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Li X, Wang F, Xia C, The HL, Bomer JG, Wang Y. Laser Controlled Manipulation of Microbubbles on a Surface with Silica-Coated Gold Nanoparticle Array. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2302939. [PMID: 37496086 DOI: 10.1002/smll.202302939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 07/13/2023] [Indexed: 07/28/2023]
Abstract
Microbubble generation and manipulation play critical roles in diverse applications such as microfluidic mixing, pumping, and microrobot propulsion. However, existing methods are typically limited to lateral movements on customized substrates or rely on specific liquids with particular properties or designed concentration gradients, thereby hindering their practical applications. To address this challenge, this paper presents a method that enables robust vertical manipulation of microbubbles. By focusing a resonant laser on hydrophilic silica-coated gold nanoparticle arrays immersed in water, plasmonic microbubbles are generated and detach from the substrates immediately upon cessation of laser irradiation. Using simple laser pulse control, it can achieve an adjustable size and frequency of bubble bouncing, which is governed by the movement of the three-phase contact line during surface wetting. Furthermore, it demonstrates that rising bubbles can be pulled back by laser irradiation induced thermal Marangoni flow, which is verified by particle image velocimetry measurements and numerical simulations. This study provides novel insights into flexible bubble manipulation and integration in microfluidics, with significant implications for various applications including mixing, drug delivery, and the development of soft actuators.
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Affiliation(s)
- Xiaolai Li
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, P. R. China
| | - Fulong Wang
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, P. R. China
| | - Chenliang Xia
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, P. R. China
| | - Hai Le The
- BIOS Lab-on-a-chip, University of Twente, Enschede, P.O. Box 217, 7500AE, The Netherlands
- Physics of Fluids, Max Planck Center Twente for Complex Fluid Dynamics and J.M. Burgers Centre for Fluid Mechanics, University of Twente, Enschede, P.O. Box 217, 7500AE, The Netherlands
| | - Johan G Bomer
- BIOS Lab-on-a-chip, University of Twente, Enschede, P.O. Box 217, 7500AE, The Netherlands
| | - Yuliang Wang
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, Beijing, 100191, P. R. China
- Ningbo Institute of Technology, Beihang University, Ningbo, 315832, P. R. China
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Pietsch M, Christiaens D, Hajnal JV, Tournier JD. dStripe: Slice artefact correction in diffusion MRI via constrained neural network. Med Image Anal 2021; 74:102255. [PMID: 34634644 PMCID: PMC8566280 DOI: 10.1016/j.media.2021.102255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 11/25/2022]
Abstract
dStripe allows removing inter-slice intensity artefacts in the presence of motion. It is not tied to a particular q-space sampling scheme or motion correction method. Can be trained in the absence of ground truth data. Uses explicit constraints that locally preserve in-plane image contrast.
MRI scanner and sequence imperfections and advances in reconstruction and imaging techniques to increase motion robustness can lead to inter-slice intensity variations in Echo Planar Imaging. Leveraging deep convolutional neural networks as universal image filters, we present a data-driven method for the correction of acquisition artefacts that manifest as inter-slice inconsistencies, regardless of their origin. This technique can be applied to motion- and dropout-artefacted data by embedding it in a reconstruction pipeline. The network is trained in the absence of ground-truth data on, and finally applied to, the reconstructed multi-shell high angular resolution diffusion imaging signal to produce a corrective slice intensity modulation field. This correction can be performed in either motion-corrected or scattered source-space. We focus on gaining control over the learned filter and the image data consistency via built-in spatial frequency and intensity constraints. The end product is a corrected image reconstructed from the original raw data, modulated by a multiplicative field that can be inspected and verified to match the expected features of the artefact. In-plane, the correction approximately preserves the contrast of the diffusion signal and throughout the image series, it reduces inter-slice inconsistencies within and across subjects without biasing the data. We apply our pipeline to enhance the super-resolution reconstruction of neonatal multi-shell high angular resolution data as acquired in the developing Human Connectome Project.
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Affiliation(s)
- Maximilian Pietsch
- Centre for Medical Engineering, King's College London, London, UK; Centre for the Developing Brain, King's College London, London, UK; Department of Forensic & Neurodevelopmental Sciences, King's College London, London, UK.
| | - Daan Christiaens
- Centre for the Developing Brain, King's College London, London, UK; Department of Electrical Engineering, ESAT/PSI, KU Leuven, Leuven, Belgium
| | - Joseph V Hajnal
- Centre for Medical Engineering, King's College London, London, UK; Centre for the Developing Brain, King's College London, London, UK
| | - J-Donald Tournier
- Centre for Medical Engineering, King's College London, London, UK; Centre for the Developing Brain, King's College London, London, UK
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Azuri I, Rosenhek-Goldian I, Regev-Rudzki N, Fantner G, Cohen SR. The role of convolutional neural networks in scanning probe microscopy: a review. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2021; 12:878-901. [PMID: 34476169 PMCID: PMC8372315 DOI: 10.3762/bjnano.12.66] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/23/2021] [Indexed: 05/13/2023]
Abstract
Progress in computing capabilities has enhanced science in many ways. In recent years, various branches of machine learning have been the key facilitators in forging new paths, ranging from categorizing big data to instrumental control, from materials design through image analysis. Deep learning has the ability to identify abstract characteristics embedded within a data set, subsequently using that association to categorize, identify, and isolate subsets of the data. Scanning probe microscopy measures multimodal surface properties, combining morphology with electronic, mechanical, and other characteristics. In this review, we focus on a subset of deep learning algorithms, that is, convolutional neural networks, and how it is transforming the acquisition and analysis of scanning probe data.
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Affiliation(s)
- Ido Azuri
- Weizmann Institute of Science, Department of Life Sciences Core Facilities, Rehovot 76100, Israel
| | - Irit Rosenhek-Goldian
- Weizmann Institute of Science, Department of Chemical Research Support, Rehovot 76100, Israel
| | - Neta Regev-Rudzki
- Weizmann Institute of Science, Department of Biomolecular Sciences, Rehovot 76100, Israel
| | - Georg Fantner
- École Polytechnique Fédérale de Lausanne, Laboratory for Bio- and Nano-Instrumentation, CH1015 Lausanne, Switzerland
| | - Sidney R Cohen
- Weizmann Institute of Science, Department of Chemical Research Support, Rehovot 76100, Israel
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Watanabe-Nakayama T, Ono K. Acquisition and processing of high-speed atomic force microscopy videos for single amyloid aggregate observation. Methods 2021; 197:4-12. [PMID: 34107352 DOI: 10.1016/j.ymeth.2021.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/19/2021] [Accepted: 06/03/2021] [Indexed: 11/30/2022] Open
Abstract
The structural dynamics of the amyloid protein aggregation process are associated with neurodegenerative diseases, including Alzheimer's disease and Parkinson's disease. High-speed atomic force microscopy (HS-AFM) is able to visualize the structural dynamics of individual aggregate species that otherwise cannot be distinguished. HS-AFM observations also detect impurities in the sample, and thus, experiments require relatively high sample purity. To derive valid information regarding the structural dynamics of the sample from the high-speed AFM images, a correction of the influence caused by the drift of the stage (scanner) from all frames is required. However, correcting the HS-AFM videos that consist of a large number of images requires significant effort. Here, using HS-AFM observation of α-synuclein fibril elongation as an example, we propose an HS-AFM image processing procedure to correct stage drift in the x-, y-, and z-directions with the free software ImageJ. ImageJ with default settings and our plugins attached to this article can process and analyze image stacks, which allow users to easily detect and show the temporal change in sample structures. This processing method can be automatically applied to numerous HS-AFM videos by batch processing with a series of ImageJ macrofunctions.
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Affiliation(s)
- Takahiro Watanabe-Nakayama
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
| | - Kenjiro Ono
- Division of Neurology, Department of Internal Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8666, Japan.
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Elkarkri Y, Li X, Zeng B, Lian Z, Zhou J, Wang Y. Laser photonic nanojets triggered thermoplasmonic micro/nanofabrication of polymer materials for enhanced resolution. NANOTECHNOLOGY 2021; 32:145301. [PMID: 33316785 DOI: 10.1088/1361-6528/abd35b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Micro/nanofabrication of polymer materials is of interest for micro/nanofluidic systems. Due to the optical diffraction limit, it remains a challenge to achieve nanoscale resolution fabrication using an ordinary continuous-wave laser system. In this study, we therefore propose a laser photonic nanojet-based micro/nanofabrication method for polymer materials using a low-power and low-cost continuous-wave laser. The photonic nanojets were produced using glass microspheres. Moreover, a thermoplasmonic effect was employed by depositing a gold layer beneath the polymer films. By applying the photonic nanojet triggered thermoplasmonics, sub-micrometer surface structures, as well as their arrays, were fabricated with a laser power threshold value down to 10 mW. The influences of the microsphere diameters, and thicknesses of gold layers and polymer films on the fabricated microstructures were systematically investigated, which aligns well with the finite-difference time-domain simulation results.
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Affiliation(s)
- Yahya Elkarkri
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, 100191, People's Republic of China
| | - Xiaolai Li
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, 100191, People's Republic of China
| | - Binglin Zeng
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, 100191, People's Republic of China
| | - Zhaoxin Lian
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, 100191, People's Republic of China
| | - Ji Zhou
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, 100191, People's Republic of China
| | - Yuliang Wang
- Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, 100191, People's Republic of China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, 100191, People's Republic of China
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6
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Zeng B, Wang Y, Zaytsev ME, Xia C, Zandvliet HJW, Lohse D. Giant plasmonic bubbles nucleation under different ambient pressures. Phys Rev E 2020; 102:063109. [PMID: 33466073 DOI: 10.1103/physreve.102.063109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 12/08/2020] [Indexed: 11/07/2022]
Abstract
Water-immersed gold nanoparticles irradiated by a laser can trigger the nucleation of plasmonic bubbles after a delay time of a few microseconds [Wang et al., Proc. Natl. Acad. Sci. USA 122, 9253 (2018)]. Here we systematically investigated the light-vapor conversion efficiency, η, of these plasmonic bubbles as a function of the ambient pressure. The efficiency of the formation of these initial-phase and mainly water-vapor containing bubbles, which is defined as the ratio of the energy that is required to form the vapor bubbles and the total energy dumped in the gold nanoparticles before nucleation of the bubble by the laser, can be as high as 25%. The amount of vaporized water first scales linearly with the total laser energy dumped in the gold nanoparticles before nucleation, but for larger energies the amount of vaporized water levels off. The efficiency η decreases with increasing ambient pressure. The experimental observations can be quantitatively understood within a theoretical framework based on the thermal diffusion equation and the thermal dynamics of the phase transition.
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Affiliation(s)
- Binglin Zeng
- School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, China.,Physics of Fluids Group, Department of Applied Physics and J. M. Burgers Centre for Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, China.,Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Yuliang Wang
- School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, China.,Physics of Fluids Group, Department of Applied Physics and J. M. Burgers Centre for Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.,Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, China
| | - Mikhail E Zaytsev
- Physics of Fluids Group, Department of Applied Physics and J. M. Burgers Centre for Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.,Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Chenliang Xia
- School of Mechanical Engineering and Automation, Beihang University, 37 Xueyuan Rd, Haidian District, Beijing, China
| | - Harold J W Zandvliet
- Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands
| | - Detlef Lohse
- Physics of Fluids Group, Department of Applied Physics and J. M. Burgers Centre for Fluid Dynamics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.,Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
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7
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Li X, Wang Y, Zaytsev ME, Lajoinie G, Le The H, Bomer JG, Eijkel JCT, Zandvliet HJW, Zhang X, Lohse D. Plasmonic Bubble Nucleation and Growth in Water: Effect of Dissolved Air. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2019; 123:23586-23593. [PMID: 31583035 PMCID: PMC6768170 DOI: 10.1021/acs.jpcc.9b05374] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/23/2019] [Indexed: 05/05/2023]
Abstract
Under continuous laser irradiation, noble metal nanoparticles immersed in water can quickly heat up, leading to the nucleation of so-called plasmonic bubbles. In this work, we want to further understand the bubble nucleation and growth mechanism. In particular, we quantitatively study the effect of the amount of dissolved air on the bubble nucleation and growth dynamics, both for the initial giant bubble, which forms shortly after switching on the laser and is mainly composed of vapor, and for the final life phase of the bubble, during which it mainly contains air expelled from water. We found that the bubble nucleation temperature depends on the gas concentration: the higher the gas concentration, the lower the bubble nucleation temperature. Also, the long-term diffusion-dominated bubble growth is governed by the gas concentration. The radius of the bubbles grows as R(t) ∝ t 1/3 for air-equilibrated and air-oversaturated water. In contrast, in partially degassed water, the growth is much slower since, even for the highest temperature we achieve, the water remains undersaturated.
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Affiliation(s)
- Xiaolai Li
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
- Robotics Institute,
School of Mechanical Engineering and Automation and Beijing Advanced Innovation
Center for Biomedical Engineering, Beihang
University, 37 Xueyuan Road, Haidian District, Beijing 100191, P.R. China
| | - Yuliang Wang
- Robotics Institute,
School of Mechanical Engineering and Automation and Beijing Advanced Innovation
Center for Biomedical Engineering, Beihang
University, 37 Xueyuan Road, Haidian District, Beijing 100191, P.R. China
- E-mail: (Y.W.)
| | - Mikhail E. Zaytsev
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Guillaume Lajoinie
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Hai Le The
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Johan G. Bomer
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Jan C. T. Eijkel
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Harold J. W. Zandvliet
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
| | - Xuehua Zhang
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
- Department
of Chemical and Materials Engineering, Donadeo Innovation Centre for
Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Detlef Lohse
- Physics
of Fluids, Max Planck Center Twente for Complex Fluid Dynamics
and J.M. Burgers Centre for Fluid Mechanics, MESA+ Institute, Physics of Interfaces
and Nanomaterials, MESA+ Institute, TechMed Centre, and BIOS Lab-on-a-Chip, MESA+ Institute, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands
- Max
Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
- E-mail: (D.L.)
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