A team of researchers, including Resnick Fellow Madeline Meier, have been investigating the use of light to direct the ordered growth of inorganic material with sub-micron resolution. The team has investigated the optical mechanism behind this spontaneous, ordered phototropic growth, showing that the self-organization of the material is directed by cooperative light scattering and absorption in the near-field. The results can be found in their recent paper, "Assessing Effects of Near-Field Synergistic Light Absorption on Ordered Inorganic Phototropic Growth."
We demonstrated spontaneous, ordered inorganic phototropic growth on wavelength length scales.
Significance and Impact
- Our study revealed the optical basis for emergent growth.
- We demonstrated that self-organization is directed by cooperative light scattering and synergistic absorption.
- Results might help direct the development of this technique for large-scale manufacturing of tailored materials
- We performed light directed electrochemical synthesis of semiconducting Se-Te with conformal illumination on a PMMA patterned substrate.
- Modeling was done to confirm the optical mechanism, using combined simulations of light absorption (FDTD) and growth (Monte Carlo).
Azhar I. Carim+, Madeline C. Meier+, Kathleen M. Kennedy, Matthias H. Richter, Kathryn R. Hamann and Nathan S. Lewis., Assessing Effects of Near-Field Synergistic Light Absorption on Ordered Inorganic Phototropic Growth, J. Am. Chem. Soc. 2021 143 (10), 3693 DOI: 10.1021/jacs.0c13085
Contact: Nate Lewis