67 citations · 140 across the 10 of their papers we have counts for
10 papers
3D Printed Multilayer Structures for High Numerical Aperture Achromatic Metalenses
Cheng-Feng Pan, Hao Wang, Hongtao Wang +8
Flat optics consisting of nanostructures of high-refractive-index materials produce lenses with thin form factors that tend to operate only at specific wavelengths. Recent attempts…
The height of chitinous ridges alone produces the entire structural colour palette
Hemant Kumar Raut, Qifeng Ruan, Cédric Finet +3
The colourful wings of butterflies result from the interaction between light and the intricate chitinous nanostructures on butterflies' scales. This study demonstrates that just by…
Colorful Optical Vortices with White Light Illumination
Hongtao Wang, Hao Wang, Qifeng Ruan +8
The orbital angular momentum (OAM) of light holds great promise for applications in optical communication, super-resolution imaging, and high-dimensional quantum computing. However…
Full Geometric Control of Hidden Color Information in Diffraction Gratings under Angled White Light Illumination
John You En Chan, Qifeng Ruan, Hongtao Wang +5
Under white light illumination, gratings produce an angular distribution of wavelengths dependent on the diffraction order and geometric parameters. However, previous studies of gr…
Overcoming Van der Waals Forces in reconfigurable nanostructures
Wang Zhang, Hao Wang, Alvin T. L. Tan +11
Reconfigurable metamaterials require constituent nanostructures to demonstrate switching of shapes with external stimuli. For generality, such nanostructures would touch and stick…
High-order Photonic Cavity Modes Enabled 3D Structural Color
Hailong Liu, Hongtao Wang, Hao Wang +8
It remains a challenge to directly print three-dimensional arbitrary shapes that exhibit structural colors at the micrometer scale. Woodpile photonic crystals (WPCs) fabricated via…
Reconfiguring colours of single relief structures by directional stretching
Qifeng Ruan, Wang Zhang, Hao Wang +7
Colour changes can be achieved by straining photonic crystals or gratings embedded in stretchable materials. However, the multiple repeat units and the need for a volumetric assemb…
Schrodinger's Red Pixel by Quasi Bound-State-In-Continuum
Zhaogang Dong, Lei Jin, Soroosh Daqiqeh Rezaei +9
While structural colors are ubiquitous in nature, saturated reds are mysteriously absent. Hence, a longstanding problem is in fabricating nanostructured surfaces that exhibit refle…
High-resolution light field prints by nanoscale 3D printing
John You En Chan, Qifeng Ruan, Menghua Jiang +5
A light field print (LFP) displays three-dimensional (3D) information to the naked-eye observer under ambient white light illumination. Changing perspectives of a 3D image are seen…
Painting with Hue, Saturation, and Brightness Control by Nanoscale 3D Printing
Hao Wang, Qifeng Ruan, Hongtao Wang +7
Varying only the in-plane or out-of-plane dimensions of nanostructures produces a wide range of colourful elements in metasurfaces and thin films. However, achieving shades of grey…