Sentences with phrase «electron detectors»

Previous detectors — film or charge - coupled devices — were either labor - intensive or offered limited resolution, but the direct electron detector is better on both fronts.

«Cryo - EM has revolutionized structural biology, particularly in the last three years, with the invention of new kinds of electron detectors for the microscope,» says Michael Rossmann, a physicist and microbiologist at Purdue University in West Lafayette, Ind., and a coauthor of the Zika mapping study.

However, in 4D - STEM, the researchers use a high - speed electron detector to record where each electron scatters, from each scanned point.

At Cornell University, the Sol M. Gruner (SMG) detector group has developed and demonstrated a new type of imaging electron detector that records an image frame in 1/1000 of a second, and can detect from 1 to 1,000,000 electrons per pixel.

Within just the past three years, improvements in electron detector technology have yielded an explosion of high - resolution structures.

The facility is located at the Smith Research Building (South Campus) and houses a JEOL JEM - 1010 transmission electron microscope (TEM), a JEOL JSM - 5900 scanning electron microscope (SEM) equipped with a backscattered electron detector, a Bal - Tec Technotrade coating system, a Leica Ultramicrotome, a Leica Ultrostainer and other ancillary accessories needed to prepare samples for SEM and TEM.

EM technologies are advancing rapidly and, with the recent introduction of direct electron detectors, reaching a new level of maturity.

«Using a new type of electron detector — basically a super-fast, super-sensitive camera — we were able to measure the stretching of the materials from where it joined at the atomic scale to how the whole sheet fitted together, and do so with a precision better than one third of one percent of the distance between atoms.»

The second is a direct electron detector, which is even more sensitive than traditional camera film and can be used to capture movies of the nanoparticles as they spin around in solution.

«We actually don't have highly efficient light detectors, but electron detectors could be better.»

Graphene quantum dots vary with their size: Large dots form molecular - scale transistors, intermediate ones show quantum chaos, and the smallest act as single - electron detectors.

The introduction of a new generation of digital camera for electron microscopes, the so - called direct electron detectors, four years ago has enabled scientists to visualize the structure of proteins and determine the position of the atoms composing these proteins.

But a true breakthrough came in 2012 when a new toy — the direct electron detector — opened the gates, allowing for a flood of high - resolution cryo - EM structures.

«The direct electron detector has been the biggest game changer for the electron microscopy field,» says Melanie D. Ohi of Vanderbilt University.

Scanning - transmission electron microscopes irradiate the sample in a sequential raster pattern like scanning electron microscopes, but still form images from those electrons that are transmitted through the specimen (i.e., the electron detector is on the far side of the specimen, unlike the case for scanning electron microscopes).