Gatan K2

The Gatan K2 is a direct electron detector camera designed to enhance the capabilities of transmission electron microscopy (TEM) in structural biology and materials science. Introduced in 2014, this camera has been instrumental in achieving sub-3 Ångström resolution in cryo-electron microscopy (cryo-EM), enabling detailed atomic-scale imaging of biological macromolecules.

Key features include:

• Electron Counting Mode: Utilises electron counting to record high-resolution images with minimal noise, surpassing traditional detectors.

• High Frame Rates: Capable of capturing up to 1,600 frames per second, facilitating rapid data acquisition essential for time-sensitive experiments.

• Enhanced Detective Quantum Efficiency (DQE): Offers superior DQE, improving signal-to-noise ratios and enabling clearer imaging of radiation-sensitive samples.

• Compatibility with Energy Filters: Integrates seamlessly with Gatan's energy filters, allowing for energy-filtered TEM imaging and electron energy loss spectroscopy (EELS).

The Gatan K2 has been widely adopted in fields such as structural biology, materials science, and biotechnology. Its applications include:

• Cryo-EM: Determining high-resolution structures of proteins and viruses, crucial for drug discovery and vaccine development.

• Materials Characterisation: Investigating the atomic structure and composition of advanced materials.

• Biotechnology Research: Facilitating studies in molecular diagnostics and biomanufacturing processes.

Commonly utilised in university laboratories, biomedical research centres, and pharmaceutical companies, the Gatan K2 has been a pivotal tool in advancing scientific understanding. While newer models like the Gatan K3 have since been introduced, the K2 remains relevant in many research settings due to its robust performance and reliability.