Motion pictures from living cells

Research team improves superresolution microscopy

24-Sep-2019 - In order to observe cells at work, researchers have to bypass a physical law. One of the fastest techniques to overcome the resolution limit of classical light microscopy is high-resolution structured illumination microscopy. It makes visible details that are about a hundred nanometres in size. ...

Chip-based nanoscopy: Microscopy in HD quality

27-Apr-2017 - This information can be used to produce images with a resolution of about 20 to 30 nanometres, and thereby ten times that of conventional light microscopy. Until now, this method has required the use of expensive special instruments. Bielefeld University and the University of Tromsø have filed a ...

Starship Enterprise concept: Optical tractor beam traps bacteria

High resolution cell imaging

15-Dec-2016 - Up to now, if scientists wanted to study blood cells, algae, or bacteria under the microscope, they had to mount these cells on a substrate such as a glass slide. Physicists at Bielefeld and Frankfurt Universities have developed a method that traps biological cells with a laser beam enabling them ...

Trapping and watching motile cells

A new approach enables rapid characterization of living suspension cells in 4 dimensions

01-Apr-2015 - Optical imaging of highly motile cells or cells in suspension, such as bacterial systems, yeast cells, and immune cells, is a challenging task, in many cases it is just not possible. The human immunodeficiency virus (HIV), for example, can spread very efficiently from an infected T cell to an ...

Cooling with molecules

Researchers at the universities in Bielefeld, Manchester, and Zaragoza present low-temperature experiment in Nature Communications

24-Oct-2014 - An international team of scientists have become the first ever researchers to successfully reach temperatures below minus 272.15 degrees Celsius – only just above absolute zero – using magnetic molecules. The physicists and chemists are presenting their new investigation in Nature ...

High-tech microscope measures electron oscillations

22-Aug-2011 - Researchers from Bielefeld, Kaiserslautern and Würzburg have developed a novel high-tech microscope: It magnifies objects a million times and shows movements with a retardation of one million billion times. The new technology allows tracking extremely fast processes in miniature objects – with an ...

Building with pentagons

02-Jun-2009 - Achim Müller and co-workers from Bielefeld University and Marshall Luban with his co-workers from the Departments of Physics and Astronomy at both Francis Marion University and Iowa State University worked on synthesising a Keplerate using pentagonal tungsten-oxide based units and studied its ...

Towards mimicking metalloenzymes

16-Apr-2009 - Scientists in Germany and the US generate highly oxidised diiron complexes that further our understanding on metalloenzymes in nature. Oxidised diiron species are used in nature in the active sites of several metalloenzymes, such as methane monooxygenase and ribonucleotide reductase. Methane ...