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Micromachines
Special Issues
Micro-Tweezers, Integrated Sensors and Micro-Manipulations Techniques
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Micro-Tweezers, Integrated Sensors and Micro-Manipulations Techniques

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

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 4373

Special Issue Editor

Dr. Rodica Voicu

E-Mail Website
Guest Editor
Modeling, Simulation and CAD Laboratory, National Institute for Research and Development in Microtechnologies—IMT Bucharest, 126A Erou Iancu Nicolae Street, 077190 Bucharest, Romania
Interests: MEMS; Microgrippers; polymer; Microtweezers; nanomaterials; FEM; simulations; modelling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Micro-tweezers are essential end-effectors used for different applications regarding the manipulation of delicate micro-objects. A compact structure with an integrated actuator and sensor is preferred in order to obtain a real-time response from the gripping force. The various manipulation actions include the handling, pick-and-place, gripping and positioning operations which are appropriate in diverse domains, such as micro-robotics, micro-assembly, biology and medicine.

In this Special Issue, we aim to highlight some of the recent developments regarding micro-tweezers’ structures, the integration of different sensors, structural advanced materials used for fabrication and the micro-manipulations techniques. We invite research papers and reviews that focus on tethered or untethered micro-tweezers for the manipulation, fabrication, or characterization of micro/nano-sized objects. Topics of particular interest include, but are not limited to, modeling and simulation, design, fabrication, as well as characterization at small scales and experiments.

Dr. Rodica Voicu
Guest Editor

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

  • micro-grippers
  • micro-tweezers
  • design, modelling and simulation of tweezers
  • fabrication of tweezers
  • characterization of tweezers
  • position and force sensing at small scales
  • sensors for micromanipulation
  • integrated sensors
  • microrobotics
  • micro and nano manipulation

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Published Papers (2 papers)

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Research

13 pages, 3025 KiB  
Article
Thomson–Einstein’s Tea Leaf Paradox Revisited: Aggregation in Rings
by Kirill Kolesnik, Daniel Quang Le Pham, Jessica Fong and David John Collins
Micromachines 2023, 14(11), 2024; https://doi.org/10.3390/mi14112024 - 30 Oct 2023
Viewed by 1924
Abstract
A distinct particle focusing spot occurs in the center of a rotating fluid, presenting an apparent paradox given the presence of particle inertia. It is recognized, however, that the presence of a secondary flow with a radial component drives this particle aggregation. In [...] Read more.
A distinct particle focusing spot occurs in the center of a rotating fluid, presenting an apparent paradox given the presence of particle inertia. It is recognized, however, that the presence of a secondary flow with a radial component drives this particle aggregation. In this study, we expand on the examination of this “Thomson–Einstein’s tea leaf paradox” phenomenon, where we use a combined experimental and computational approach to investigate particle aggregation dynamics. We show that not only the rotational velocity, but also the vessel shape, have a significant influence on a particle’s equilibrium position. We accordingly demonstrate the formation of a single focusing spot in a vessel center, as has been conclusively demonstrated elsewhere, but also the repeatable formation of stable ring-shaped particle arrangements. Full article
(This article belongs to the Special Issue Micro-Tweezers, Integrated Sensors and Micro-Manipulations Techniques)
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16 pages, 5916 KiB  
Article
An Aluminum Electro-Thermally Actuated Micro-Tweezer: Manufacturing and Characterization
by Rodica-Cristina Voicu and Catalin Tibeica
Micromachines 2023, 14(4), 797; https://doi.org/10.3390/mi14040797 - 31 Mar 2023
Cited by 3 | Viewed by 1666
Abstract
In this paper, we present the investigations of an aluminum micro-tweezer designed for micromanipulation applications. It includes design, simulation, fabrication, characterizations, and experimental measurements. Electro-thermo-mechanical FEM-based simulations using COMSOL Multiphysics were performed to describe the behavior of the micro-electro-mechanical system (MEMS) device. The [...] Read more.
In this paper, we present the investigations of an aluminum micro-tweezer designed for micromanipulation applications. It includes design, simulation, fabrication, characterizations, and experimental measurements. Electro-thermo-mechanical FEM-based simulations using COMSOL Multiphysics were performed to describe the behavior of the micro-electro-mechanical system (MEMS) device. The micro-tweezers were fabricated in aluminum, as structural material, by surface micromachining processes. Experimental measurements were performed and compared with the simulation results. A micromanipulation experiment was performed using titanium microbeads from 10–30 µm to confirm the performance of the micro-tweezer. This study serves as further research regarding the using of aluminum as structural material for MEMS devices designated for pick-and-place operations. Full article
(This article belongs to the Special Issue Micro-Tweezers, Integrated Sensors and Micro-Manipulations Techniques)
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