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Chen P, Li N, Chen X, Liang T, He P, Wang D, Hu H. Mass measurement under medium vacuum in optically levitated nanoparticles based on Maxwell speed distribution law. OPTICS EXPRESS 2024; 32:21806-21819. [PMID: 38859526 DOI: 10.1364/oe.525371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/15/2024] [Indexed: 06/12/2024]
Abstract
As one of the directions of optical levitation technology, the mass measurement of micro-nano particles has always been a research hotspot in extremely weak mechanical measurements. When nanoscale particles are trapped in an optical trap, parameters such as density, diameter, and shape are unknown. Here we propose what we believe to be a new method to measure mass by fitting particle motion information to the Maxwell speed distribution law, with an accuracy better than 7% at 10 mbar. This method has the characteristics of requiring no external driving force, no precise natural frequency, no prior information such as density, and non-destructive testing within the medium vacuum range. With the increasing iterations, the uncertainty of mass measurement is reduced, and the accuracy of mass measurement of levitated particles is verified under multiple air pressures. It provides what we believe is a new method for the future non-destructive testing of nanoscale particles, and provides an apparently new way for the sensing measurement and metrology application fields of levitation dynamics systems.
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2
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Wang S, Zhang Z, Ma X, Yue Y, Li K, Meng Y, Wu Y. Bidirectional and Stepwise Rotation of Cells and Particles Using Induced Charge Electroosmosis Vortexes. BIOSENSORS 2024; 14:112. [PMID: 38534219 PMCID: PMC10968096 DOI: 10.3390/bios14030112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/08/2024] [Accepted: 02/18/2024] [Indexed: 03/28/2024]
Abstract
The rotation of cells is of significant importance in various applications including bioimaging, biophysical analysis and microsurgery. Current methods usually require complicated fabrication processes. Herein, we proposed an induced charged electroosmosis (ICEO) based on a chip manipulation method for rotating cells. Under an AC electric field, symmetric ICEO flow microvortexes formed above the electrode surface can be used to trap and rotate cells. We have discussed the impact of ICEO and dielectrophoresis (DEP) under the experimental conditions. The capabilities of our method have been tested by investigating the precise rotation of yeast cells and K562 cells in a controllable manner. By adjusting the position of cells, the rotation direction can be changed based on the asymmetric ICEO microvortexes via applying a gate voltage to the gate electrode. Additionally, by applying a pulsed signal instead of a continuous signal, we can also precisely and flexibly rotate cells in a stepwise way. Our ICEO-based rotational manipulation method is an easy to use, biocompatible and low-cost technique, allowing rotation regardless of optical, magnetic or acoustic properties of the sample.
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Affiliation(s)
- Shaoxi Wang
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Zhexin Zhang
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
- State Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, University of Macau, Macau, China
- Faculty of Science and Technology, University of Macau, Macau, China
| | - Xun Ma
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Yuanbo Yue
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Kemu Li
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Yingqi Meng
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
| | - Yupan Wu
- School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, China; (S.W.); (Z.Z.); (X.M.); (K.L.); (Y.M.)
- Research & Development Institute, Northwestern Polytechnical University, Shenzhen 518000, China
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang 215400, China
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3
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Sakamoto K, Aoyama T, Takeuchi M, Hasegawa Y. Intuitive Cell Manipulation Microscope System with Haptic Device for Intracytoplasmic Sperm Injection Simplification. SENSORS (BASEL, SWITZERLAND) 2024; 24:711. [PMID: 38276402 PMCID: PMC10819291 DOI: 10.3390/s24020711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 01/27/2024]
Abstract
In recent years, the demand for effective intracytoplasmic sperm injection (ICSI) for the treatment of male infertility has increased. The ICSI operation is complicated as it involves delicate organs and requires a high level of skill. Several cell manipulation systems that do not require such skills have been proposed; notably, several automated methods are available for cell rotation. However, these methods are unfeasible for the delicate ICSI medical procedure because of safety issues. Thus, this study proposes a microscopic system that enables intuitive micropipette manipulation using a haptic device that safely and efficiently performs the entire ICSI procedure. The proposed system switches between field-of-view expansion and three-dimensional image presentation to present images according to the operational stage. In addition, the system enables intuitive pipette manipulation using a haptic device. Experiments were conducted on microbeads instead of oocytes. The results confirmed that the time required for the experimental task was improved by 52.6%, and the injection error was improved by 75.3% compared to those observed in the conventional system.
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Affiliation(s)
| | - Tadayoshi Aoyama
- Department of Micro-Nano Mechanical Science and Engineering, Nagoya University, Nagoya 464-8601, Japan
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4
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Wang Z, Chen X, Tian J, Wei J, Hu Y. Noncontact Manipulation of Intracellular Structure Based on Focused Surface Acoustic Waves. Anal Chem 2023; 95:827-835. [PMID: 36594897 DOI: 10.1021/acs.analchem.2c03007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cell orientation is essential in many applications in biology, medicine, and chemistry, such as cellular injection, intracellular biopsy, and genetic screening. However, the manual cell orientation technique is a trial-and-error approach, which suffers from low efficiency and low accuracy. Although several techniques have improved these issues to a certain extent, they still face problems deforming or disrupting cell membranes, physical damage to the intracellular structure, and limited particle size. This study proposes a noncontact and noninvasive cell orientation method that rotates a cell using surface acoustic waves (SAWs). To realize the acoustic cell orientation process, we have fabricated a microdevice consisting of two pairs of focused interdigital transducers (FIDTs). Instead of rotating the entire cell, the proposed method rotates the intracellular structure, the cytoplasm, directly through the cell membrane by acoustic force. We have tested the rotational manipulation process on 30 zebrafish embryos. The system was able to orientate a cell to a target orientation with a one-time success rate of 93%. Furthermore, the postoperation survival rate was 100%. Our acoustic rotational manipulation technique is noninvasive and easy to use, which provides a starting point for cell-manipulation-essential tasks, such as single-cell analysis, organism studies, and drug discovery.
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Affiliation(s)
- Zenan Wang
- Center for Cognitive Technology, Chinese Academy of Sciences Shenzhen Institutes of Advanced Technology, Guangdong518055, China
| | - Xiaotong Chen
- Center for Cognitive Technology, Chinese Academy of Sciences Shenzhen Institutes of Advanced Technology, Guangdong518055, China.,School of Electrical Engineering, University of Jinan, Jinan250022, Shandong, China
| | - Jun Tian
- Center for Cognitive Technology, Chinese Academy of Sciences Shenzhen Institutes of Advanced Technology, Guangdong518055, China.,School of Electrical Engineering, University of Jinan, Jinan250022, Shandong, China
| | - Jun Wei
- School of Electrical Engineering, University of Jinan, Jinan250022, Shandong, China
| | - Ying Hu
- Center for Cognitive Technology, Chinese Academy of Sciences Shenzhen Institutes of Advanced Technology, Guangdong518055, China
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5
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Arnold JA, Kalume A, Wang C, Videen G, Pan YL. Active, controlled circular, and spin-rotational movement of optically trapped airborne micro-particles. OPTICS LETTERS 2021; 46:5332-5335. [PMID: 34724468 DOI: 10.1364/ol.443506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 09/27/2021] [Indexed: 06/13/2023]
Abstract
We present a novel method for actively controlling circular and/or spin-rotational motion of an optically trapped airborne micro-particle. A 532-nm Gaussian laser beam is shaped into an elliptical ring by a pair of axicons and a cylindrical lens. The shaped beam is then focused into an elliptic cone that produces an optical trap. As the cylindrical lens is rotated, a torque is exerted on the trapped particle, resulting in circular or spin-rotational motion. We show examples of the circular-rotational movement as a function of laser power and the rotation rate of the cylindrical lens.
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6
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Yadav A, Dutta A, Kumar P, Dahan Y, Aranovich A, Feingold M. Optimal trapping stability of Escherichia coli in oscillating optical tweezers. Phys Rev E 2020; 101:062402. [PMID: 32688596 DOI: 10.1103/physreve.101.062402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/07/2020] [Indexed: 11/07/2022]
Abstract
Single-beam oscillating optical tweezers can be used to trap rod-shaped bacterial cells and align them with their long axis lying within the focal plane. While such configuration is useful for imaging applications, the corresponding imaging resolution is limited by the fluctuations of the trapped cell. We study the fluctuations of four of the coordinates of the trapped cell, two for its center of mass position and two for its angular orientation, showing the way they depend on the trap length and the trapping beam power. We find that optimal trapping stability is obtained when the trap length is about the same as the cell length and that cell fluctuations in the focal plane decrease like the inverse of the trapping power.
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Affiliation(s)
- Amarjeet Yadav
- Department of Physics and The Ilse Katz Center for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Anindita Dutta
- Department of Physics and The Ilse Katz Center for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Pramod Kumar
- Department of Physics and The Ilse Katz Center for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel.,Department of Physics, Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Yuval Dahan
- Department of Physics and The Ilse Katz Center for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Alexander Aranovich
- Department of Physics and The Ilse Katz Center for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Mario Feingold
- Department of Physics and The Ilse Katz Center for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
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Xu T, Wu S, Jiang Z, Wu X, Zhang Q. Regulating trapping energy for multi-object manipulation by random phase encoding. OPTICS LETTERS 2020; 45:2002-2005. [PMID: 32236053 DOI: 10.1364/ol.387223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
As known to all, optical tweezers depend intensely on trapping laser power. Therefore, the ability to separately regulate trapping power for each optical trap under a multi-object manipulation task empowers researchers with more flexibility and possibilities. Here, we introduce a simple strategy using complementary random binary phase design to achieve trapping energy assignment. The trap energy ratio can be expediently regulated by effective pixel numbers of the phase mask. We demonstrate the effectiveness and functionality of this approach by calibrating trap stiffness and directly measuring trapping power of each optical trap. In addition, we show the capability of rotating micro-beads with controlled speed and direction by supplying vortex beams with different energy ratios at specified positions. Our results imply that regulating the trap energy ratio will be of great significance in various applications, such as optical sorting and microfluidic scenarios.
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8
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Shishkin I, Markovich H, Roichman Y, Ginzburg P. Auxiliary Optomechanical Tools for 3D Cell Manipulation. MICROMACHINES 2020; 11:mi11010090. [PMID: 31941107 PMCID: PMC7020157 DOI: 10.3390/mi11010090] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/30/2019] [Accepted: 01/09/2020] [Indexed: 12/23/2022]
Abstract
Advances in laser and optoelectronic technologies have brought the general concept of optomechanical manipulation to the level of standard biophysical tools, paving the way towards controlled experiments and measurements of tiny mechanical forces. Recent developments in direct laser writing (DLW) have enabled the realization of new types of micron-scale optomechanical tools, capable of performing designated functions. Here we further develop the concept of DLW-fabricated optomechanically-driven tools and demonstrate full-3D manipulation capabilities over biological objects. In particular, we resolved the long-standing problem of out-of-plane rotation in a pure liquid, which was demonstrated on a living cell, clamped between a pair of forks, designed for efficient manipulation with holographic optical tweezers. The demonstrated concept paves the way for the realization of flexible tools for performing on-demand functions over biological objects, such as cell tomography and surgery to name just few.
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Affiliation(s)
- Ivan Shishkin
- Faculty of Physics and Engineering, ITMO University, Lomonosova 9, 191002 St. Petersburg, Russia
- School of Electrical Engineering, Tel Aviv University, Tel Aviv 69978, Israel; (H.M.); (P.G.)
- Light-Matter Interaction Centre, Tel Aviv University, Tel Aviv 69978, Israel;
- Correspondence:
| | - Hen Markovich
- School of Electrical Engineering, Tel Aviv University, Tel Aviv 69978, Israel; (H.M.); (P.G.)
- Light-Matter Interaction Centre, Tel Aviv University, Tel Aviv 69978, Israel;
| | - Yael Roichman
- Light-Matter Interaction Centre, Tel Aviv University, Tel Aviv 69978, Israel;
- School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
- School of Physics & Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
| | - Pavel Ginzburg
- School of Electrical Engineering, Tel Aviv University, Tel Aviv 69978, Israel; (H.M.); (P.G.)
- Light-Matter Interaction Centre, Tel Aviv University, Tel Aviv 69978, Israel;
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9
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Gerena E, Regnier S, Haliyo S. High-Bandwidth 3-D Multitrap Actuation Technique for 6-DoF Real-Time Control of Optical Robots. IEEE Robot Autom Lett 2019. [DOI: 10.1109/lra.2019.2892393] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Huang L, He W, Wang W. A cell electro-rotation micro-device using polarized cells as electrodes. Electrophoresis 2018; 40:784-791. [DOI: 10.1002/elps.201800360] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 09/28/2018] [Accepted: 10/08/2018] [Indexed: 01/18/2023]
Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument; Department of Precision Instrument; Tsinghua University; Beijing P. R. China
| | - Weihua He
- State Key Laboratory of Precision Measurement Technology and Instrument; Department of Precision Instrument; Tsinghua University; Beijing P. R. China
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument; Department of Precision Instrument; Tsinghua University; Beijing P. R. China
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11
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Huang L, Zhao P, Wang W. 3D cell electrorotation and imaging for measuring multiple cellular biophysical properties. LAB ON A CHIP 2018; 18:2359-2368. [PMID: 29946598 DOI: 10.1039/c8lc00407b] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
3D rotation is one of many fundamental manipulations to cells and imperative in a wide range of applications in single cell analysis involving biology, chemistry, physics and medicine. In this article, we report a dielectrophoresis-based, on-chip manipulation method that can load and rotate a single cell for 3D cell imaging and multiple biophysical property measurements. To achieve this, we trapped a single cell in constriction and subsequently released it to a rotation chamber formed by four sidewall electrodes and one transparent bottom electrode. In the rotation chamber, rotating electric fields were generated by applying appropriate AC signals to the electrodes for driving the single cell to rotate in 3D under control. The rotation spectrum for in-plane rotation was used to extract the cellular dielectric properties based on a spherical single-shell model, and the stacked images of out-of-plane cell rotation were used to reconstruct the 3D cell morphology to determine its geometric parameters. We have tested the capabilities of our method by rotating four representative mammalian cells including HeLa, C3H10, B lymphocyte, and HepaRG. Using our device, we quantified the area-specific membrane capacitance and cytoplasm conductivity for the four cells, and revealed the subtle difference of geometric parameters (i.e., surface area, volume, and roughness) by 3D cell imaging of cancer cells and normal leukocytes. Combining microfluidics, dielectrophoresis, and microscopic imaging techniques, our electrorotation-on-chip (EOC) technique is a versatile method for manipulating single cells under investigation and measuring their multiple biophysical properties.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
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12
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Abstract
Single-cell rotation is a fundamental manipulation used in a wide range of biotechnological applications such as cell injection and enucleation. However, there are currently few methods for the 3D rotation of single cells. Here, this chapter presents different biochip platforms based on a dielectrophoresis technique to achieve 3D rotation. In-plane (yaw) and out-of-plane rotation (pitch) can be achieved by applying different AC signal configurations, respectively. This use of 3D rotation facilitates several applications. For example, in-plane rotation can be used to measure the rotation spectra, and this can be used to estimate the dielectric parameters. The out-of-plane rotation can help reconstruct 3D cell models.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
| | - Peng Zhao
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
| | - Fei Liang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China.
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13
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Xie M, Shakoor A, Shen Y, Mills JK, Sun D. Out-of-Plane Rotation Control of Biological Cells With a Robot-Tweezers Manipulation System for Orientation-Based Cell Surgery. IEEE Trans Biomed Eng 2018; 66:199-207. [PMID: 29993395 DOI: 10.1109/tbme.2018.2828136] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In many cell surgery applications, cell must be oriented properly such that the microsurgery tool can access the target components with minimum damage to the cell. In this paper, a scheme for out of image plane orientation control of suspended biological cells using robotic controlled optical tweezers is presented for orientation-based cell surgery. Based on our previous work on planar cell rotation using optical tweezers, the dynamic model of cell out-of-plane orientation control is formulated by using the T-matrix approach. Vision-based algorithms are developed to extract the cell out of image plane orientation angles, based on 2-D image slices obtained under an optical microscope. A robust feedback controller is then proposed to achieve cell out-of-plane rotation. Experiments of automated out of image plane rotational control for cell nucleus extraction surgery are performed to demonstrate the effectiveness of the proposed approach. This approach advances robot-aided single cell manipulation and produces impactful benefits to cell surgery applications such as nucleus transplantation and organelle biopsy in precision medicine.
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14
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Emile O, Emile J. Rotation of millimeter-sized objects using ordinary light. OPTICS LETTERS 2016; 41:211-214. [PMID: 26766676 DOI: 10.1364/ol.41.000211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The ability to optically rotate bodies offers new degrees of control of micro-objects with applications in various domains, including microelectromechanical systems (MEMS), biomanipulations, or optofluidics. Here we demonstrate the optically-induced rotation of simple asymmetric two-dimensional objects using plane waves originating either from ordinary laser sources or from black body radiation. The objects are floating on an air/water interface. We observe a steady-state rotation depending on the light intensity and on the asymmetry of the object. We interpret this rotation in terms of light diffraction by the edges of the object. Such systems could be easily implemented in optofluidic devices to induce liquid flow without the need for special light sources.
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15
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Benhal P, Chase G, Gaynor P, Oback B, Wang W. Multiple-Cylindrical Electrode System for Rotational Electric Field Generation in Particle Rotation Applications. INT J ADV ROBOT SYST 2015. [DOI: 10.5772/60456] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Lab-on-a-chip micro-devices utilizing electric field-mediated particle movement provide advantages over current cell rotation techniques due to the flexibility in configuring micro-electrodes. Recent technological advances in micro-milling, three-dimensional (3D) printing and photolithography have facilitated fabrication of complex micro-electrode shapes. Using the finite-element method to simulate and optimize electric field induced particle movement systems can save time and cost by simplifying the analysis of electric fields within complex 3D structures. Here we investigated different 3D electrode structures to obtain and analyse rotational electric field vectors. Finite-element analysis was conducted by an electric current stationary solver based on charge relaxation theory. High-resolution data were obtained for three-, four-, six- and eight-cylindrical electrode arrangements to characterize the rotational fields. The results show that increasing the number of electrodes within a fixed circular boundary provides larger regions of constant amplitude rotational electric field. This is a very important finding in practice, as larger rotational regions with constant electric field amplitude make placement of cells into these regions, where cell rotation occurs, a simple task – enhancing flexibility in cell manipulation. Rotation of biological particles over the extended region would be useful for biotechnology applications which require guiding cells to a desired location, such as automation of nuclear transfer cloning.
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Affiliation(s)
- Prateek Benhal
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Geoffrey Chase
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Paul Gaynor
- Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand
| | - Björn Oback
- AgResearch Ruakura Research Centre, Hamilton, New Zealand
| | - Wenhui Wang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instruments, Tsinghua University, Beijing, China
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16
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Yu H, She W. Rotation dynamics of particles trapped in a rotating beam. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2015; 32:90-100. [PMID: 26366493 DOI: 10.1364/josaa.32.000090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The rotation dynamics of particles trapped in a rotating beam is theoretically investigated. We find that there is a critical angular speed for the rotating beam. If the angular speed of the rotating beam is smaller than the critical value, the angular velocity of the trapped particle is nearly the same as that of the rotating beam, which is in accord with existing experimental observation. Otherwise, the angular velocity of the trapped particles will become periodic or quasi-periodic with time, depending on the beam polarization, which, to the best of our knowledge, has not been previously reported. Moreover, we also propose some methods to determine the ratio between the beam power and the maximal angular speed of the trapped particle, which can be used to estimate the minimum power required to rotate the particle at a given angular speed.
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17
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Benhal P, Chase JG, Gaynor P, Oback B, Wang W. AC electric field induced dipole-based on-chip 3D cell rotation. LAB ON A CHIP 2014; 14:2717-27. [PMID: 24933556 DOI: 10.1039/c4lc00312h] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The precise rotation of suspended cells is one of the many fundamental manipulations used in a wide range of biotechnological applications such as cell injection and enucleation in nuclear transfer (NT) cloning. Noticeably scarce among the existing rotation techniques is the three-dimensional (3D) rotation of cells on a single chip. Here we present an alternating current (ac) induced electric field-based biochip platform, which has an open-top sub-mm square chamber enclosed by four sidewall electrodes and two bottom electrodes, to achieve rotation about the two axes, thus 3D cell rotation. By applying an ac potential to the four sidewall electrodes, an in-plane (yaw) rotating electric field is generated and in-plane rotation is achieved. Similarly, by applying an ac potential to two opposite sidewall electrodes and the two bottom electrodes, an out-of-plane (pitch) rotating electric field is generated and rolling rotation is achieved. As a prompt proof-of-concept, bottom electrodes were constructed with transparent indium tin oxide (ITO) using the standard lift-off process and the sidewall electrodes were constructed using a low-cost micro-milling process and then assembled to form the chip. Through experiments, we demonstrate rotation of bovine oocytes of ~120 μm diameter about two axes, with the capability of controlling the rotation direction and the rate for each axis through control of the ac potential amplitude, frequency, and phase shift, and cell medium conductivity. The maximum observed rotation rate reached nearly 140° s⁻¹, while a consistent rotation rate reached up to 40° s⁻¹. Rotation rate spectra for zona pellucida-intact and zona pellucida-free oocytes were further compared and found to have no effective difference. This simple, transparent, cheap-to-manufacture, and open-top platform allows additional functional modules to be integrated to become a more powerful cell manipulation system.
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Affiliation(s)
- Prateek Benhal
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand.
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18
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Tanaka Y, Wakida SI. Controlled 3D rotation of biological cells using optical multiple-force clamps. BIOMEDICAL OPTICS EXPRESS 2014; 5:2341-2348. [PMID: 25071968 PMCID: PMC4102368 DOI: 10.1364/boe.5.002341] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 06/09/2014] [Accepted: 06/13/2014] [Indexed: 06/03/2023]
Abstract
Controlled three-dimensional (3D) rotation of arbitrarily shaped objects in the observation space of optical microscopes is essential for realizing tomographic microscope imaging and offers great flexibility as a noncontact micromanipulation tool for biomedical applications. Herein, we present 3D rotational control of inhomogeneous biological samples using 3D optical multiple-force clamps based on time-shared scanning with a fast focus-tunable lens. For inhomogeneous samples with shape and optical anisotropy, we choose diatoms and their fragments, and demonstrate interactive and controlled 3D rotation about arbitrary axes in 3D Cartesian coordinates. We also outline the hardware setup and 3D rotation method for our demonstrations.
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19
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Shi X, Gao W, Wang J, Chao SH, Zhang W, Meldrum DR. Measuring gene expression in single bacterial cells: recent advances in methods and micro-devices. Crit Rev Biotechnol 2014; 35:448-60. [DOI: 10.3109/07388551.2014.899556] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Lei M, Li Z, Yan S, Yao B, Dan D, Qi Y, Qian J, Yang Y, Gao P, Ye T. Long-distance axial trapping with focused annular laser beams. PLoS One 2013; 8:e57984. [PMID: 23505449 PMCID: PMC3591451 DOI: 10.1371/journal.pone.0057984] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 01/29/2013] [Indexed: 11/19/2022] Open
Abstract
Focusing an annular laser beam can improve the axial trapping efficiency due to the reduction of the scattering force, which enables the use of a lower numerical aperture (NA) objective lens with a long working distance to trap particles in deeper aqueous medium. In this paper, we present an axicon-to-axicon scheme for producing parallel annular beams with the advantages of higher efficiency compared with the obstructed beam approach. The validity of the scheme is verified by the observation of a stable trapping of silica microspheres with relatively low NA microscope objective lenses (NA = 0.6 and 0.45), and the axial trapping depth of 5 mm is demonstrated in experiment.
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Affiliation(s)
- Ming Lei
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Ze Li
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Shaohui Yan
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Baoli Yao
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Dan Dan
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Yujiao Qi
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Jia Qian
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Yanlong Yang
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Peng Gao
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
| | - Tong Ye
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, China
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Carmon G, Fishov I, Feingold M. Oriented imaging of 3D subcellular structures in bacterial cells using optical tweezers. OPTICS LETTERS 2012; 37:440-442. [PMID: 22297379 DOI: 10.1364/ol.37.000440] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Using oscillating optical tweezers, we show that controlled alignment of rod-shaped bacterial cells allows imaging fluorescently labeled three-dimensional (3D) subcellular structures from different, optimized viewpoints. To illustrate our method, we analyze the Z ring of E. coli. We obtain that the radial width of the Z ring in unconstricted cells is about 120 nm. This result suggests that the Z ring consists of an extremely sparse network of FtsZ filaments.
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Affiliation(s)
- G Carmon
- Department of Physics, Ben-Gurion University of the Negev, Beer Sheva, Israel
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