3D-architected gratings for polarization-sensitive, nature-inspired structural color DOI Creative Commons

Mauricio Miranda,

Lars Osterberg,

Dev Narayan Shah

et al.

Nanophotonics, Journal Year: 2025, Volume and Issue: 14(5), P. 547 - 558

Published: March 1, 2025

Abstract Structural coloration, a color-generation mechanism often found in nature, arises from light–matter interactions such as diffraction, interference, and scattering, with micro- nanostructured elements. Herein, we systematically study anisotropic, 3D-architected grating structures polarization-tunable optical properties, inspired by the vivid blue of Morpho butterfly wings. Using two-photon lithography, fabricate multilayered gratings, varying parameters height (through scanning speed laser power), periodicity, number layers. In transmission, significant color transitions to brown were identified when structural incident light polarization conditions (azimuthal angle ellipticity). Based on thin film diffraction efficiency theory Raman–Nath regime, characterization results are analytically explained, evaluating impact each parameter variation. Overall, these findings contribute technological implementations polarization-sensitive, gratings for applications.

Language: Английский

Machine learning-assisted mid-infrared spectrochemical fibrillar collagen imaging in clinical tissues DOI Creative Commons
Wihan Adi,

Bryan E. Rubio Perez,

Yuming Liu

et al.

Journal of Biomedical Optics, Journal Year: 2024, Volume and Issue: 29(09)

Published: Sept. 27, 2024

Label-free multimodal imaging methods that can provide complementary structural and chemical information from the same sample are critical for comprehensive tissue analyses. These specifically needed to study complex tumor-microenvironment where fibrillar collagen's architectural changes associated with cancer progression. To address this need, we present a computational method mid-infrared spectral (MIRSI) is employed second harmonic generation (SHG) microscopy identify collagen in biological tissues.

Language: Английский

Citations

3
3D-architected gratings for polarization-sensitive, nature-inspired structural color DOI Creative Commons

Mauricio Miranda,

Lars Osterberg,

Dev Narayan Shah

et al.

Nanophotonics, Journal Year: 2025, Volume and Issue: 14(5), P. 547 - 558

Published: March 1, 2025

Abstract Structural coloration, a color-generation mechanism often found in nature, arises from light–matter interactions such as diffraction, interference, and scattering, with micro- nanostructured elements. Herein, we systematically study anisotropic, 3D-architected grating structures polarization-tunable optical properties, inspired by the vivid blue of Morpho butterfly wings. Using two-photon lithography, fabricate multilayered gratings, varying parameters height (through scanning speed laser power), periodicity, number layers. In transmission, significant color transitions to brown were identified when structural incident light polarization conditions (azimuthal angle ellipticity). Based on thin film diffraction efficiency theory Raman–Nath regime, characterization results are analytically explained, evaluating impact each parameter variation. Overall, these findings contribute technological implementations polarization-sensitive, gratings for applications.

Language: Английский

Citations

0