Chiral Phase Change Nanomaterials
9 affiliations
- 1Department of Electrical and Computer Engineering Morgan State University Baltimore Maryland USA
- 2Department of Electro‐Optics and Photonics University of Dayton Dayton Ohio USA
- 3School of Engineering Brown University Providence Rhode Island USA
- 4Department of Electrical & Computer Engineering University of Illinois Chicago Illinois USA
- 5KBR Beavercreak Ohio USA
- 6Department of Physics University of Dayton Dayton Ohio USA
- 7Center for Nanoscale Systems Harvard University Cambridge Massachusetts USA
- 8Apex Microdevices LLC West Chester Ohio USA
- 9Sensors Directorate Air Force Research Laboratory Wright‐Patterson AFB Ohio USA
Abstract
Active chiral nanomaterials are dynamic photonic materials offering unprecedented opportunities for high‐speed temporal control of chiral light‐matter interactions. However, demonstrating dynamic solid‐state chiral platforms remains challenging in the UV/VIS regime. By amalgamating the unique characteristics of geometric chirality and the non‐volatile phase change phenomena, chiral phase change nanomaterials hold great promise for energy‐efficient applications in reconfigurable optoelectronics, bio‐photonics, and information storage technologies. In this work, we reveal a bottom‐up, wafer‐scale fabrication technique for (GST) with a high degree of nanoscale control in three spatial dimensions, yielding densely packed phase change nanomaterials featuring 15 nm cross‐sectional diameters. We demonstrate tunable circular birefringence and dichorism, corroborated by a numerical model, explaining the origin of chiro‐optical effects observed in the material plasmonic regime. Furthermore, the GST nano‐helices exhibit over 50K reversible cycles using a repeated sequence of four 4 crystallization pulses and a singular 400 ns pulse for amorphization, enabling temporal manipulation of the chiro‐optical response maximally at 410 nm. Our work not only achieves the critical goal of wafer‐scale nano‐engineering of chiral chalcogenide phase change materials but also reversible optical actuation with low programming fluence, long cycling endurance, and fast switching.
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BibTeX
@article{burrow2026chiral,
title = {{Chiral Phase Change Nanomaterials}},
author = {Joshua A. Burrow and Md Shah Alam and Riad Yahiaoui and Evan M. Smith and Ryan P. Laing and Jules Gardener and Thomas A. Searles and Piyush Shah and Shivashankar Vangala and Joshua R. Hendrickson and Andrew M. Sarangan and Imad H. Agha},
journal = {Advanced Functional Materials},
year = {2026},
month = jun,
doi = {10.1002/adfm.76202},
url = {https://doi.org/10.1002/adfm.76202},
note = {CC BY},
}
RIS
TY - JOUR
TI - Chiral Phase Change Nanomaterials
AU - Joshua A. Burrow
AU - Md Shah Alam
AU - Riad Yahiaoui
AU - Evan M. Smith
AU - Ryan P. Laing
AU - Jules Gardener
AU - Thomas A. Searles
AU - Piyush Shah
AU - Shivashankar Vangala
AU - Joshua R. Hendrickson
AU - Andrew M. Sarangan
AU - Imad H. Agha
PY - 2026
DA - 2026/06/09
JO - Advanced Functional Materials
DO - 10.1002/adfm.76202
UR - https://doi.org/10.1002/adfm.76202
AB - Active chiral nanomaterials are dynamic photonic materials offering unprecedented opportunities for high‐speed temporal control of chiral light‐matter interactions. However, demonstrating dynamic solid‐state chiral platforms remains challenging in the UV/VIS regime. By amalgamating the unique characteristics of geometric chirality and the non‐volatile phase change phenomena, chiral phase change nanomaterials hold great promise for energy‐efficient applications in reconfigurable optoelectronics, bio‐photonics, and information storage technologies. In this work, we reveal a bottom‐up, wafer‐scale fabrication technique for (GST) with a high degree of nanoscale control in three spatial dimensions, yielding densely packed phase change nanomaterials featuring 15 nm cross‐sectional diameters. We demonstrate tunable circular birefringence and dichorism, corroborated by a numerical model, explaining the origin of chiro‐optical effects observed in the material plasmonic regime. Furthermore, the GST nano‐helices exhibit over 50K reversible cycles using a repeated sequence of four 4 crystallization pulses and a singular 400 ns pulse for amorphization, enabling temporal manipulation of the chiro‐optical response maximally at 410 nm. Our work not only achieves the critical goal of wafer‐scale nano‐engineering of chiral chalcogenide phase change materials but also reversible optical actuation with low programming fluence, long cycling endurance, and fast switching.
SN - 1616-301X
SN - 1616-3028
ER -