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Micromachines
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Optics and Photonics in Micromachines, 2nd Edition
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Optics and Photonics in Micromachines, 2nd Edition

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A：Physics".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 3909

Special Issue Editors

Prof. Dr. Cuifang Kuang

E-Mail Website
Guest Editor
College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
Interests: super-resolution optical imaging; high-throughput laser fabrication; optical field modulation; advanced optical instruments
Special Issues, Collections and Topics in MDPI journals
Dr. Wei Zhao

E-Mail Website
Guest Editor
State Key Laboratory of Photon-Technology in Western China Energy, International Scientific and Technological Cooperation Base of Photoelectric Technology and Functional Materials and Application, Institute of Photonics and Photon Technology, Northwest University, Xi’an 710127, China
Interests: micro-/nanofluidics; super-resolution optics and optical field modulation for laser fabrication and imaging; flow diagnostic techniques; electrokinetic flow; turbulence
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Optics, photonics, and related techniques have played crucial roles in modern society and industry. As a frontier field, nowadays, modern optics and photonics techniques are broadly and deeply entangled with the fast development of micro-/nanosystems in daily life, chemical engineering, the energy industry, the communication and computer industry, biomedical and pharmaceutical engineering, etc., through fabrication, functionalization, testing, and productization. For instance, super-resolution optical fabrication has realized a capability of 10 nm or smaller writing of fine nanostructure for potential DNA manipulation applications. Optical tweezers and related sample manipulation techniques have been commercially used for drug development, accompanied with microchips.

In this Special Issue, we hope to provide a forum for the authors and readers to share their points of view on a broad topic, including optical fabrication techniques, an optical flow diagnostic method, visualization and imaging, nanophotonics, biophotonics, and other optics-related lab-on-a-chip applications. All the types of papers, e.g., research papers, communications, and review articles that focus on novel methodological and conceptual developments of optics and photonics for micro-/nanoscale applications, are welcome.

We look forward to receiving your submissions!

Prof. Dr. Cuifang Kuang
Dr. Wei Zhao
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. Micromachines 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 2600 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

  • optical fabrication techniques
  • optical flow diagnostic methods
  • visualization and imaging
  • nanophotonics and biophotonics
  • super lens and metamaterials

Related Special Issue

Published Papers (3 papers)

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Research

10 pages, 1558 KiB  
Article
Efficient and Shape-Sensitive Manipulation of Nanoparticles by Quasi-Bound States in the Continuum Modes in All-Dielectric Metasurfaces
by Lichao Zheng, Esha Maqbool and Zhanghua Han
Micromachines 2024, 15(4), 437; https://doi.org/10.3390/mi15040437 - 25 Mar 2024
Viewed by 660
Abstract
Current optical tweezering techniques are actively employed in the manipulation of nanoparticles, e.g., biomedical cells. However, there is still huge room for improving the efficiency of manipulating multiple nanoparticles of the same composition but different shapes. In this study, we designed an array [...] Read more.
Current optical tweezering techniques are actively employed in the manipulation of nanoparticles, e.g., biomedical cells. However, there is still huge room for improving the efficiency of manipulating multiple nanoparticles of the same composition but different shapes. In this study, we designed an array of high-index all-dielectric disk antennas, each with an asymmetric open slot for such applications. Compared with the plasmonic counterparts, this all-dielectric metasurface has no dissipation loss and, thus, circumvents the Joule heating problem of plasmonic antennas. Furthermore, the asymmetry-induced excitation of quasi-bound states in continuum (QBIC) mode with a low-power intensity (1 mW/µm2) incidence imposes an optical gradient force of −0.31 pN on 8 nm radius nanospheres, which is four orders of magnitude stronger than that provided by the Fano resonance in plasmonic antenna arrays, and three orders of magnitude stronger than that by the Mie resonance in the same metasurface without any slot, respectively. This asymmetry also leads to the generation of large optical moments. At the QBIC resonance wavelength, a value of 88.3 pN-nm will act on the nanorods to generate a rotational force along the direction within the disk surface but perpendicular to the slot. This will allow only nanospheres but prevent the nanorods from accurately entering into the slots, realizing effective sieving between the nanoparticles of the two shapes. Full article
(This article belongs to the Special Issue Optics and Photonics in Micromachines, 2nd Edition)
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17 pages, 4648 KiB  
Article
Multi-Focal Laser Direct Writing through Spatial Light Modulation Guided by Scalable Vector Graphics
by Linhan Duan, Yueqiang Zhu, Haoxin Bai, Chen Zhang, Kaige Wang, Jintao Bai and Wei Zhao
Micromachines 2023, 14(4), 824; https://doi.org/10.3390/mi14040824 - 07 Apr 2023
Cited by 1 | Viewed by 1379
Abstract
Multi-focal laser direct writing (LDW) based on phase-only spatial light modulation (SLM) can realize flexible and parallel nanofabrication with high-throughput potential. In this investigation, a novel approach of combining two-photon absorption, SLM, and vector path-guided by scalable vector graphics (SVGs), termed SVG-guided SLM [...] Read more.
Multi-focal laser direct writing (LDW) based on phase-only spatial light modulation (SLM) can realize flexible and parallel nanofabrication with high-throughput potential. In this investigation, a novel approach of combining two-photon absorption, SLM, and vector path-guided by scalable vector graphics (SVGs), termed SVG-guided SLM LDW, was developed and preliminarily tested for fast, flexible, and parallel nanofabrication. Three laser focuses were independently controlled with different paths, which were optimized according to the SVG to improve fabrication and promote time efficiency. The minimum structure width could be as low as 81 nm. Accompanied by a translation stage, a carp structure of 18.10 μm × 24.56 μm was fabricated. This method shows the possibility of developing LDW techniques toward fully electrical systems, and provides a potential way to efficiently engrave complex structures on nanoscales. Full article
(This article belongs to the Special Issue Optics and Photonics in Micromachines, 2nd Edition)
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16 pages, 6425 KiB  
Article
Flow Cytometry with Anti-Diffraction Light Sheet (ADLS) by Spatial Light Modulation
by Yanyan Gong, Ming Zeng, Yueqiang Zhu, Shangyu Li, Wei Zhao, Ce Zhang, Tianyun Zhao, Kaige Wang, Jiangcun Yang and Jintao Bai
Micromachines 2023, 14(3), 679; https://doi.org/10.3390/mi14030679 - 19 Mar 2023
Viewed by 1406
Abstract
Flow cytometry is a widespread and powerful technique whose resolution is determined by its capacity to accurately distinguish fluorescently positive populations from negative ones. However, most informative results are discarded while performing the measurements of conventional flow cytometry, e.g., the cell size, shape, [...] Read more.
Flow cytometry is a widespread and powerful technique whose resolution is determined by its capacity to accurately distinguish fluorescently positive populations from negative ones. However, most informative results are discarded while performing the measurements of conventional flow cytometry, e.g., the cell size, shape, morphology, and distribution or location of labeled exosomes within the unpurified biological samples. Herein, we propose a novel approach using an anti-diffraction light sheet with anisotroic feature to excite fluorescent tags. Constituted by an anti-diffraction Bessel–Gaussian beam array, the light sheet is 12 μm wide, 12 μm high, and has a thickness of ~0.8 μm. The intensity profile of the excited fluorescent signal can, therefore, reflect the size and allow samples in the range from O (100 nm) to 10 μm (e.g., blood cells) to be transported via hydrodynamic focusing in a microfluidic chip. The sampling rate is 500 kHz, which provides a capability of high throughput without sacrificing the spatial resolution. Consequently, the proposed anti-diffraction light sheet flow cytometry (ADLSFC) can obtain more informative results than the conventional methodologies, and is able to provide multiple characteristics (e.g., the size and distribution of fluorescent signal) helping to distinguish the target samples from the complex backgrounds. Full article
(This article belongs to the Special Issue Optics and Photonics in Micromachines, 2nd Edition)
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