Related topics: cells · cancer cells · protein

How to construct a protein factory

Cells consist of a multitude of molecular structures, some of them exhibiting a staggering complexity. Ribosomes, the protein factories of the cell, belong to the biggest and most sophisticated complexes and are made up of ...

These pink sea urchins have teeth that sharpen themselves

Sea urchins have five teeth, each held by a separate jaw in a circular arrangement at the center of their spiked, spherical bodies. Now, researchers reporting in the journal Matter on September 18 have discovered how the ...

Creating new opportunities from nanoscale materials

A hundred years ago, "2d" meant a two-penny, or 1-inch, nail. Today, "2-D" encompasses a broad range of atomically thin flat materials, many with exotic properties not found in the bulk equivalents of the same materials, ...

Opening the hatch to heal the break

LMU researchers have determined the structure of a key enzyme complex that is involved in DNA repair, and traced the cycle of conformational changes that it undergoes while performing its biochemical function.

Mapping nucleation kinetics with nanometer resolution

Nucleation is the formation of a new condensed phase from a fluid phase via self-assembly. This process is critical to many natural systems and technical applications including the manufacturing of pharmaceuticals and advanced ...

How do atoms vibrate in graphene nanostructures?

In order to understand advanced materials like graphene nanostructures and optimize them for devices in nano-, opto- and quantum-technology it is crucial to understand how phonons—the vibration of atoms in solids—influence ...

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Electron microscope

An electron microscope is a type of microscope that uses a particle beam of electrons to illuminate a specimen and create a highly-magnified image. Electron microscopes have much greater resolving power than light microscopes that use electromagnetic radiation and can obtain much higher magnifications of up to 2 million times, while the best light microscopes are limited to magnifications of 2000 times. Both electron and light microscopes have resolution limitations, imposed by the wavelength of the radiation they use. The greater resolution and magnification of the electron microscope is because the wavelength of an electron; its de Broglie wavelength is much smaller than that of a photon of visible light.

The electron microscope uses electrostatic and electromagnetic lenses in forming the image by controlling the electron beam to focus it at a specific plane relative to the specimen. This manner is similar to how a light microscope uses glass lenses to focus light on or through a specimen to form an image.

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