Recent Advances in Biointegrated Optoelectronic Devices

Xu, Huihua; Yin, Lan; Liu, Chuan; Sheng, Xing; Zhao, Ni

doi:10.1002/adma.201800156

Cited by 84 publications

(95 citation statements)

References 171 publications

(266 reference statements)

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“…Emerging flexible and stretchable electronics offer a possible remedy for electronics conformable to 3D surfaces . In the past few years, flexible and stretchable electronics have demonstrated many possibilities, including wearable and epidermal electronics, implantable neuro monitors and stimulators, soft optoelectronic devices, deformable displays, as well as conformal photovoltaic devices . On the one hand, ultrathin flexible electronics have demonstrated extreme bendability .…”

Section: Introductionmentioning

confidence: 99%

Water Transfer Printing Enhanced by Water‐Induced Pattern Expansion: Toward Large‐Area 3D Electronics

Borgne

Liu

Morvan

et al. 2019

Adv Materials Technologies

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flexible electronics have demonstrated extreme bendability. [21,22] Even so, wrinkles and folds are inevitable when wrapping flexible sheets on 3D surfaces with two nonzero principal curvatures. A recently developed curved image array demonstrated that selectively cutting the flexible sheet can effectively reduce folding and wrinkling when conforming it to a 3D surface. [23] On the other hand, stretchable electronics enabled by stretchable serpentine interconnects, [24,25] liquid metal, [26] nanomeshes [27] and nanoscrolls, [28] or intrinsically stretchable conductive and semiconducting polymers [29][30][31][32] are able to not only bend but also expand inplane, hence capable of conforming to 3D surfaces such as spherical domes. But so far, there are limited studies on the conforming process, especially when the target object has a complex 3D surface. Except for conforming planar electronics to 3D surfaces, direct printing of electrical components on 3D surfaces has been demonstrated. [33] However, only limited materials such as conductive inks and devices such as 3D antenna can be printed so far. As a result, simple but versatile transferring techniques are in need for conformable electronics.Water transfer printing (WTP) technology, also known as hydrographic printing, is commonly used to transfer planar graphics to 3D surfaces. [34] The process begins by printing graphics on a water-soluble substrate, which is then placed on water surface. As the substrate gets dissolved by water, the ultrathin graphics layer stays floating on water. A solid Perfectly wrapping planar electronics to complex 3D surfaces represents a major challenge in the manufacture of conformable electronics. Intuitively, thinner electronics are easier to conform to curved surfaces but they usually require a supporting substrate for handling. The water transfer printing (WTP) technology utilizes water surface tension to keep ultrathin electronics floating flat without supporting substrate, enabling their conformal transfer on 3D surfaces through a dipping process. In many cases, however, the size of the microfabricated electronics is much smaller than the target 3D surface. This work proposes that such mismatch in size can be overcome by leveraging stretchable electronics in WTP. Stretchable electronics are compliant to inplane stretch induced by water surface tension, hence can first self-expand in water and then be transferred onto 3D objects. Uniaxial and biaxial expansion ranging from 41% to 166% has been achieved without any externally applied tension. The results demonstrate that expansion-enhanced WTP is a promising fabrication process for conformable electronics on large 3D surfaces.

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Section: Introductionmentioning

confidence: 99%

Water Transfer Printing Enhanced by Water‐Induced Pattern Expansion: Toward Large‐Area 3D Electronics

Borgne

Liu

Morvan

et al. 2019

Adv Materials Technologies

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“…The FoVs of single ommatidium and the entire component are experimentally measured as 8° and 148°, respectively. The thin shell structure reduces the imaging aberration of the sub‐apertures at different azimuth angles; meanwhile, such structure makes the focal plane of the component just beneath its inner surface, which makes it probable to directly couple with newly introduced curved or flexible sensor arrays . Owing to the merits of: i) high‐quality imaging with remarkable IR spectral selectivity; ii) massively integrated imaging sub‐aperture array with enlarged FoV; iii) compact and wafery structure with potential integration with arrayed sensor, such proposed IR ACE component is perspective to find applications in IR imaging and 3D positioning.…”

Section: Introductionmentioning

confidence: 99%

“…The arthropod species have developed and optimized their super sophisticated compound eye vision system over millions of years of evolution, and they provide valuable sources of inspiration to human beings to track and imitate. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Although the artificial compound eye (ACE) components in the visible light region are widely reported and some mimicking bio-vision www.advopticalmat.de…”

Section: Introductionmentioning

confidence: 99%

IR Artificial Compound Eye

Liu

Bian

Zhang

et al. 2019

Advanced Optical Materials

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In this work, a 3D IR artificial compound eye (ACE) optical component is fabricated using thermoplastic IR polymer material. The femtosecond laser‐assisted wet etching and the 3D nano‐imprinting techniques are proposed for fabricating this thin shell multi‐aperture component. The prepared component is close‐packed with over 1000 high‐quality micro‐facet‐lenslets (ommatidia) on the semispherical thin shell dome with base radius of 2.7 mm and sag height of 2.1 mm, enabling enlarged field of view to 148°. The ommatidia with diameter of 150 µm and numerical aperture of 0.35 are demonstrated to have a practical spatial resolution up to 160 lp mm−1. IR imaging experiments (both in passive and active scenarios) confirm its outstanding optical properties and uniformity, and demonstrate the probability of thermal target imaging with such component in the near‐infrared band. The proposed fabrication strategy shows remarkable efficiency and advantage in massive replication, and such ACE component predicts its potential in emerging applications, such as IR imaging, target tracking, and so on.

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“…Alternatively, implantable fibers and waveguides provide an accessible way to deliver therapeutic or sensing light into deep tissues to overcome the penetration limit. Besides, optical fibers and waveguides are also serving the rapidly emerging photonic and optoelectronic implants to transmit optical signals and power [2,18]. In recent years, integrated optical fibers and waveguides have begun to emerge particularly in biomedical applications including optogenetics [19,20,21], fluorescence detection [22,23] and sensing [24,25].…”

Section: Introductionmentioning

confidence: 99%

Biocompatible and Implantable Optical Fibers and Waveguides for Biomedicine

et al. 2018

Self Cite

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Optical fibers and waveguides in general effectively control and modulate light propagation, and these tools have been extensively used in communication, lighting and sensing. Recently, they have received increasing attention in biomedical applications. By delivering light into deep tissue via these devices, novel applications including biological sensing, stimulation and therapy can be realized. Therefore, implantable fibers and waveguides in biocompatible formats with versatile functionalities are highly desirable. In this review, we provide an overview of recent progress in the exploration of advanced optical fibers and waveguides for biomedical applications. Specifically, we highlight novel materials design and fabrication strategies to form implantable fibers and waveguides. Furthermore, their applications in various biomedical fields such as light therapy, optogenetics, fluorescence sensing and imaging are discussed. We believe that these newly developed fiber and waveguide based devices play a crucial role in advanced optical biointerfaces.

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Recent Advances in Biointegrated Optoelectronic Devices

Cited by 84 publications

References 171 publications

Water Transfer Printing Enhanced by Water‐Induced Pattern Expansion: Toward Large‐Area 3D Electronics

Water Transfer Printing Enhanced by Water‐Induced Pattern Expansion: Toward Large‐Area 3D Electronics

IR Artificial Compound Eye

Biocompatible and Implantable Optical Fibers and Waveguides for Biomedicine

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