Variable optofluidic slit aperture

Schuhladen, Stefan; Banerjee, Kaustubh; Stürmer, Moritz; Müller, Philipp; Wallrabe, Ulrike; Zappe, Hans

doi:10.1038/lsa.2016.5

Cited by 36 publications

(18 citation statements)

References 22 publications

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“…Deforming the diaphragm and pushing it to the top-end of ink chamber squashes the ink at the central part of the chamber to the side to allow light to pass through. Besides this pneumatic actuation, several other mechanisms were also demonstrated to implement fluid-based tunable apertures, such as electro-wetting [85], dielectric force [86], magnetic force [87] and capillary force [88].…”

Section: Fluid-based Optofluidic Aperturementioning

confidence: 99%

Toward the commercialization of optofluidics

Song

Nguyen

Tan

2017

Microfluid Nanofluid

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Optofluidics is a marriage between the field of optics and microfluidics. This field aims at providing practical solutions with the integration of optical tools into lab-on-chip systems. Often, this results in opportunities for commercialization due to the advancement offered after the integration. Although numerous novel functions and properties have been demonstrated with the combination of optics and microfluidics, the market has witnessed only few transferals of optofluidic technologies from academic laboratories. This stemmed from a lack of a "killer applications" despite several decades of development. Therefore it is necessary to have a retrospective review on this topic, particularly on the basic optofluidic components, to analyze what might be the hurdles to stop the market uptake of optofluidic devices. Specifically, this review paper is focused on discussion of optofluidic components in terms of fabrication standardization, device & operational cost and practicability for end-users. It is believed that these factors play important roles in the market uptake of a novel technology. We then provide perspectives on how to align the development of optofluidics with the requirements imposed by the industry.

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Section: Fluid-based Optofluidic Aperturementioning

confidence: 99%

Toward the commercialization of optofluidics

Song

Nguyen

Tan

2017

Microfluid Nanofluid

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“…Excessively strong light can damage the retina and weak light hinders object recognition; the human eye has an iris to adapt to light environment variation (Figure g). Many schemes with various actuation mechanisms have sought to mimic this form of adaptation, such as electromagnetic heating, electrowetting in microfluidics, and piezomechanics; however, such schemes require separate external controllers. A recently introduced approach based on a novel material that directly reacts to light provides an active accommodation device that can eliminate the need for an external control unit.…”

Section: Biomimicry Of Single‐chambered Eyesmentioning

confidence: 99%

Bioinspired Artificial Eyes: Optic Components, Digital Cameras, and Visual Prostheses

Lee

Choi

Kim

et al. 2017

Adv Funct Materials

188

168

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The diverse vision systems found in nature can provide interesting design inspiration for imaging devices, ranging from optical subcomponents to digital cameras and visual prostheses, with more desirable optical characteristics compared to conventional imagers. The advantages of natural vision systems include high visual acuity, wide field of view, wavelength-free imaging, improved aberration correction and depth of field, and high motion sensitivity. Recent advances in soft materials, ultrathin electronics, and deformable optoelectronics have facilitated the realization of novel processes and device designs that mimic biological vision systems. This review highlights recent progress and continued efforts in the research and development of bioinspired artificial eyes. At first, the configuration of two representative eyes found in nature: a single-chambered eye and a compound eye, is explained. Then, advances in bioinspired optic components and image sensors are discussed in terms of materials, optical/mechanical designs, and integration schemes. Subsequently, novel visual prostheses as representative application examples of bioinspired artificial eyes are described.

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“…Figure 10 B shows an EW-actuated microprism with a flat (uncurved) liquid–liquid interface of variable tilt [ 78 ] that enables steering of beams in two independent directions on a time scale of ms. Similarly, wedge-shaped geometric structures can be exploited to create efficient switchable retroreflectors [ 79 ] by alternating between a flat and a curved liquid–liquid interface, Figure 10 C. Recently, Schuhladen et al [ 80 ] constructed a tunable optofluidic slit aperture actuated by AC electrowetting.…”

Section: Outlook: Advanced Optofluidic Imaging Systems For the Futmentioning

confidence: 99%

Recent Developments in Optofluidic Lens Technology

2016

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Optofluidics is a rapidly growing versatile branch of adaptive optics including a wide variety of applications such as tunable beam shaping tools, mirrors, apertures, and lenses. In this review, we focus on recent developments in optofluidic lenses, which arguably forms the most important part of optofluidics devices. We report first on a number of general characteristics and characterization methods for optofluidics lenses and their optical performance, including aberrations and their description in terms of Zernike polynomials. Subsequently, we discuss examples of actuation methods separately for spherical optofluidic lenses and for more recent tunable aspherical lenses. Advantages and disadvantages of various actuation schemes are presented, focusing in particular on electrowetting-driven lenses and pressure-driven liquid lenses that are covered by elastomeric sheets. We discuss in particular the opportunities for detailed aberration control by using either finely controlled electric fields or specifically designed elastomeric lenses.

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Variable optofluidic slit aperture

Cited by 36 publications

References 22 publications

Toward the commercialization of optofluidics

Toward the commercialization of optofluidics

Bioinspired Artificial Eyes: Optic Components, Digital Cameras, and Visual Prostheses

Recent Developments in Optofluidic Lens Technology

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