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Culturing, Freezing, Processing, and Imaging of Entire Organoids and Spheroids While Still in a Hydrogel

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Published on: December 23, 2022

Cryogenically self-healing organic crystals.

Chengde Ding¹, Baolei Tang¹, Yuxing Zhou¹

¹State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, P. R. China.

Nature Materials

|December 5, 2025

Summary

This summary is machine-generated.

This study introduces a novel molecular crystal capable of self-healing at cryogenic temperatures (77 K). This breakthrough in material science enables autonomous repair in extreme conditions, overcoming previous limitations.

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Area of Science:

Materials Science
Crystallography
Chemical Engineering

Background:

Conventional self-healing materials rely on diffusion-limited chemical processes.
These diffusion mechanisms are typically inhibited by cryogenic temperatures, limiting applications in extreme cold environments.

Purpose of the Study:

To report a molecular crystal with autonomous self-healing capabilities at ambient, high, and cryogenic temperatures.
To investigate the underlying mechanism driving cryogenic self-healing.
To demonstrate the potential of such materials in optical systems.

Main Methods:

Synthesis and characterization of a novel molecular crystal.
Testing self-healing efficiency at various temperatures (77 K, 298 K, 423 K).
Utilizing optical transmission measurements to quantify healing effectiveness.

Main Results:

The molecular crystal demonstrated autonomous self-healing at 77 K, 298 K, and 423 K.
Dipole-dipole interactions were identified as the primary mechanism for interface recovery at cryogenic temperatures.
Healed crystals exhibited approximately 99% optical transparency, indicating efficient recovery from damage.

Conclusions:

This research presents a significant advancement in self-healing materials, particularly for cryogenic applications.
The developed material enables the design of autonomously reparative crystalline optical systems.
This work overcomes limitations of traditional self-healing media, paving the way for materials with indefinite operational capabilities under extreme conditions.