Wavefront shaping: A versatile tool to conquer multiple scattering in multidisciplinary fields

Yu, Zhipeng; Li, Huanhao; Zhong, Tianting; Park, Jung Hoon; Cheng, Sha; Woo, Chi Man; Zhao, Qi; Yao, Jianquan; Zhou, Yingying; Huang, Xianghua; Pang, Weiran; Yoon, Hansol; Shen, Yuecheng; Liu, Honglin; Zheng, Yuanjin; Park, YongKeun; Wang, Lihong V.; Lai, Puxiang

doi:10.1016/j.xinn.2022.100292

Cited by 39 publications

(14 citation statements)

References 213 publications

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“…197,218,219 New technologies such as microfluidics, photoetching, and 3D printing can help to obtain adhesive hydrogels with finer micro-nano structures. 112,119,[220][221][222] We are confident to see that bio-inspired adhesive hydrogels are not just blunt imitations of natural strategies, but combine the unique advantages of various advanced materials and technologies. It is believed that with the development of materials science and other fields, biomedical hydrogels that perfectly meet the requirements of safety, robustness, appropriateness, and controllability will be developed.…”

Section: Discussionmentioning

confidence: 99%

Bio‐inspired adhesive hydrogel for biomedicine—principles and design strategies

Yang

Lai

et al. 2022

Smart Medicine

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The adhesiveness of hydrogels is urgently required in various biomedical applications such as medical patches, tissue sealants, and flexible electronic devices. However, biological tissues are often wet, soft, movable, and easily damaged. These features pose difficulties for the construction of adhesive hydrogels for medical use. In nature, organisms adhere to unique strategies, such as reversible sucker adhesion in octopuses and nontoxic and firm catechol chemistry in mussels, which provide many inspirations for medical hydrogels to overcome the above challenges. In this review, we systematically classify bioadhesion strategies into structure‐related and molecular‐related ones, which cover almost all known bioadhesion paradigms. We outline the principles of these strategies and summarize the corresponding designs of medical adhesive hydrogels inspired by them. Finally, conclusions and perspectives concerning the development of this field are provided. For the booming bio‐inspired adhesive hydrogels, this review aims to summarize and analyze the various existing theories and provide systematic guidance for future research from an innovative perspective.

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Section: Discussionmentioning

confidence: 99%

Bio‐inspired adhesive hydrogel for biomedicine—principles and design strategies

Yang

Lai

et al. 2022

Smart Medicine

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“…Straightforward strategies that use only unscattered, “ballistic” photons selected by optical coherence tomography, 1 two-photon microscopy, 2 or holographic gating 3 have proven to be useful but not efficient because the number of ballistic photons that can be used is intrinsically limited. Wavefront shaping 4 – 8 through phase compensation with a spatial light modulator is an alternative solution that allows focusing and imaging through stronger scattering samples. Furthermore, a variety of improved approaches have been proposed with the initial assistance from guide stars 9 , 10 and known objects 11 , 12 .…”

Section: Introductionmentioning

confidence: 99%

Scattered light imaging beyond the memory effect using the dynamic properties of thick turbid media

et al. 2023

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Scattered light imaging through complex turbid media has significant applications in biomedical and optical research. For the past decade, various approaches have been proposed for rapidly reconstructing fullcolor, depth-extended images by introducing point spread functions (PSFs). However, because most of these methods consider memory effects (MEs), the PSFs have angular shift invariance over certain ranges of angles. This assumption is valid for only thin turbid media and hinders broader applications of these technologies in thick media. Furthermore, the time-variant characteristics of scattering media determine that the PSF acquisition and image reconstruction times must be less than the speckle decorrelation time, which is usually difficult to achieve. We demonstrate that image reconstruction methods can be applied to timevariant thick turbid media. Using the time-variant characteristics, the PSFs in dynamic turbid media within certain time intervals are recorded, and ergodic scattering regimes are achieved and combined as ensemble point spread functions (ePSFs). The ePSF traverses shift-invariant regions in the turbid media and retrieves objects beyond the ME. Furthermore, our theory and experimental results verify that our approach is applicable to thick turbid media with thickness of 1 cm at visible incident wavelengths.

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“…To achieve dynamic polarization holography, active optical materials with versatile control of light are highly desirable. Fortunately, scattering materials (SMs) can serve as such a type of active materials. , Active light field control beyond scattering can be achieved by using wavefront shaping techniques, − and thus SMs with wavefront shaping can be used as nonconventional optical elements, such as lenses, polarizers, and waveplates . In particular, SM-based elements have already overcome the limitations on the image size and viewing angle of conventional 3D holographic displays. , Despite rapid progress in the application of active SMs, such materials have not been exploited as reconfigurable vectorial holograms for dynamic polarization holography.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Polarization Holographic Projection Enabled by a Scattering Material-Based Reconfigurable Hologram

Liu

Wang

et al. 2022

ACS Photonics

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Polarization holography generally depends on polarization-sensitive materials to reconstruct vectorial images, hindering the reconfigurability of the polarization hologram. As a result, it remains challenging to realize dynamic polarization holography that requires the hologram to integrate reconfigurability with vectorial wavefront control. Here, we demonstrate dynamic vectorial holographic projections by using a scattering material-based reconfigurable hologram. The hologram is composed of a scattering material and a digital hologram. The scattering material made of polyvinylidene fluoride nanofibers transforms the incident light into a speckle field with space-variant polarization states. Then, wavefront control of the hologram enables reconstruction of arbitrary vectorial images with reconfigurability. The scattering-enabled polarization holographic technique enables encoding multiple images with six polarization channels that can be flexibly switched. Furthermore, dynamic polarization-multiplexed image projection at a frame rate of up to 22, 270 fps can be achieved. A polarization-dependent 3D multiplane projection is also demonstrated. Our approach offers a unique avenue to dynamic holographic techniques with polarization multiplexing capability.

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Wavefront shaping: A versatile tool to conquer multiple scattering in multidisciplinary fields

Cited by 39 publications

References 213 publications

Bio‐inspired adhesive hydrogel for biomedicine—principles and design strategies

Bio‐inspired adhesive hydrogel for biomedicine—principles and design strategies

Scattered light imaging beyond the memory effect using the dynamic properties of thick turbid media

Dynamic Polarization Holographic Projection Enabled by a Scattering Material-Based Reconfigurable Hologram

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