Smart Compound Eyes Enable Tunable Imaging

Ma, Zhenqiang; Hu, Xinyu; Zhang, Yong‐Lai; Liu, Xueqing; Hou, Zhi‐Shan; Niu, Lei; Zhu, Lin; Han, Bing; Chen, Qi‐Dai; Sun, Hong–Bo

doi:10.1002/adfm.201903340

Cited by 79 publications

(58 citation statements)

References 57 publications

(54 reference statements)

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“…To obtain a continuously tunable focal length, some have taken inspiration from the contraction of the human crystalline eye lens and integrated it in their artificial compound eye design. [320] Ma et al used the femtosecond laser wet etching (FLWE) technique to fabricate a microlens array structure based on bovine serum album (BSA) protein and placed it upon a SU-8 optical lens. The BSA protein microlens swells and condenses upon the increase and decrease of the pH value, respectively.…”

Section: Photoreceptorsmentioning

confidence: 99%

Materials, Actuators, and Sensors for Soft Bioinspired Robots

et al. 2020

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This review covers recent advancements in the field of bioinspired soft robotics, with a primary focus on the last 4 years (2017)(2018)(2019)(2020). The review serves as a toolbox for an interdisciplinary audience interested in the most recent bioinspired soft robotic technologies. In particular, it highlights and explores the vital components of soft robots, focusing on the enabling mechanisms and their biological inspirations. The first section discusses the materials used to fabricate soft bio inspired robots. Soft bioinspired actuation and sensing are then discussed, exploring their capabilities and implementation by researchers. Existing challenges and future potentials of bioinspired soft robots are addressed in the concluding remarks. This review provides engineers and scientists with the latest technological advancements and information needed for designing and developing the next generation of soft bioinspired robotic systems. The future applications of these robots will be grand and limitless. Materials Used for Bioinspired Sensors and ActuatorsClassical robotic systems are comprised of rigid bodies, actuators, and sensors. Unfortunately, many of these well-developed actuators and sensors are not transferable to soft bodies. Thus, researchers working in soft robotics need to reinvent actuators and sensors for soft moving bodies. Biological organisms can be an excellent inspiration for designing these soft actuators and sensors, allowing for their integration in both soft and rigid bodies. The design process of soft actuators and sensors have to be initiated with material selection and composition, for they are foundations upon which the actuators and sensors will be built around. Presently, a diversified list of materials has been used in the development of soft robotic systems. This section will cover some of the latest advancements in the last 4 years in the area of material selection and composition for the design and development of soft bioinspired actuators and sensors.During the past 4 years, researchers have produced soft bioinspired actuators and sensors using biological material such as muscle tissue, [23,24] and plant fibers; [25] carbon-based materials such as graphite and graphene oxide (GO) [26][27][28][29][30][31] and carbon nanotubes (CN); [32,33] hydrogel materials such as poly(Nisopropylacrylamide) (PNIPAM), [34,35] liquid crystal elastomers (LCE), [36] dielectric elastomers (DE), [37] and ionic polymermetal composites (IPMC). [38] An overview of these materials (Figure 1), along with their underlying mechanisms, are discussed below.Biological systems can perform complex tasks with high compliance levels. This makes them a great source of inspiration for soft robotics. Indeed, the union of these fields has brought about bioinspired soft robotics, with hundreds of publications on novel research each year. This review aims to survey fundamental advances in bioinspired soft actuators and sensors with a focus on the progress between 2017 and 2020, providing a primer for the materials used i...

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Section: Photoreceptorsmentioning

confidence: 99%

Materials, Actuators, and Sensors for Soft Bioinspired Robots

et al. 2020

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“…[139] Currently, bio-inspired image-capturing optical systems characterized integrated with hemispherical micro-lens array-type compound sensors have been widely exploited for various imaging techniques, ranging from complementary metaloxide semiconductor and charge coupled device imaging sensors to compact optical systems, along with the flexible and stretchable electronic techniques. [140][141][142] Figure 6d shows a photograph of the deformable and hemispherical-shaped camera inspired by arthropod eyes. [127] The surfaces of the fabricated arthropodinspired cameras were densely distributed with 180 artificial imaging elements, which is approximately the number of eyes of dark beetles and fire ants.…”

Section: Visual Devicesmentioning

confidence: 99%

Skin‐Like Electronics for Perception and Interaction: Materials, Structural Designs, and Applications

Chen

et al. 2020

Advanced Intelligent Systems

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Recent advances in the material and structural design of skin-like electronics have enhanced the interactions between the virtual and physical worlds and between people and objects. Herein, the existing flexible sensing materials and microstructures, including flexible stimuli-responsive materials and response-and stretchability-enhanced microstructures, are reviewed. Five typical skin-like electronics with sensitivities analogous to the human senses (olfactory, visual, auditory, tactile, and gustatory senses) and their corresponding applications (gas, light, chemical composition, sound, and mechanical signal monitoring) are introduced. Finally, it is concluded with some perspectives on challenges and opportunities for future research in flexible hybrid electronics.

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“…Firstly, laser fabrication can enable designable patterning of graphene in a mask-free, chemicalfree, and non-contact manner (Ma et al, 2018;Li et al, 2020). From the viewpoint of fabrication techniques, two methods stand out as prominent approaches: two beam laser interference (TBLI) and laser direct writing (LDW) (Ma et al, 2019;Zhang et al, 2019). TBLI fabrication can produce 1D or 2D gratinglike microstructures on graphene surfaces in a cost-effective manner (Guo et al, 2012).…”

Section: Unique Advantages Of Laser Fabrication Of Graphene Surfacesmentioning

confidence: 99%

Laser Fabrication of Bioinspired Graphene Surfaces With Superwettability

et al. 2020

Front. Chem.

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The past decades have seen growing research interest in developing efficient fabrication techniques for preparing bioinspired graphene surfaces with superwettability. Among the various fabrication methods, laser fabrication stands out as a prominent one to achieve this end and has demonstrated unique merits in the development of graphene surfaces with superwettability. In this paper, we reviewed the recent advances in this field. The unique advantages of laser fabricated graphene surfaces have been summarized. Typical graphene surfaces with superwettability achieved by laser fabrication, including superhydrophobic graphene surfaces, oil/ water separation, fog collection, antibacterial surfaces, surface enhanced Raman scattering (SERS), and desalination, have been introduced. In addition, current challenges and future perspectives in this field have been discussed. With the rapid progress of novel laser physical/ chemical fabrication schemes, graphene surfaces with superwettability prepared by laser fabrication may undergo sustained development and thus contribute greatly to the scientific research and our daily life.

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Smart Compound Eyes Enable Tunable Imaging

Cited by 79 publications

References 57 publications

Materials, Actuators, and Sensors for Soft Bioinspired Robots

Materials, Actuators, and Sensors for Soft Bioinspired Robots

Skin‐Like Electronics for Perception and Interaction: Materials, Structural Designs, and Applications

Laser Fabrication of Bioinspired Graphene Surfaces With Superwettability

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