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Li F, Wei J, Qin X, Chen X, Chen D, Zhang W, Han J, Yuan L, Deng H. Thermo-optical tweezers based on photothermal waveguides. MICROSYSTEMS & NANOENGINEERING 2024; 10:123. [PMID: 39223148 PMCID: PMC11368956 DOI: 10.1038/s41378-024-00757-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 06/03/2024] [Accepted: 06/19/2024] [Indexed: 09/04/2024]
Abstract
Field-controlled micromanipulation represents a pivotal technique for handling microparticles, yet conventional methods often risk physical damage to targets. Here, we discovered a completely new mechanism for true noncontact manipulation through photothermal effects, called thermal-optical tweezers. We employ a laser self-assembly photothermal waveguide (PTW) for dynamic microparticle manipulation. This waveguide demonstrates superior photothermal conversion and precision control, generating a nonisothermal temperature field. The interaction of thermal convection and thermophoresis within this field creates a microfluidic potential well, enabling noncontact and nondestructive particle manipulation. By varying the path of PTWs in lithography and manipulating laser loading modes, diverse manipulation strategies, such as Z-shaped migration, periodic oscillation, and directional transport, are achievable. Our innovative noninvasive micromanipulation technology minimizes not only physical damage to target objects but also enables precise and diverse manipulation of micro entities, opening up new avenues for the photothermal control of cells and biomolecules.
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Affiliation(s)
- Fuwang Li
- Photonics Research Center, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Jian Wei
- Photonics Research Center, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Xiaomei Qin
- Photonics Research Center, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Xue Chen
- School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, 541004, China.
| | - Dawei Chen
- Photonics Research Center, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Wentao Zhang
- Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Jiaguang Han
- Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
- Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, and the Key Laboratory of Optoelectronics Information and Technology (Ministry of Education), Tianjin University, Tianjin, 300072, China
| | - Libo Yuan
- Photonics Research Center, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
| | - Hongchang Deng
- Photonics Research Center, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin, 541004, China.
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2
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Nalupurackal G, Singh J, Roy S, Lokesh M, Chakraborty S, Goswami J, Bhattacharya A, Sinha Mahapatra P, Ganesan AR, Roy B. Estimation of the proximal temperature rise of an excited upconversion particle by detecting the wavefront of emission. OPTICS EXPRESS 2024; 32:6011-6024. [PMID: 38439314 DOI: 10.1364/oe.514938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/04/2024] [Indexed: 03/06/2024]
Abstract
Monitoring the temperature distribution within a local environment at the micro and nanoscale is vital as many processes are solely thermal. Various thermometric techniques have been explored in the community, and out of these, fluorescent nano/micro particle-based mechanisms are accepted widely (fluorescence intensity ratio (FIR) techniques, where the ratio of populations in two consecutive energy levels is compared with Boltzmann distribution). We describe a new technique to account for the temperature rise near an illuminated upconverting particle (UCP) using wavefront imaging, which is more sensitive than the conventional thermometric techniques on the microscale. We rely on a thermo-optical phase microscopic technique by reconstructing the wavefront of emission from an upconverting particle using a Shack-Hartmann wavefront sensor. The wavefront maps the local phase distribution, which is an indicator of the surroundings' optical parameters, particularly the suspended medium's temperature-induced refractive index in the presence of convection currents. We describe how these extracted phase values can provide information about the optical heating due to the particle and hence its local environment along the direction of the emission. Our findings demonstrate the detection of a minimum temperature rise of 0.23 K, while the FIR methods indicate a minimum of 0.3 K rise. This technique is used to study the temperature increase in the backscattered direction for an upconverting particle illuminated on pump resonance. We also estimate the Soret coefficient for an upconverting particle optically trapped on pump resonance and experiencing anisotropic heating across the body.
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3
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Lefevre A, Gauthier M, Bourgeois P, Frelet-Barrand A, Bolopion A. Automatic trajectory control of single cells using dielectrophoresis based on visual feedback. LAB ON A CHIP 2023. [PMID: 37470089 DOI: 10.1039/d3lc00318c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
This paper deals with the automatic control of the trajectory of T-lymphocytes using dielectrophoretic (DEP) actuation. Dielectrophoresis is a physical phenomenon induced by a non-uniform electric field enabling application of a force on a dielectric object. In most of the cases, it is used in a passive way. The electric field is in a steady state and the force applied on the cells depends on the cell's characteristics and position inside the channel. These systems are limited as cells with similar characteristics will undergo the same forces. To overcome this issue, active devices where the electric field changes over time were developed. However, the voltages that should be applied to generate the desired electric field are mostly computed offline using finite element methods. Thus, there is a low number of devices using automatic approaches with dielectrophoretic actuation where the electric field is computed and updated in real time based on the current position of the cell. We propose here an experimental bench used to study the automatic trajectory control of cells by dielectrophoresis. The computation of the dielectrophoretic force is done online with a model based on the Fourier series depending on the cell's characteristics, position and electric field. This model allows the use of a controller based on visual feedback running at 120 Hz to control the position of cells inside a microfluidic chip. As cells are sensitive to the electric field, the controller limits the norm of the electric field while maximizing the gradient to maximize the DEP force. Experiments have been performed and T-lymphocytes were successfully steered along several types of trajectories at a speed of five times their size per second. The mean error along those trajectories is below 2 μm. The viability of the cells has been checked after the experiments and confirms that this active DEP actuation does not harm the cells.
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Affiliation(s)
- Alexis Lefevre
- Université de FrancheComté, CNRS, SUPMICROTECH, Institute FEMTO-ST, F25000 Besançon, France.
| | - Michaël Gauthier
- Université de FrancheComté, CNRS, SUPMICROTECH, Institute FEMTO-ST, F25000 Besançon, France.
| | - Pauline Bourgeois
- Université de FrancheComté, CNRS, SUPMICROTECH, Institute FEMTO-ST, F25000 Besançon, France.
| | - Annie Frelet-Barrand
- Université de FrancheComté, CNRS, SUPMICROTECH, Institute FEMTO-ST, F25000 Besançon, France.
| | - Aude Bolopion
- Université de FrancheComté, CNRS, SUPMICROTECH, Institute FEMTO-ST, F25000 Besançon, France.
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4
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Nalupurackal G, Panja K, Chakraborty S, Roy S, Goswami J, Roy B, Singh R. Controlled roll rotation of a microparticle in a hydro-thermophoretic trap. PHYSICAL REVIEW RESEARCH 2023; 5:033005. [PMID: 37675386 PMCID: PMC7615027 DOI: 10.1103/physrevresearch.5.033005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
In recent years, there has been a growing interest in controlling the motion of microparticles inside and outside a focused laser beam. A hydro-thermophoretic trap was recently reported [Nalupurackal et al., Soft Matter 18, 6825 (2022)], which can trap and manipulate microparticles and living cells outside a laser beam. Briefly, a hydro-thermophoretic trap works by the competition between thermoplasmonic flows due to laser heating of a substrate and thermophoresis away from the hotspot of the laser. Here, we extend that work to demonstrate the controlled roll rotation of a microparticle in a hydro-thermophoretic trap using experiments and theory. We experimentally measure the roll angular velocity of the trapped particle. We predict this roll rotation from theoretical computation of the fluid flow. The expression for the angular velocity fits the experimental data. Our method has potential applications in microrheology by employing a different mode of rotation.
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Affiliation(s)
- Gokul Nalupurackal
- Department of Physics, Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), IIT Madras, Chennai 600036, India
| | - Kingshuk Panja
- Department of Physics, IIT Madras, Chennai 600036, India
| | - Snigdhadev Chakraborty
- Department of Physics, Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), IIT Madras, Chennai 600036, India
| | - Srestha Roy
- Department of Physics, Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), IIT Madras, Chennai 600036, India
| | - Jayesh Goswami
- Department of Physics, Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), IIT Madras, Chennai 600036, India
| | - Basudev Roy
- Department of Physics, Quantum Centre of Excellence for Diamond and Emergent Materials (QuCenDiEM), IIT Madras, Chennai 600036, India
| | - Rajesh Singh
- Department of Physics, IIT Madras, Chennai 600036, India
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Lan H, Qian J, Liu Y, Lu S, Zhang B, Huang L, Hu X, Zhang W. Swirl-like Acoustofluidic Stirring Facilitates Microscale Reactions in Sessile Droplets. MICROMACHINES 2023; 14:837. [PMID: 37421070 DOI: 10.3390/mi14040837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/17/2023] [Accepted: 04/08/2023] [Indexed: 07/09/2023]
Abstract
Sessile droplets play a crucial role in the microreactors of biochemical samples. Acoustofluidics provide a non-contact and label-free method for manipulating particles, cells, and chemical analytes in droplets. In the present study, we propose a micro-stirring application based on acoustic swirls in sessile droplets. The acoustic swirls are formed inside the droplets by asymmetric coupling of surface acoustic waves (SAWs). With the merits of the slanted design of the interdigital electrode, the excitation position of SAWs is selective by sweeping in wide frequency ranges, allowing for the droplet position to be customized within the aperture region. We verify the reasonable existence of acoustic swirls in sessile droplets by a combination of simulations and experiments. The different periphery of the droplet meeting with SAWs will produce acoustic streaming phenomena with different intensities. The experiments demonstrate that acoustic swirls formed after SAWs encountering droplet boundaries will be more obvious. The acoustic swirls have strong stirring abilities to rapidly dissolve the yeast cell powder granules. Therefore, acoustic swirls are expected to be an effective means for rapid stirring of biomolecules and chemicals, providing a new approach to micro-stirring in biomedicine and chemistry.
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Affiliation(s)
- Huaize Lan
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Hefei University of Technology, Hefei 230009, China
| | - Jingui Qian
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Hefei University of Technology, Hefei 230009, China
| | - Yansong Liu
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Hefei University of Technology, Hefei 230009, China
| | - Shanshan Lu
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Hefei University of Technology, Hefei 230009, China
| | - Bowei Zhang
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Hefei University of Technology, Hefei 230009, China
| | - Liang Huang
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xuefeng Hu
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Hefei University of Technology, Hefei 230009, China
| | - Wei Zhang
- Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Hefei University of Technology, Hefei 230009, China
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6
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Ding H, Chen Z, Ponce C, Zheng Y. Optothermal rotation of micro-/nano-objects. Chem Commun (Camb) 2023; 59:2208-2221. [PMID: 36723196 PMCID: PMC10189788 DOI: 10.1039/d2cc06955e] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 01/25/2023] [Indexed: 01/27/2023]
Abstract
Due to its contactless and fuel-free operation, optical rotation of micro-/nano-objects provides tremendous opportunities for cellular biology, three-dimensional (3D) imaging, and micro/nanorobotics. However, complex optics, extremely high operational power, and the applicability to limited objects restrict the broader use of optical rotation techniques. This Feature Article focuses on a rapidly emerging class of optical rotation techniques, termed optothermal rotation. Based on light-mediated thermal phenomena, optothermal rotation techniques overcome the bottlenecks of conventional optical rotation by enabling versatile rotary control of arbitrary objects with simpler optics using lower powers. We start with the fundamental thermal phenomena and concepts: thermophoresis, thermoelectricity, thermo-electrokinetics, thermo-osmosis, thermal convection, thermo-capillarity, and photophoresis. Then, we highlight various optothermal rotation techniques, categorizing them based on their rotation modes (i.e., in-plane and out-of-plane rotation) and the thermal phenomena involved. Next, we explore the potential applications of these optothermal manipulation techniques in areas such as single-cell mechanics, 3D bio-imaging, and micro/nanomotors. We conclude the Feature Article with our insights on the operating guidelines, existing challenges, and future directions of optothermal rotation.
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Affiliation(s)
- Hongru Ding
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Zhihan Chen
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA.
| | - Carolina Ponce
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Yuebing Zheng
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA.
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7
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Ding H, Chen Z, Ponce C, Zheng Y. Optothermal rotation of micro-/nano-objects in liquids. ARXIV 2023:arXiv:2301.04297v2. [PMID: 36713256 PMCID: PMC9882580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Controllable rotation of micro-/nano-objects provides tremendous opportunities for cellular biology, three-dimensional (3D) imaging, and micro/nanorobotics. Among different rotation techniques, optical rotation is particularly attractive due to its contactless and fuel-free operation. However, optical rotation precision is typically impaired by the intrinsic optical heating of the target objects. Optothermal rotation, which harnesses light-modulated thermal effects, features simpler optics, lower operational power, and higher applicability to various objects. In this Feature Article, we discuss the recent progress of optothermal rotation with a focus on work from our research group. We categorize the various rotation techniques based on distinct physical mechanisms, including thermophoresis, thermoelectricity, thermo-electrokinetics, thermo-osmosis, thermal convection, and thermo-capillarity. Benefiting from the different rotation modes (i.e., in-plane and out-of-plane rotation), diverse applications in single-cell mechanics, 3D bio-imaging, and micro/nanomotors are demonstrated. We conclude the article with our perspectives on the operating guidelines, existing challenges, and future directions of optothermal rotation.
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Affiliation(s)
- Hongru Ding
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Zhihan Chen
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Carolina Ponce
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Yuebing Zheng
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
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8
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Pan H, Mei D, Xu C, Weng W, Han S, Wang Y. Multifunctional Acoustofluidic Centrifuge Device Using Tri-Symmetrical Design for Particle Enrichment and Separation and Multiphase Microflow Mixing. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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9
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Nalupurackal G, Gunaseelan M, Roy S, Lokesh M, Kumar S, Vaippully R, Singh R, Roy B. A hydro-thermophoretic trap for microparticles near a gold-coated substrate. SOFT MATTER 2022; 18:6825-6835. [PMID: 36040245 PMCID: PMC7613615 DOI: 10.1039/d2sm00627h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Optical tweezers have revolutionised micromanipulation from physics and biology to material science. However, the high laser power involved in optical trapping can damage biological samples. In this context, indirect trapping of microparticles and objects using fluid flow fields has assumed great importance. It has recently been shown that cells and particles can be turned in the pitch sense by opto-plasmonic heating of a gold surface constituting one side of a sample chamber. We extend that work to place two such hotspots in close proximity to each other to form a very unique configuration of flow fields forming an effective quasi-three-dimensional 'trap', assisted by thermophoresis. This is effectively a harmonic trap confining particles in all three dimensions without relying on other factors to confine the particles close to the surface. We use this to show indirect trapping of different types of upconverting particles and cells, and also show that we can approach a trap stiffness of 40 fN μm-1 indicating a weak confinement regime without relying on feedback.
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Affiliation(s)
- Gokul Nalupurackal
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, IIT Madras, Chennai 600036, India.
| | - M Gunaseelan
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, IIT Madras, Chennai 600036, India.
| | - Srestha Roy
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, IIT Madras, Chennai 600036, India.
| | - Muruga Lokesh
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, IIT Madras, Chennai 600036, India.
| | - Sumeet Kumar
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, IIT Madras, Chennai 600036, India.
| | - Rahul Vaippully
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, IIT Madras, Chennai 600036, India.
| | - Rajesh Singh
- Department of Physics, IIT Madras, Chennai 600036, India.
| | - Basudev Roy
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, IIT Madras, Chennai 600036, India.
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Light-driven single-cell rotational adhesion frequency assay. ELIGHT 2022; 2:13. [PMID: 35965781 PMCID: PMC9358104 DOI: 10.1186/s43593-022-00020-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/28/2022] [Accepted: 07/07/2022] [Indexed: 01/13/2023]
Abstract
The interaction between cell surface receptors and extracellular ligands is highly related to many physiological processes in living systems. Many techniques have been developed to measure the ligand-receptor binding kinetics at the single-cell level. However, few techniques can measure the physiologically relevant shear binding affinity over a single cell in the clinical environment. Here, we develop a new optical technique, termed single-cell rotational adhesion frequency assay (scRAFA), that mimics in vivo cell adhesion to achieve label-free determination of both homogeneous and heterogeneous binding kinetics of targeted cells at the subcellular level. Moreover, the scRAFA is also applicable to analyze the binding affinities on a single cell in native human biofluids. With its superior performance and general applicability, scRAFA is expected to find applications in study of the spatial organization of cell surface receptors and diagnosis of infectious diseases.
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Liu Y, Ding H, Li J, Lou X, Yang M, Zheng Y. Light-driven single-cell rotational adhesion frequency assay. ELIGHT 2022; 2:13. [PMID: 35965781 DOI: 10.1186/s43593-022-00013-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/28/2022] [Accepted: 07/07/2022] [Indexed: 05/23/2023]
Abstract
UNLABELLED The interaction between cell surface receptors and extracellular ligands is highly related to many physiological processes in living systems. Many techniques have been developed to measure the ligand-receptor binding kinetics at the single-cell level. However, few techniques can measure the physiologically relevant shear binding affinity over a single cell in the clinical environment. Here, we develop a new optical technique, termed single-cell rotational adhesion frequency assay (scRAFA), that mimics in vivo cell adhesion to achieve label-free determination of both homogeneous and heterogeneous binding kinetics of targeted cells at the subcellular level. Moreover, the scRAFA is also applicable to analyze the binding affinities on a single cell in native human biofluids. With its superior performance and general applicability, scRAFA is expected to find applications in study of the spatial organization of cell surface receptors and diagnosis of infectious diseases. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1186/s43593-022-00020-4.
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Affiliation(s)
- Yaoran Liu
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712 USA
| | - Hongru Ding
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712 USA
| | - Jingang Li
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712 USA
| | - Xin Lou
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Mingcheng Yang
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049 China
- Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China
- Songshan Lake Materials Laboratory, Dongguan, 523808 Guangdong China
| | - Yuebing Zheng
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78712 USA
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712 USA
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712 USA
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712 USA
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Lokesh M, Nalupurackal G, Roy S, Chakraborty S, Goswami J, Gunaseelan M, Roy B. Generation of partial roll rotation in a hexagonal NaYF 4 particle by switching between different optical trapping configurations. OPTICS EXPRESS 2022; 30:28325-28334. [PMID: 35919192 PMCID: PMC7613164 DOI: 10.1364/oe.462932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
Typically a rigid body can have three degrees of rotational freedom. Among these, there can be two types of out-of-plane rotational modes, called the pitch and the roll. The pitch motion is typically to turn the particle along an axis orthogonal to the axis of symmetry. However, rotation about the axis of symmetry (called the roll motion) has so far not been shown in optical tweezers. It is here that we use a hexagonal shaped particle (NaYF4) which prefers to align side on with the optical tweezers [Rodriguez-Sevilla et al., Nano Letters 16, 8005 (2016)]. In this work, we find that the stable configuration of the hexagonal particle changes while using one beam and two beams, so that when one of the tweezers beams is switched on and off, the particle tends to switch between the different configurations. Thus we get a controlled roll motion. This is the first time that controlled partial roll motions have been generated in optical tweezers.
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Chakraborty S, Nalupurackal G, Gunaseelan M, Roy S, Lokesh M, Goswami J, Datta P, Mahapatra PS, Roy B. Facets of optically and magnetically induced heating in ferromagnetically doped-NaYF 4 particles. JOURNAL OF PHYSICS COMMUNICATIONS 2022; 7:065008. [PMID: 37398924 PMCID: PMC7614712 DOI: 10.1088/2399-6528/acde43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Upconverting particles like Yb and Er-doped NaYF4 are known to heat up after illumination with light at pump wavelength due to inefficient upconversion processes. Here we show that NaYF4 particles which have been co-doped not only with Yb and Er but also Fe improves the photothermal conversion efficiency. In addition, we show for the first time that alternating magnetic fields also heat up the ferromagnetic particles. Thereafter we show that a combination of optical and magnetic stimuli significantly increases the heat generated by the particles.
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Affiliation(s)
- Snigdhadev Chakraborty
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Gokul Nalupurackal
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, Indian Institute of Technology Madras, Chennai, 600036, India
| | - M Gunaseelan
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, Indian Institute of Technology Madras, Chennai, 600036, India
- Department of Physics, Rathinam Research Hub, Rathinam College of Arts and Science, Coimbatore, 641021, India
| | - Srestha Roy
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Muruga Lokesh
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Jayesh Goswami
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Priyankan Datta
- Department of Mechanical engineering, Indian Institute of Technology Madras, India
| | | | - Basudev Roy
- Department of Physics, Quantum Centres in Diamond and Emergent Materials (QuCenDiEM)-group, Micro Nano and Bio-Fluidics (MNBF)-Group, Indian Institute of Technology Madras, Chennai, 600036, India
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14
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Wang Y, Pan H, Mei D, Xu C, Weng W. Programmable motion control and trajectory manipulation of microparticles through tri-directional symmetrical acoustic tweezers. LAB ON A CHIP 2022; 22:1149-1161. [PMID: 35134105 DOI: 10.1039/d2lc00046f] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Acoustic tweezers based on travelling surface acoustic waves (TSAWs) have the potential for contactless trajectory manipulation and motion-parameter regulation of microparticles in biological and microfluidic applications. Here, we present a novel design of a tri-directional symmetrical acoustic tweezers device that enables the precise manipulation of linear, clockwise, and anticlockwise trajectories of microparticles. By switching the excitation combinations of interdigital electrodes (IDTs), various shape patterns of acoustic pressure fields can be formed to capture and steer microparticles accurately according to pre-defined trajectories. Numerical simulations and experimental tests were conducted in this study. By adjusting the input electric signals and the fluid's viscosity, the device is able to manipulate microparticles of various forms as well as brine shrimp egg cells with the accurate modulation of motion parameters. The results show that the proposed programmable design possesses low-cost, compact, non-contact, and high biocompatibility benefits, with the capacity to accurately manage microparticles in a range of motion trajectories, independent of their physical and/or chemical characteristics. Thus, our design has strong potential applications in chemical composition analysis, drug delivery, and cell assembly.
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Affiliation(s)
- Yancheng Wang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Hemin Pan
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Deqing Mei
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Chengyao Xu
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Wanyu Weng
- Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
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15
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Abstract
Progress in optical manipulation has stimulated remarkable advances in a wide range of fields, including materials science, robotics, medical engineering, and nanotechnology. This Review focuses on an emerging class of optical manipulation techniques, termed heat-mediated optical manipulation. In comparison to conventional optical tweezers that rely on a tightly focused laser beam to trap objects, heat-mediated optical manipulation techniques exploit tailorable optothermo-matter interactions and rich mass transport dynamics to enable versatile control of matter of various compositions, shapes, and sizes. In addition to conventional tweezing, more distinct manipulation modes, including optothermal pulling, nudging, rotating, swimming, oscillating, and walking, have been demonstrated to enhance the functionalities using simple and low-power optics. We start with an introduction to basic physics involved in heat-mediated optical manipulation, highlighting major working mechanisms underpinning a variety of manipulation techniques. Next, we categorize the heat-mediated optical manipulation techniques based on different working mechanisms and discuss working modes, capabilities, and applications for each technique. We conclude this Review with our outlook on current challenges and future opportunities in this rapidly evolving field of heat-mediated optical manipulation.
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Affiliation(s)
- Zhihan Chen
- Materials Science & Engineering Program, Texas Materials Institute, and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jingang Li
- Materials Science & Engineering Program, Texas Materials Institute, and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yuebing Zheng
- Materials Science & Engineering Program, Texas Materials Institute, and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
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16
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Yamini S, Gunaseelan M, Gangadharan A, Lopez SA, Martirosyan KS, Girigoswami A, Roy B, Manonmani J, Jayaraman S. Upconversion, MRI imaging and optical trapping studies of silver nanoparticle decorated multifunctional NaGdF4:Yb,Er nanocomposite. NANOTECHNOLOGY 2021; 33. [PMID: 34753112 DOI: 10.1088/1361-6528/ac37e4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 11/09/2021] [Indexed: 05/16/2023]
Abstract
The multifunctional upconversion nanoparticles (UCNPs) are fascinating tool for biological applications. In the present work, photon upconverting NaGdF4:Yb,Er and Ag nanoparticles decorated NaGdF4:Yb,Er (NaGdF4:Yb,Er@Ag) nanoparticles were prepared using a simple polyol process. Rietveld refinement was performed for detailed crystal structural and phase fraction analysis. The morphology of the NaGdF4:Yb,Er@Ag was examined using high-resolution transmission electron microscope, which reveals silver nanoparticles of 8 nm in size were decorated over spherical shaped NaGdF4:Yb,Er nanoparticles with a mean particle size of 90 nm. The chemical compositions were confirmed by EDAX and inductively coupled plasma-optical emission spectrometry analyses. The upconversion luminescence (UCL) of NaGdF4:Yb,Er at 980 nm excitation showed an intense red emission. After incorporating the silver nanoparticles, the UCL intensity decreased due to weak scattering and surface plasmon resonance effect. The VSM magnetic measurement indicates both the UCNPs possess paramagnetic behaviour. The NaGdF4:Yb,Er@Ag showed computed tomography imaging. Magnetic resonance imaging study exhibited better T1 weighted relaxivity in the NaGdF4:Yb,Er than the commercial Gd-DOTA. For the first time, the optical trapping was successfully demonstrated for the upconversion NaGdF4:Yb,Er nanoparticle at near-infrared 980 nm light using an optical tweezer setup. The optically trapped UCNP possessing paramagnetic property exhibited a good optical trapping stiffness. The UCL of trapped single UCNP is recorded to explore the effect of the silver nanoparticles. The multifunctional properties for the NaGdF4:Yb,Er@Ag nanoparticle are demonstrated.
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Affiliation(s)
- S Yamini
- Department of Nuclear Physics, University of Madras, Chennai 600 025, Tamil Nadu, India
| | - M Gunaseelan
- Department of Nuclear Physics, University of Madras, Chennai 600 025, Tamil Nadu, India
- Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Ajithkumar Gangadharan
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249, United States of America
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Silverio A Lopez
- Department of Physics and Astronomy, The University of Texas Rio Grande Valley, 1201 W University Blvd, Brownsville, TX, 78520, United States of America
| | - Karen S Martirosyan
- Department of Physics and Astronomy, The University of Texas Rio Grande Valley, 1201 W University Blvd, Brownsville, TX, 78520, United States of America
| | - Agnishwar Girigoswami
- Faculty of Allied Health Sciences, Chettinad Academy of Research & Education, Kelambakkam, Tamil Nadu, India
| | - Basudev Roy
- Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - J Manonmani
- Department of Chemistry, Quaid-E-Millath Government College for Women (Autonomous), Chennai 600 002, Tamil Nadu, India
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17
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Lokesh M, Vaippully R, Bhallamudi VP, Prabhakar A, Roy B. Realization of pitch-rotational torque wrench in two-beam optical tweezers. JOURNAL OF PHYSICS COMMUNICATIONS 2021; 5:115016. [PMID: 34869919 PMCID: PMC7612066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
3D Pitch (out-of-plane) rotational motion has been generated in spherical particles by maneuvering the laser spots of holographic optical tweezers. However, since the spherical particles, which are required to minimise drag are perfectly isotropic, a controllable torque cannot be applied with it. It remains free to spin about any axis even after moving the tweezers beams. It is here that we trap birefringent particles of about 3 μm diameter in two tweezers beams and then change the depth of one of the beam foci controllably to generate a pitch rotational torque-wrench and avoid the free spinning of the particle. We also detect the rotation with newly developed pitch motion detection technique and apply controlled torques on the particle.
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Affiliation(s)
- Muruga Lokesh
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Rahul Vaippully
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Vidya P Bhallamudi
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Anil Prabhakar
- Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Basudev Roy
- Department of Physics, Indian Institute of Technology Madras, Chennai, 600036, India
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18
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Lokesh M, Vaippully R, Nalupurackal G, Roy S, Bhallamudi VP, Prabhakar A, Roy B. Estimation of rolling work of adhesion at the nanoscale with soft probing using optical tweezers. RSC Adv 2021; 11:34636-34642. [PMID: 34737851 PMCID: PMC8546490 DOI: 10.1039/d1ra06960h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/19/2021] [Indexed: 12/23/2022] Open
Abstract
Conventionally, the work of adhesion at the nanoscale is estimated using an atomic force microscope with a tip of the size of 10 nm. It is pressed into a surface with nano-Newton forces and then retracted to ascertain when the tip breaks away from the surface. Thus this ensures "hard probing" of a surface. However there can be another configuration where the particle is barely placed into the surface when the work of adhesion attaches the particle to the surface and this can be called "soft probing". In this configuration, if a birefringent particle is confined in linearly polarized optical tweezers, and then the surface is moved in the direction tangential to the plane, a rolling motion can be induced. Study of this rolling motion can also show the work of adhesion. We use this configuration to find the rolling work of adhesion of a 3 μm diameter birefringent particle on a glass surface. We go on to study the effects of changing the surface to a hydrophobic slippery surface like polydimethyl siloxane (PDMS). Then we go on to show that even 500 nm diameter diamonds bearing nitrogen vacancy (NV) centers which are birefringent due to the stresses on the crystal could also be trapped and rolled to generate pitch (out-of-plane rotation) motion with 50 nm contact diameters. We find that this mode of soft probing yields a work of adhesion of about 1 mJ m-2 while the conventional nanoscale probing with atomic force microscopes (AFM) yields about 50 mJ m-2.
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Affiliation(s)
- Muruga Lokesh
- Department of Physics, Indian Institute of Technology MadrasChennai600036India
| | - Rahul Vaippully
- Department of Physics, Indian Institute of Technology MadrasChennai600036India
| | - Gokul Nalupurackal
- Department of Physics, Indian Institute of Technology MadrasChennai600036India
| | - Srestha Roy
- Department of Physics, Indian Institute of Technology MadrasChennai600036India
| | - Vidya P. Bhallamudi
- Department of Physics, Indian Institute of Technology MadrasChennai600036India
| | - Anil Prabhakar
- Department of Electrical Engineering, Indian Institute of Technology MadrasChennai600036India
| | - Basudev Roy
- Department of Physics, Indian Institute of Technology MadrasChennai600036India
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19
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Kvåle Løvmo M, Pressl B, Thalhammer G, Ritsch-Marte M. Controlled orientation and sustained rotation of biological samples in a sono-optical microfluidic device. LAB ON A CHIP 2021; 21:1563-1578. [PMID: 33634305 DOI: 10.1039/d0lc01261k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In cell biology, recently developed technologies for studying suspended cell clusters, such as organoids or cancer spheroids, hold great promise relative to traditional 2D cell cultures. There is, however, growing awareness that sample confinement, such as fixation on a surface or embedding in a gel, has substantial impact on cell clusters. This creates a need for contact-less tools for 3D manipulation and inspection. This work addresses this demand by presenting a reconfigurable, hybrid sono-optical system for contact-free 3D manipulation and imaging, which is suitable for biological samples up to a few hundreds of micrometers in liquid suspension. In our sono-optical device, three independently addressable MHz transducers, an optically transparent top-transducer for levitation and two side-transducers, provide ultrasound excitation from three orthogonal directions. Steerable holographic optical tweezers give us an additional means of manipulation of the acoustically trapped specimen with high spatial resolution. We demonstrate how to control the reorientation or the spinning of complex samples, for instance for 3D visual inspection or for volumetric reconstruction. Whether continuous rotation or transient reorientation takes place depends on the strength of the acoustic radiation torque, arising from pressure gradients, compared to the acoustic viscous torque, arising from the shear forces at the viscous boundary layer around the particle. Based on numerical simulations and experimental insights, we develop a strategy to achieve a desired alignment or continuous rotation around a chosen axis, by tuning the relative strengths of the transducers and thus adjusting the relative contributions of viscous and radiation torques. The approach is widely applicable, as we discuss in several generic examples, with limitations dictated by size and shape asymmetry of the samples.
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Affiliation(s)
- Mia Kvåle Løvmo
- Institut für Biomedizinische Physik, Medizinische Universität Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria.
| | - Benedikt Pressl
- Institut für Biomedizinische Physik, Medizinische Universität Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria.
| | - Gregor Thalhammer
- Institut für Biomedizinische Physik, Medizinische Universität Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria.
| | - Monika Ritsch-Marte
- Institut für Biomedizinische Physik, Medizinische Universität Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria.
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