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Updated: Jan 6, 2026

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Published on: December 9, 2010

Imaging material functionality through three-dimensional nanoscale tracking of energy flow.

Milan Delor^1,2,3, Hannah L Weaver^2,4, QinQin Yu⁴

¹Department of Chemistry, University of California Berkeley, Berkeley, CA, USA.

Nature Materials

|October 9, 2019

Summary

Researchers developed a new optical method to track energy carriers like excitons and heat in materials. This technique reveals how material structure impacts energy flow, aiding in designing better semiconductors.

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Last Updated: Jan 6, 2026

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Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles

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Published on: July 5, 2016

Area of Science:

Materials Science
Condensed Matter Physics
Physical Chemistry

Background:

Energy carrier transport is fundamental to material and biochemical functions.
Observing energy flow requires ultrasmall and ultrafast spatio-temporal resolution.
Material morphology and disorder significantly influence energy carrier pathways.

Purpose of the Study:

To develop a non-invasive optical scheme for tracking energy carriers in four dimensions (spacetime).
To correlate energy carrier distributions with material morphology at nanometre precision.
To elucidate the impact of disorder on energy flow in semiconductors.

Main Methods:

Utilized non-resonant interferometric scattering to detect minute changes in material polarizability.
Developed a four-dimensional spatio-temporal mapping technique for energy carriers.
Applied the method to polyacene, silicon, and perovskite semiconductors.

Main Results:

Visualized exciton, charge, and heat transport in various semiconductor materials.
Demonstrated that morphological boundaries in perovskites exhibit depth-dependent resistivity, impeding lateral transport.
Quantified the influence of structural disorder on energy flow dynamics.

Conclusions:

The developed optical scheme enables precise, non-invasive tracking of energy carriers.
Material morphology critically dictates energy transport pathways and efficiency.
Strategies for interpreting energy transport in disordered systems can guide the design of defect-tolerant materials for advanced semiconductor applications.