arXiv:2509.12475
Liquid Helium Cryogenic TEM below 1 Å
Demonstrates sub-angstrom atomic imaging at specimen temperatures down to about 20 K, with low stage drift and stable hold times.
Atomic imaging with liquid helium cooling
Below 1 Å
information transfer at ~20 K
Sub-25 K
base temperature
±2 mK
thermal stability
Manuscripts
arXiv:2603.10892
Helium-Cooled Cryogenic STEM Imaging and Ptychography
Atomic-scale STEM and ptychography for low-temperature phases.
Read manuscriptarXiv:2509.24969
Nanoscale Polar Landscapes in Quantum Paraelectric SrTiO3
Cryogenic STEM down to 20 K reveals nanoscale polar domains in SrTiO3.
Read manuscriptarXiv:2509.16730
Melting point depression of charge density wave in 1T-TiSe2 due to size effects
In situ cryogenic electron microscopy down to 20 K observing size-dependent CDW nucleation and melting in nanoflake 1T-TiSe2.
Read manuscriptPNAS 2025
Ultracold cryogenic TEM with liquid helium and high stability
Modern TEM with liquid helium cooling and multi-day stability.
Read ManuscriptarXiv:2509.12475
Liquid Helium Cryogenic TEM below 1 Å
Sub-angstrom atomic imaging at ultracold sample temperatures.
Read manuscriptStay Cold with Multi-Day Stability
New atomic-resolution data
SrTiO3 membrane at 40 K
The new result shows 0.77 Å information transfer with a direct-space lattice image, FFT, and magnified atomic inset.
Temperature stability
Precise Temperatures
Temperature feedback control maintains millikelvin-scale stability over many hours, supporting long acquisitions and low drift at ultracold specimen temperatures.
Modern TEM with liquid helium
The holder combines continuous liquid helium flow, vibration decoupling, and temperature feedback control to enable high-resolution imaging at ultracold sample temperatures. Lower temperatures can improve beam and dose resilience for sensitive specimens and provide access to emergent electronic phases in quantum materials.
Multi-day stability
Continuous liquid helium flow supports stable ultra-cold operation over extended experiments.
Low drift and vibration damping
Preserves mechanical stability needed for sub-angstrom information transfer.
Feedback temperature control
Study phase transitions from 20 K to room temperature with controlled temperature sweeps.
Compatibility across platforms
The flexible and modular design enables cross-platform compatibility. Turn the microscope you already have into a liquid-helium capable instrument.
The Team
Maya Gates, Robert Hovden, Ismail El Baggari, Emily Rennich, and Mike Blaney bring deep expertise in ultra-cold cryogenic electron microscopy for probing next-generation materials and devices at the atomic scale.
Partners
