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Photonics
Special Issues
Recent Advances in Liquid Photonic Devices
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Recent Advances in Liquid Photonic Devices

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".

Deadline for manuscript submissions: closed (15 April 2025) | Viewed by 1557

Special Issue Editors

Dr. Yang Cheng

E-Mail Website
Guest Editor
School of Optics and Photonics, Beijing Institute of Technology, No. 5 Yard, Zhong Guan Cun South Street, Haidian District, Beijing 100081, China
Interests: adaptive lens; liquid lens; Alvarez lens; metalens; dielectric elastomer; compound eye; bionic imaging
Prof. Dr. Lihui Wang

E-Mail Website
Guest Editor
School of Future Science and Engineering, Soochow University, Suzhou 215299, China
Interests: adaptive optics; high-speed vision; dynamic interaction
Dr. Chao Liu

E-Mail Website
Guest Editor
School of Instrumentation and Optoelectronic Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China
Interests: liquid lens; bionic imaging; computational imaging
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

A liquid photonic device refers to a novel optoelectronic device. It is different from a traditional photonic device made of solid-state material. Liquid is employed as the optical media of a liquid photonic device. Liquid photonic devices are superior to traditional solid-state assemblies in terms of reduced bulk and weight, as well as having a high-speed response, low material costs, and facile fabrication. Such benefits can be used in imaging applications where space is at a premium. With the development of new optoelectric technology and novel materials, liquid photonic devices are experiencing significant advances.

This Special Issue aims to present the recent advances in liquid photonic devices. Original research articles and reviews are welcome. We look forward to receiving your contributions. Research areas may include, but are not limited to, the following:

  • Liquid lens.
  • Liquid crystal lens.
  • Liquid beam deflector.
  • Liquid prism.
  • Microfluidics.
  • Electrowetting effect.
  • Dielectrophoretic effect.
  • Dielectric elastomer.

Dr. Yang Cheng
Prof. Dr. Lihui Wang
Dr. Chao Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • liquid photonic devices
  • liquid lens
  • liquid crystal lens, liquid light switch
  • microfluidics
  • dielectric elastomer
  • electrowetting effect
  • dielectrophoretic effect

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Published Papers (1 paper)

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Review

32 pages, 12187 KiB  
Review
Adaptive Varifocal Lenses Based on Dielectric Elastomer Actuator
by Shibiao Li, Lin Liu, Haoyue Xing, Zhaohui Li and Yang Cheng
Photonics 2025, 12(3), 227; https://doi.org/10.3390/photonics12030227 - 1 Mar 2025
Viewed by 895
Abstract
Optical imaging systems using varifocal lenses have been widely used in many applications over the past several decades, such as machine vision devices, consumer electronic products, and medical instruments. Traditional varifocal lenses often consist of multiple solid focal length refractive optical elements. The [...] Read more.
Optical imaging systems using varifocal lenses have been widely used in many applications over the past several decades, such as machine vision devices, consumer electronic products, and medical instruments. Traditional varifocal lenses often consist of multiple solid focal length refractive optical elements. The varifocal ability is obtained by dislocating these optical elements along the optical axis over specific distances using mechanical driving mechanisms. It makes the traditional optical varifocal imaging systems suffer from bulky dimensions, slow response speed, complicated configuration, and discrete magnifications. Adaptive varifocal lenses have been a better choice to address the aforementioned limitations of traditional varifocal lenses. Dielectric elastomer actuators (DEA), which can effectively respond to an electric field and result in shape deformation, have been used to develop various adaptive lenses. This paper aims to give a brief review of adaptive varifocal lenses based on DEA. First, this paper describes the basic physical mechanism of DEA. Second, this paper reviews adaptive varifocal liquid lenses based on DEA and introduces their material, structure, and fabrication process, focusing on their unique advantages, such as fast response speed and compactness. However, despite these merits, the adaptive varifocal liquid lens still has challenges in environment stability and liquid leakage. To address these challenges, adaptive varifocal soft solid lenses based on DEA have been proposed, which are also reviewed. In addition, other adaptive varifocal lenses, including metalens, Fresnel lens, microlens array, and Alvarez lens, are also presented. Finally, the prospects and challenges for the development of adaptive varifocal lenses based on DEA are discussed. Full article
(This article belongs to the Special Issue Recent Advances in Liquid Photonic Devices)
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