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Electron Microscopy

All articles tagged with #electron microscopy

science-and-technology17 days ago•5 min saved

Bruker’s GAIA Microscope Set to Ship for Ultra-Cold Quantum Imaging

Bruker is set to ship its first scanning transmission electron microscope (STEM) capable of stable operation near absolute zero to three global labs by early 2027. Dubbed GAIA, the instrument uses liquid helium to cool samples to approximately 7 kelvin for over 30 hours, enabling atomic-resolution imaging of quantum materials. This breakthrough addresses decades-long challenges in cryogenic microscopy, where previous liquid helium attachments suffered from rapid evaporation and vibration-induced blurring. By integrating cooling directly into the microscope and adding aberration correction and a monochromator, GAIA allows researchers to observe material properties at ultra-low temperatures without the instability that previously limited data collection.

via Nature|

#bruker #cryogenics #electron-microscopy

science1 month ago•12 min saved

Second Fruit Fly Brain Connectome Complete, Paving Way for Neurobiology

Researchers completed the second complete connectome of a fruit fly brain: the male Drosophila connectome (≈150,000 neurons and >300 million synapses) was mapped over about four years using serial electron microscopy, AI-powered stitching and segmentation, and human proofreading in a Janelia–Google collaboration. It follows a female connectome finished earlier this year and should accelerate neurobiology research while enabling new insights into sex differences, including 289 male-specific neurons, 71 female-specific neurons, and 138 shared neurons wired differently.

via Ars Technica|

#connectome #drosophila #electron-microscopy

technology3 months ago•9 min saved

DIY SEM-to-TEM Converter Demonstrates Budget-Friendly Upgrade

A technical project shows how a scanning electron microscope can be converted into a transmission electron microscope using a custom, thinner sample plate and a reworked, space-saving sample holder to free clearance for the primary electron mirror and secondary-electron shield. By dialing in the mirror angle inside the evacuated chamber, the DIY adapter yields improved TEM imaging, with initial tests using gold nanoparticles and iterative shielding tweaks enhancing image quality—an approach that echoes other STEM-converter efforts and aims to later image biological cells while offering a cost-effective alternative to pricey commercial adapters.

via Hackaday|

#diy-adapter #electron-microscopy #scanning-electron-microscope

science4 months ago•24 min saved

Picometer-precision atom steering yields mesoscopic defect crystal in CrSBr

Researchers demonstrate deterministic atomic engineering inside CrSBr by steering Cr atoms with sub-20-pm accuracy to create a mesoscopic 3D defect crystal (~40,000 defects) within a 150×100×13 nm volume. The engineered lattice is stable at room temperature and opens routes for deterministic colour-centre placement, quantum simulations of many-body systems, and scalable atomic-scale manufacturing outside the microscope.

via Nature|

#defect-engineering #electron-microscopy #materials-science

science5 months ago•6 min saved

Lab Breakthrough Grows Dolomite, Solving a 200-Year Mineral Mystery

Scientists finally managed to grow dolomite in the lab after 32 straight failed attempts spanning two centuries. The breakthrough came from a hybrid approach that combined computational modeling of atomic arrangements with an in-situ technique that uses a pulsed electron beam to remove defects under fluctuating supersaturation. This enabled the controlled growth of about 300 dolomite layers (roughly 100 nanometers), solving the long-standing “dolomite problem” and potentially enabling dolomite-based advances in cement, batteries, semiconductors, and solar panels.

via Indian Defence Review|

#crystallography #dolomite #electron-microscopy

science5 months ago•7 min saved

Dolomite Mystery Cracked: Lab-Grown Crystals Form by Dissolving Defects

Researchers from the University of Michigan and Hokkaido University have solved the two-century Dolomite Problem by showing that dolomite growth is defect-limited and those defects can be dissolved away, mimicking natural weathering. Using atomic-scale simulations and pulsed electron-beam dissolution, they grew dolomite to about 100 nanometers (roughly 300 layers), a dramatic advance from previous attempts. This breakthrough not only explains dolomite abundance in ancient rocks but also offers a new approach to defect-free crystal growth for modern technologies like semiconductors, solar cells, and batteries.

via ScienceDaily|

#crystal-growth #dolomite #electron-microscopy

technology6 months ago•6 min saved

Ultra-tiny ceramic QR code could store data for centuries without power

Researchers etched a 1.98-square-micrometer QR code into a thin ceramic film, readable only with an electron microscope, demonstrating a durable, energy-free data storage method that could hold over 2 TB per A4 sheet for centuries or millennia and has earned a Guinness World Record.

via ScienceDaily|

#ceramic-materials #data-storage #electron-microscopy

science9 months ago•6 min saved

Scientists Discover Coffee as a Safer Staining Agent for Electron Microscopy

Researchers discovered that espresso coffee can effectively stain biological samples for electron microscopy, offering a safe, inexpensive, and non-toxic alternative to traditional heavy metal stains like uranyl acetate, with promising results in imaging zebrafish mitochondria, though further testing across different tissues is needed.

via PsyPost|

#biological-samples #coffee #electron-microscopy

science11 months ago•2 min saved

Over 97% of Electron Microscope Images Unpublished

A study reveals that over 97% of electron microscope images are not published, representing a vast, untapped resource for AI and scientific discovery. Experts suggest systematic archiving and sharing of these images could enhance research and accelerate new findings.

via Chemistry World|

#ai-training-resources #data-archiving #electron-microscopy

science1 year ago•1 min saved

DIY Calibration Target for Electron Microscopes

A DIY project describes creating a calibration target for electron microscopes by depositing gold nanoparticles on silicon slides, enabling precise calibration and repair of the microscope's resolution capabilities.

via Hackaday|

#calibration #diy #electron-microscopy

science1 year ago•6 min saved

New Study Challenges Traditional Views on Neuron Structure

A study using advanced electron microscopy reveals that axons, previously thought to be tube-like, have a "pearl-on-a-string" structure, termed "non-synaptic varicosities." This discovery, which may impact brain signaling and neurodegenerative disease research, shows that axon morphology is influenced by membrane mechanics, such as cholesterol levels. The findings challenge long-held beliefs about neuron structure and suggest potential revisions in biology textbooks.

via Neuroscience News|

#axon-structure #brain-signaling #electron-microscopy

physics2 years ago•4 min saved

"Chiral Electron Paths: A Twist in Physics Revolutionizing Technology"

Researchers in Germany have successfully sent single electrons along structured chiral paths, achieving chirality in electron matter waves without angular momentum. This work, which parallels earlier research with photons, could have significant applications in electron microscopy and the study of magnetic materials. However, some scientists are skeptical about the claim of chirality without angular momentum and the lack of citation of previous related work.

via physicsworld.com|

#angular-momentum #chirality #electron-microscopy

science-and-technology2 years ago•6 min saved

"Revolutionary Laser Technique Could Transform Future Technology"

Physicists at the University of Konstanz have discovered a method to imprint chirality onto electrons using laser light, creating chiral coils of mass and charge. This breakthrough has significant implications for quantum optics, particle physics, and electron microscopy, potentially leading to new scientific explorations and technological advancements.

via SciTechDaily|

#chirality #electron-microscopy #physics

science2 years ago•4 min saved

"Revealing the Origin of Life: Insights from the Winchcombe Meteorite"

Researchers have discovered pristine extraterrestrial organic molecules, including amino acids and nucleobases, inside the Winchcombe meteorite, shedding light on the potential contributions to the development of life on Earth. This marks a significant advancement in understanding the solar system's formation and the role of carbonaceous meteorites in delivering organic compounds to the early Earth. The findings, published in Nature Communications, were made possible through advanced electron microscopy analysis, providing unprecedented resolution and efficiency in analyzing extraterrestrial organic matter.

via SciTechDaily|

#early-earth #electron-microscopy #meteorite

science-and-technology2 years ago•5 min saved

"Revolutionizing Electron Microscopy: High-Resolution Imaging on a Budget"

Researchers at the University of Illinois Urbana-Champaign have demonstrated that record-breaking microscopic resolution can be achieved using electron ptychography on "conventional" transmission electron microscopes, breaking the trend of increasing microscope price with increasing resolution. This new technique, which uses computation to boost resolution, allows for deep sub-angstrom spatial resolution and rivals the highest ptychographic resolutions achieved with expensive aberration-corrected microscopes. The approach quadruples the resolution of conventional transmission electron microscopes and represents a significant paradigm shift in the field of electron microscopy.

via Phys.org|

#electron-microscopy #microscopy-revolution #ptychography