responsible, and sustainable commercialization of a new technology. Such an assessment takes a cradle-to-grave look at the health and environmental impact of a material, chemical, or product. With missing data about the large scale impact of nanotechnology, life cycle...
  • 16.08.2013
    Not counting the sometimes alarmist reports from environmental and consumer groups (see for instance: "Groups file legal action for EPA to stop sale of 200+ nanosilver products"), the ongoing discussion among scientists about the potential environmental and health effects caused by silver nanoparticles in consumer products ranges from...
  • 25.07.2013
    The silicon chip took over forty years to approach a $300 billion business today. A new form of electronics – printed electronics – will hit that figure in half the time because, unlike the silicon chip, it subsumes electrics such as lighting, batteries, solar cells and heaters, not just electronics. It is usually achieved by...
  • 24.07.2013
    When nanoparticles enter the human body, for instance as part of a nanomedicine application, they come into immediate contact with a collection of biomolecules, such as proteins, that are characteristic of that environment, e.g. blood. A protein may become associated with the nanomaterial surface during a protein-nanomaterial interaction, in a...
  • 24.07.2013
    A space elevator based on carbon nanotube (CNT) cables is one of those ideas from 1950s-style futurism that are so whacky they might just work. There is an annual Space Elevator Conference to discuss progress and a Japanese construction firm even has announced plans to build a space elevator by 2050. These plans mostly depend on carbon nanotubes...