Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Attosecond electron wave packets produced during the interaction between strong optical fields and atoms provide rich information about the quantum states of their parent ions, in the form of scattered electrons or emitted photons that have attosecond temporal resolution and ångström spatial resolution.
Scientists in Japan struggled in the aftermath of a catastrophic earthquake, radiation problems and power cuts. Nevertheless, they have now largely recovered from the desperate situation.
India has long been active in the field of photonics, dating back to famous scientists such as Raman and Bose. Today, India is home to numerous research groups and telecommunications companies that own a sizeable amount of the fibre-optic links installed around the globe.
Using projected light patterns to form virtual electrodes on a photosensitive substrate, optoelectronic tweezers are able to grab and move micro- and nanoscale objects at will, facilitating applications far beyond biology and colloidal science.
Optical tweezers have become one of the primary weapons in the arsenal of biophysicists, and have revolutionized the new field of single-molecule biophysics. Today's techniques allow high-resolution experiments on biological macromolecules that were mere pipe dreams only a decade ago.
This year celebrates the twentieth anniversary of frequency-resolved optical gating — the first and most general technique for measuring ultrashort laser pulses.
