Xiao Sun

1 month ago | nature.com | Zhidong Chen |Xiao Sun |Xiuling Zhu |Zhongtao Tian |Philip A. Surman

Augmented reality (AR) displays are emerging as the next generation of interactive platform, providing deeper human-digital interactions and immersive experiences beyond traditional flat-panel displays. Diffractive waveguide is a promising optical combiner technology for AR owing to its potential for the slimmest geometry and lightest weight. However, severe chromatic aberration of diffractive coupler has constrained widespread adoption of diffractive waveguide. Wavelength-dependent light deflection, caused by dispersion in both in-coupling and out-coupling processes, results in limited full-color field of view (FOV) and nonuniform optical responses in color and angular domains. Here we introduce an innovative full-color AR system that overcomes this long-standing challenge of chromatic aberration using a combination of inverse-designed metasurface couplers and a high refractive index waveguide. The optimized metasurface couplers demonstrate true achromatic behavior across the maximum FOV supported by the waveguide (exceeding 45°). Our AR prototype based on the designed metasurface waveguide, exhibits superior color accuracy and uniformity. This unique achromatic metasurface waveguide technology is expected to advance the development of visually compelling experience in compact AR display systems.

Oct 2, 2024 | mdpi.com | Jinfeng Zhu |Cheng Chen |Xiao Sun |Guowen Ding

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Aug 21, 2024 | mdpi.com | Shuo Ma |Wenwu Pan |Xiao Sun |Zekai Zhang

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.

Apr 17, 2024 | mdpi.com | Xiao Sun

Nov 29, 2023 | futuremedicine.com | Shuang Wu |Panpan Li |Qingsong Zhang |Xiao Sun

In patients with clinically negative lymph nodes, sentinel lymph node biopsy (SLNB) instead of axillary lymph node dissection (ALND) has no difference in regional control, disease-free and overall survival, and can improve quality of life and upper limb function [1–4]. The combination of patent blue and radioisotope can provide the success rate of sentinel lymph node (SLN) detection [3], but these approaches present specific advantages and drawbacks.