Optofluidic Tunable Lenses for In-Plane Light Manipulation

Chen, Qingming; Li, Tenghao; Li, Zhaohui; Long, Jinlin; Zhang, Xuming

doi:10.3390/mi9030097

Cited by 23 publications

(13 citation statements)

References 53 publications

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“…There is another type of liquid lens named in-plane lens, which deals with the light travels along the chip [ 50 ]. It promises easier integration with other on chip elements.…”

Section: Dielectrophoresis-actuated Lenses and Applicationsmentioning

confidence: 99%

Electrically Tunable Lenses for Imaging and Light Manipulation

et al. 2023

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Optofluidics seamlessly combines optics and microfluidics together to construct novel devices for microsystems, providing flexible reconfigurability and high compatibility. By taking advantage of mature electronic fabrication techniques and flexible regulation of microfluidics, electrically actuated optofluidics has achieved fantastic optical functions. Generally, the optical function is achieved by electrically modulating the interfaces or movements of microdroplets inside a small chamber. The high refractive index difference (~0.5) at the interfaces between liquid/air or liquid/liquid makes unprecedented optical tunability a reality. They are suitable for optical imaging devices, such as microscope and portable electronic. This paper will review the working principle and recent development of electrical optofluidic devices by electrowetting and dielectrophoresis, including optical lens/microscope, beam steering and in-plane light manipulation. Some methods to improve the lens performance are reviewed. In addition, the applications of electrical microfluidics are also discussed. In order to stimulate the development of electrically controlled liquid lens, two novel designs derived from electrowetting and dielectrophoresis are introduced in this paper.

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“…There is another type of liquid lens named in-plane lens, which deals with the light travels along the chip [ 50 ]. It promises easier integration with other on chip elements.…”

Section: Dielectrophoresis-actuated Lenses and Applicationsmentioning

confidence: 99%

Electrically Tunable Lenses for Imaging and Light Manipulation

et al. 2023

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“…Microlenses can be formed by solid media [ 308 , 331 ], soft deformable surfaces [ 332 ], and liquid-liquid interface [ 333 ]. Changes in the parameters of such microlenses can be carried out by external influence (pressure, heating, electric or magnetic field) or by liquid flows inside the chip.…”

Section: Label-free Optical Techniques Of Protein Detection Quantific...mentioning

confidence: 99%

“…Lenses, in the formation or control of the parameters of which the liquids in the chip are involved, are called optofluidic microlenses. According to the operation principle, liquid microlenses in a chip can be divided into the interfacial deformation lens, refractive index modulation (gradient index) lens, the liquid-crystal based lens and the diffractive lens (for example, the Fresnel zone plate—periodic microstructure, filled with liquid) [ 332 ]. Air-gap walls inside the chip can be used as mirrors [ 308 ] if the condition of total internal reflection is satisfied.…”

Section: Label-free Optical Techniques Of Protein Detection Quantific...mentioning

confidence: 99%

Label-Free Physical Techniques and Methodologies for Proteins Detection in Microfluidic Biosensor Structures

et al. 2022

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Proteins in biological fluids (blood, urine, cerebrospinal fluid) are important biomarkers of various pathological conditions. Protein biomarkers detection and quantification have been proven to be an indispensable diagnostic tool in clinical practice. There is a growing tendency towards using portable diagnostic biosensor devices for point-of-care (POC) analysis based on microfluidic technology as an alternative to conventional laboratory protein assays. In contrast to universally accepted analytical methods involving protein labeling, label-free approaches often allow the development of biosensors with minimal requirements for sample preparation by omitting expensive labelling reagents. The aim of the present work is to review the variety of physical label-free techniques of protein detection and characterization which are suitable for application in micro-fluidic structures and analyze the technological and material aspects of label-free biosensors that implement these methods. The most widely used optical and impedance spectroscopy techniques: absorption, fluorescence, surface plasmon resonance, Raman scattering, and interferometry, as well as new trends in photonics are reviewed. The challenges of materials selection, surfaces tailoring in microfluidic structures, and enhancement of the sensitivity and miniaturization of biosensor systems are discussed. The review provides an overview for current advances and future trends in microfluidics integrated technologies for label-free protein biomarkers detection and discusses existing challenges and a way towards novel solutions.

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“…Specifically, actuators play an important role in the camera module. In the past literatures, there are manifold miniature actuators, including piezoelectric motors [3]- [12], liquid lenses [13]- [15], stepping motors [16]- [18], and voice coil motors (VCMs) [19]- [24], and magnetorheological elastomer (MRE) [25]. To capture high-magnification OZ images, the stepping motor is used as actuator in the commercial smartphone camera module.…”

Section: Introductionmentioning

confidence: 99%

Design of a Voice Coil Motor Actuator With L-Shape Coils for Optical Zooming Smartphone Cameras

Hsieh

Liu

2020

IEEE Access

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This paper proposes a voice coil motor (VCM) with a novel electromagnetic structure for smartphone OZ actuators, and the advantages of this novel design are its long displacement, compact size, and more powerful and stable Lorentz force. These advantages are achieved by the novel electromagnetic structure that consist of L-shape coils. Its performances were verified by a laboratory-built prototype, and the experimental results (Lorentz force F VCM , response time, and zoomed images) can prove the proposed VCM actuator is feasible and vigorous.

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Optofluidic Tunable Lenses for In-Plane Light Manipulation

Cited by 23 publications

References 53 publications

Electrically Tunable Lenses for Imaging and Light Manipulation

Electrically Tunable Lenses for Imaging and Light Manipulation

Label-Free Physical Techniques and Methodologies for Proteins Detection in Microfluidic Biosensor Structures

Design of a Voice Coil Motor Actuator With L-Shape Coils for Optical Zooming Smartphone Cameras

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