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Micromachines
Special Issues
Optofluidics: From Fundamental Research to Applications
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Optofluidics: From Fundamental Research to Applications

A special issue of Micromachines (ISSN 2072-666X).

Deadline for manuscript submissions: closed (15 June 2018) | Viewed by 19996

Special Issue Editors

Dr. Michinao Hashimoto

E-Mail Website
Guest Editor
Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore
Interests: microfluidics; bioprinting; organ-on-a-chip; flexible devices; food printing
Special Issues, Collections and Topics in MDPI journals
Dr. Paolo Minzioni

E-Mail Website
Guest Editor
Integrated Photonics Laboratory, Department of Electrical, Computer and Biomedical Engineering, Università di Pavia, Via Ferrata, 5 A, I-27100 Pavia, Italy
Interests: nonlinear optics; silicon photonics; integrated devices; optical resonators; fiber transmission systems; optical phase conjugation; spectral inversion; optical trapping; biophotonics; microfuidics; acustofluidics; optofluidics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to invite you to contribute to the Special Issue “Optofluidics: From Fundamental Research to Applications” organized by the MDPI journal Micromachines (https://www.mdpi.com/journal/micromachines).

The aim of this Special Issue is to provide scientists working in the field with an up-to-date collection of papers investigating the world of micro-opto-fluidic devices. It will include both original research papers and short communications, together with invited review articles, covering the different aspects from basic research and components, up to technologically-mature integrated devices for biomedical applications.

The Special Issue will be published in the open access journal Micromachines (by MDPI AG, Basel – CH, current Impact Factor 1.833) so as to allow wide dissemination of the research results.

Thanks to a close collaboration with the Optofluidics 2017 conference (http://www.optofluidics.sg 25–28 July, 2017, Singapore), providing an international and interdisciplinary forum for researchers, the Special Issue will also include relevant papers dealing with the conference topics.

Dr. Michinao Hashimoto
Dr. Paolo Minzioni
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

  • Microfluidics
  • Optofluidics
  • Lab-on-chip
  • Single-cell analysis
  • Immuonosensors
  • Biochemical sensors
  • Plasmonics
  • Optical imaging
  • Cell sorting
  • Water quality monitoring
  • Point-of-Care diagnosis

Published Papers (4 papers)

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Research

12 pages, 1766 KiB  
Article
Dual Sacrificial Molding: Fabricating 3D Microchannels with Overhang and Helical Features
by Wei Huang Goh and Michinao Hashimoto
Micromachines 2018, 9(10), 523; https://doi.org/10.3390/mi9100523 - 16 Oct 2018
Cited by 21 | Viewed by 6395
Abstract
Fused deposition modeling (FDM) has become an indispensable tool for 3D printing of molds used for sacrificial molding to fabricate microfluidic devices. The freedom of design of a mold is, however, restricted to the capabilities of the 3D printer and associated materials. Although [...] Read more.
Fused deposition modeling (FDM) has become an indispensable tool for 3D printing of molds used for sacrificial molding to fabricate microfluidic devices. The freedom of design of a mold is, however, restricted to the capabilities of the 3D printer and associated materials. Although FDM has been used to create a sacrificial mold made with polyvinyl alcohol (PVA) to produce 3D microchannels, microchannels with free-hanging geometries are still difficult to achieve. Herein, dual sacrificial molding was devised to fabricate microchannels with overhang or helical features in PDMS using two complementary materials. The method uses an FDM 3D printer equipped with two extruders and filaments made of high- impact polystyrene (HIPS) and PVA. HIPS was initially removed in limonene to reveal the PVA mold harboring the design of microchannels. The PVA mold was embedded in PDMS and subsequently removed in water to create microchannels with 3D geometries such as dual helices and multilayer pyramidal networks. The complementary pairing of the HIPS and PVA filaments during printing facilitated the support of suspended features of the PVA mold. The PVA mold was robust and retained the original design after the exposure to limonene. The resilience of the technique demonstrated here allows us to create microchannels with geometries not attainable with sacrificial molding with a mold printed with a single material. Full article
(This article belongs to the Special Issue Optofluidics: From Fundamental Research to Applications)
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10 pages, 3904 KiB  
Article
Parametric Excitation of Optomechanical Resonators by Periodical Modulation
by Jianguo Huang, Muhammad Faeyz Karim, Jiuhui Wu, Tianning Chen and Aiqun Liu
Micromachines 2018, 9(4), 193; https://doi.org/10.3390/mi9040193 - 18 Apr 2018
Cited by 1 | Viewed by 3929
Abstract
Optical excitation of mechanical resonators has long been a research interest, since it has great applications in the physical and engineering field. Previous optomechanical methods rely on the wavelength-dependent, optical anti-damping effects, with the working range limited to the blue-detuning range. In this [...] Read more.
Optical excitation of mechanical resonators has long been a research interest, since it has great applications in the physical and engineering field. Previous optomechanical methods rely on the wavelength-dependent, optical anti-damping effects, with the working range limited to the blue-detuning range. In this study, we experimentally demonstrated the excitation of optomechanical resonators by periodical modulation. The wavelength working range was extended from the blue-detuning to red-detuning range. This demonstration will provide a new way to excite mechanical resonators and benefit practical applications, such as optical mass sensors and gyroscopes with an extended working range. Full article
(This article belongs to the Special Issue Optofluidics: From Fundamental Research to Applications)
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1372 KiB  
Article
Two-Directional Tuning of Distributed Feedback Film Dye Laser Devices
by Hongtao Feng, Weiliang Shu, Hong Xu, Baoyue Zhang, Bin Huang, Jingjing Wang, Wei Jin and Yan Chen
Micromachines 2017, 8(12), 362; https://doi.org/10.3390/mi8120362 - 16 Dec 2017
Cited by 3 | Viewed by 4036
Abstract
We demonstrate a two-directional tuning method of distributed feedback (DFB) film dye laser devices to achieve high quality lasing and a large tuning range. In this work, we proposed a simple method to fabricate a continuous tunable solid-state dye laser on a flexible [...] Read more.
We demonstrate a two-directional tuning method of distributed feedback (DFB) film dye laser devices to achieve high quality lasing and a large tuning range. In this work, we proposed a simple method to fabricate a continuous tunable solid-state dye laser on a flexible Polydimethylsiloxane (PDMS) film. In order to obtain stable and tunable output lasing, the stretching property of the gelatine host was improved by mixing with a certain ratio of glycerol to prevent DFB cavity destruction. We employed two different tuning strategies of the DFB film dye lasers, by stretching the PDMS film in two perpendicular directions, and a nearly 40 nm tuning range in each direction was achieved. The laser device maintained single mode lasing with 0.12 nm linewidth during the tuning process. The reported tunable DFB film dye laser devices have huge potential as coherent light sources for sensing and spectroscopy applications. Full article
(This article belongs to the Special Issue Optofluidics: From Fundamental Research to Applications)
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1203 KiB  
Article
Label-Free Monitoring of Diffusion in Microfluidics
by Kristian Tølbøl Sørensen and Anders Kristensen
Micromachines 2017, 8(11), 329; https://doi.org/10.3390/mi8110329 - 09 Nov 2017
Cited by 5 | Viewed by 5125
Abstract
Label-free, real-time detection of concentration gradients is demonstrated in a microfluidic H-filter, using an integrated photonic crystal slab sensor to monitor sample refractive index with spatial resolution. The recorded diffusion profiles reveal root-mean-square diffusion lengths for non-fluorescing and non-absorbing molecules, both small (glucose, [...] Read more.
Label-free, real-time detection of concentration gradients is demonstrated in a microfluidic H-filter, using an integrated photonic crystal slab sensor to monitor sample refractive index with spatial resolution. The recorded diffusion profiles reveal root-mean-square diffusion lengths for non-fluorescing and non-absorbing molecules, both small (glucose, 180 Da) and large (bovine serum albumin, 67 kDa). Full article
(This article belongs to the Special Issue Optofluidics: From Fundamental Research to Applications)
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