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Wijesinghe P. Light-deformable microrobots shape up for the biological obstacle course. LIGHT, SCIENCE & APPLICATIONS 2024; 13:103. [PMID: 38710694 DOI: 10.1038/s41377-024-01448-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Euglena gracilis microalga has been transformed into a soft bio-microrobot with light-controlled motion and deformation that can address diverse bio-challenges, such as drug delivery, diseased cell removal, and photodynamic therapy.
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Affiliation(s)
- Philip Wijesinghe
- Centre of Biophotonics, SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9SS, UK.
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2
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Kvåle Løvmo M, Deng S, Moser S, Leitgeb R, Drexler W, Ritsch-Marte M. Ultrasound-induced reorientation for multi-angle optical coherence tomography. Nat Commun 2024; 15:2391. [PMID: 38493195 PMCID: PMC10944478 DOI: 10.1038/s41467-024-46506-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 02/29/2024] [Indexed: 03/18/2024] Open
Abstract
Organoid and spheroid technology provide valuable insights into developmental biology and oncology. Optical coherence tomography (OCT) is a label-free technique that has emerged as an excellent tool for monitoring the structure and function of these samples. However, mature organoids are often too opaque for OCT. Access to multi-angle views is highly desirable to overcome this limitation, preferably with non-contact sample handling. To fulfil these requirements, we present an ultrasound-induced reorientation method for multi-angle-OCT, which employs a 3D-printed acoustic trap inserted into an OCT imaging system, to levitate and reorient zebrafish larvae and tumor spheroids in a controlled and reproducible manner. A model-based algorithm was developed for the physically consistent fusion of multi-angle data from a priori unknown angles. We demonstrate enhanced penetration depth in the joint 3D-recovery of reflectivity, attenuation, refractive index, and position registration for zebrafish larvae, creating an enabling tool for future applications in volumetric imaging.
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Affiliation(s)
- Mia Kvåle Løvmo
- Institute of Biomedical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Shiyu Deng
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria
| | - Simon Moser
- Institute of Biomedical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Rainer Leitgeb
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria
| | - Wolfgang Drexler
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria
| | - Monika Ritsch-Marte
- Institute of Biomedical Physics, Medical University of Innsbruck, Innsbruck, Austria.
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3
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Honda K, Fujiwara K, Hasegawa K, Kaneko A, Abe Y. Coalescence and mixing dynamics of droplets in acoustic levitation by selective colour imaging and measurement. Sci Rep 2023; 13:19590. [PMID: 37949912 PMCID: PMC10638323 DOI: 10.1038/s41598-023-46008-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 10/26/2023] [Indexed: 11/12/2023] Open
Abstract
Acoustic levitation is well-suited to 'lab-on-a-drop' contactless chemical analysis of droplets. Rapid mixing is of fundamental importance in lab-on-a-drop platforms and many other applications involving droplet manipulation. Small droplets, however, have low Reynolds numbers; thus, mixing via turbulence is not possible. Inducing surface oscillation is effective in this regard, however, the relationship between internal flow and mixing dynamics of droplets remains unclear. In this study, we conducted a set of simultaneous optical measurements to assess both the flow field and the distribution of fluid components within acoustically levitated droplets. To achieve this, we developed a technique to selectively separate fluorescent particles within each fluid, permitting the measurement of the concentration field based on the data from the discrete particle distribution. This approach revealed a relationship between the mixing process and the internal flow caused by surface oscillation. Thus, the internal flow induced by surface oscillation could enhance droplet mixing. Our findings will be conducive to the application and further development of lab-on-a-drop devices.
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Affiliation(s)
- Kota Honda
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Kota Fujiwara
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba, 305-8573, Japan
| | - Koji Hasegawa
- Department of Mechanical Engineering, Kogakuin University, Tokyo, 163-8677, Japan
| | - Akiko Kaneko
- Institute of Systems and Information Engineering, University of Tsukuba, Tsukuba, 305-8573, Japan.
| | - Yutaka Abe
- Professor Emeritus, University of Tsukuba, Tsukuba, 305-8573, Japan
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4
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Kumar A, Thakur S, Biswas SK. Formation of multiple complex light structures simultaneously in 3D volume using a single binary phase mask. Sci Rep 2023; 13:16951. [PMID: 37805630 PMCID: PMC10560216 DOI: 10.1038/s41598-023-42087-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 09/05/2023] [Indexed: 10/09/2023] Open
Abstract
Complex structure formation inside or through turbid media is a challenging task due to refractive index inhomogeneity, random light scattering, and speckle noise formation. In this article, we have coupled the data regression model in the R-squared metric and used its advantages as a fitness function in the genetic algorithm to advance the resolution and structural uniformity. As a compatible system with the binary genetic algorithm, we have presented a cost-effective iterative wavefront shaping system-design with binary phase modulation using an affordable ferroelectric liquid crystal (FLC) based binary-phase spatial light modulator (SLM). R-squared metric in the genetic algorithm is analyzed to optimize the binary phase mask, and the prototype system based on iterative binary phase modulation has been validated with a 120-grit ground glass diffuser and fresh chicken tissues of thickness 307 [Formula: see text] and 812 [Formula: see text]. The detailed results show that the proposed cost-effective wavefront shaping system with data regression model assisted R-squared fitness function can construct high-resolution multiple complex hetero-structures simultaneously in 3D volume using an optimized single phase-mask.
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Affiliation(s)
- Amit Kumar
- Bio-NanoPhotonics Laboratory, Department of Physical Sciences, Indian Institute of Science Education and Research-Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, PO, 140306, India
| | - Sarvesh Thakur
- Bio-NanoPhotonics Laboratory, Department of Physical Sciences, Indian Institute of Science Education and Research-Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, PO, 140306, India
| | - S K Biswas
- Bio-NanoPhotonics Laboratory, Department of Physical Sciences, Indian Institute of Science Education and Research-Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, PO, 140306, India.
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5
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Stein M, Keller S, Luo Y, Ilic O. Shaping contactless radiation forces through anomalous acoustic scattering. Nat Commun 2022; 13:6533. [PMID: 36319654 PMCID: PMC9626492 DOI: 10.1038/s41467-022-34207-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
Waves impart momentum and exert force on obstacles in their path. The transfer of wave momentum is a fundamental mechanism for contactless manipulation, yet the rules of conventional scattering intrinsically limit the radiation force based on the shape and the size of the manipulated object. Here, we show that this intrinsic limit can be broken for acoustic waves with subwavelength-structured surfaces (metasurfaces), where the force becomes controllable by the arrangement of surface features, independent of the object's overall shape and size. Harnessing such anomalous metasurface scattering, we demonstrate complex actuation phenomena: self-guidance, where a metasurface object is autonomously guided by an acoustic wave, and tractor beaming, where a metasurface object is pulled by the wave. Our results show that bringing the metasurface physics of acoustic waves, and its full arsenal of tools, to the domain of mechanical manipulation opens new frontiers in contactless actuation and enables diverse actuation mechanisms that are beyond the limits of traditional wave-matter interactions.
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Affiliation(s)
- Matthew Stein
- grid.17635.360000000419368657Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455 USA
| | - Sam Keller
- grid.17635.360000000419368657Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455 USA
| | - Yujie Luo
- grid.17635.360000000419368657Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455 USA
| | - Ognjen Ilic
- grid.17635.360000000419368657Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455 USA
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6
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Durrer J, Agrawal P, Ozgul A, Neuhauss SCF, Nama N, Ahmed D. A robot-assisted acoustofluidic end effector. Nat Commun 2022; 13:6370. [PMID: 36289227 PMCID: PMC9605990 DOI: 10.1038/s41467-022-34167-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 10/17/2022] [Indexed: 12/25/2022] Open
Abstract
Liquid manipulation is the foundation of most laboratory processes. For macroscale liquid handling, both do-it-yourself and commercial robotic systems are available; however, for microscale, reagents are expensive and sample preparation is difficult. Over the last decade, lab-on-a-chip (LOC) systems have come to serve for microscale liquid manipulation; however, lacking automation and multi-functionality. Despite their potential synergies, each has grown separately and no suitable interface yet exists to link macro-level robotics with micro-level LOC or microfluidic devices. Here, we present a robot-assisted acoustofluidic end effector (RAEE) system, comprising a robotic arm and an acoustofluidic end effector, that combines robotics and microfluidic functionalities. We further carried out fluid pumping, particle and zebrafish embryo trapping, and mobile mixing of complex viscous liquids. Finally, we pre-programmed the RAEE to perform automated mixing of viscous liquids in well plates, illustrating its versatility for the automatic execution of chemical processes.
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Affiliation(s)
- Jan Durrer
- Acoustic Robotics Systems Lab, Institute or Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Prajwal Agrawal
- Acoustic Robotics Systems Lab, Institute or Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Ali Ozgul
- Acoustic Robotics Systems Lab, Institute or Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Stephan C F Neuhauss
- Department of Molecular Life Sciences, University of Zurich, Zurich, Switzerland
| | - Nitesh Nama
- Department of Mechanical & Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Daniel Ahmed
- Acoustic Robotics Systems Lab, Institute or Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland.
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7
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Somorjai IML, Ehebauer MT, Escrivà H, Garcia-Fernàndez J. JNK Mediates Differentiation, Cell Polarity and Apoptosis During Amphioxus Development by Regulating Actin Cytoskeleton Dynamics and ERK Signalling. Front Cell Dev Biol 2021; 9:749806. [PMID: 34778260 PMCID: PMC8586503 DOI: 10.3389/fcell.2021.749806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/17/2021] [Indexed: 11/13/2022] Open
Abstract
c-Jun N-terminal kinase (JNK) is a multi-functional protein involved in a diverse array of context-dependent processes, including apoptosis, cell cycle regulation, adhesion, and differentiation. It is integral to several signalling cascades, notably downstream of non-canonical Wnt and mitogen activated protein kinase (MAPK) signalling pathways. As such, it is a key regulator of cellular behaviour and patterning during embryonic development across the animal kingdom. The cephalochordate amphioxus is an invertebrate chordate model system straddling the invertebrate to vertebrate transition and is thus ideally suited for comparative studies of morphogenesis. However, next to nothing is known about JNK signalling or cellular processes in this lineage. Pharmacological inhibition of JNK signalling using SP600125 during embryonic development arrests gastrula invagination and causes convergence extension-like defects in axial elongation, particularly of the notochord. Pharynx formation and anterior oral mesoderm derivatives like the preoral pit are also affected. This is accompanied by tissue-specific transcriptional changes, including reduced expression of six3/6 and wnt2 in the notochord, and ectopic wnt11 in neurulating embryos treated at late gastrula stages. Cellular delamination results in accumulation of cells in the gut cavity and a dorsal fin-like protrusion, followed by secondary Caspase-3-mediated apoptosis of polarity-deficient cells, a phenotype only partly rescued by co-culture with the pan-Caspase inhibitor Z-VAD-fmk. Ectopic activation of extracellular signal regulated kinase (ERK) signalling in the neighbours of extruded notochord and neural cells, possibly due to altered adhesive and tensile properties, as well as defects in cellular migration, may explain some phenotypes caused by JNK inhibition. Overall, this study supports conserved functions of JNK signalling in mediating the complex balance between cell survival, apoptosis, differentiation, and cell fate specification during cephalochordate morphogenesis.
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Affiliation(s)
- Ildiko M L Somorjai
- School of Biology, University of St Andrews, St Andrews, United Kingdom.,Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, Observatoire Océanologique, Banyuls-sur-Mer, France.,Departament de Genètica, Microbiologia i Estadística, University of Barcelona, Barcelona, Spain
| | | | - Hector Escrivà
- Sorbonne Université, CNRS, Biologie Intégrative des Organismes Marins, Observatoire Océanologique, Banyuls-sur-Mer, France
| | - Jordi Garcia-Fernàndez
- Departament de Genètica, Microbiologia i Estadística, University of Barcelona, Barcelona, Spain.,Institut de Biomedicina, University of Barcelona, Barcelona, Spain
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8
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Sun Y, Lee S, Kang SH. Cubic spline-based depth-dependent localization of mitochondria-endoplasmic reticulum contacts by three-dimensional light-sheet super-resolution microscopy. Analyst 2021; 146:4781-4788. [PMID: 34231561 DOI: 10.1039/d1an00852h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The contact distance between mitochondria (Mito) and endoplasmic reticulum (ER) has received considerable attention owing to their crucial function in maintaining lipid and calcium homeostasis. Herein, cubic spline algorithm-based depth-dependent fluorescence-free three-dimensional light-sheet super-resolution microscopy (3D LSRM) with dual-wavelength illumination sources was investigated to study the distance of Mito-ER contacts in various live cells. To detect wavelength-dependent scattering, 12 nm gold nanoparticles (AuNPs) and 20 nm silver nanoparticles (AgNPs) as fluorescence-free nanoprobes were conjugated with Mito and ER. The cubic spline algorithm-based method showed improved localization precision in lateral and axial directions compared with that for previously used least squares and least cubic algorithms. The cubic spline-based depth-dependent localization was applied to the spatial localization of nanoprobes in super-resolution images, in which the average distance of Mito and ER was 22.4 nm in HeLa cells, 22.2 nm in RAW264.7 macrophage cells, 21.9 nm in AGS cells, 21.4 nm in HT29 cells, and 21.3 nm in HEK293 cells. The distances were ∼12% larger than those previously determined by electron microscopy, which demonstrated that this method was accessible and reliable for studying the intracellular structures of various live cells at the subdiffraction limit resolution.
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Affiliation(s)
- Yucheng Sun
- Department of Chemistry, Graduate School, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
| | - Seungah Lee
- Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea.
| | - Seong Ho Kang
- Department of Chemistry, Graduate School, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea and Department of Applied Chemistry and Institute of Natural Sciences, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea.
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9
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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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10
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Fluorescence based rapid optical volume screening system (OVSS) for interrogating multicellular organisms. Sci Rep 2021; 11:7616. [PMID: 33828140 PMCID: PMC8027194 DOI: 10.1038/s41598-021-86951-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 03/22/2021] [Indexed: 11/08/2022] Open
Abstract
Continuous monitoring of large specimens for long durations requires fast volume imaging. This is essential for understanding the processes occurring during the developmental stages of multicellular organisms. One of the key obstacles of fluorescence based prolonged monitoring and data collection is photobleaching. To capture the biological processes and simultaneously overcome the effect of bleaching, we developed single- and multi-color lightsheet based OVSS imaging technique that enables rapid screening of multiple tissues in an organism. Our approach based on OVSS imaging employs quantized step rotation of the specimen to record 2D angular data that reduces data acquisition time when compared to the existing light sheet imaging system (SPIM). A co-planar multicolor light sheet PSF is introduced to illuminate the tissues labelled with spectrally-separated fluorescent probes. The detection is carried out using a dual-channel sub-system that can simultaneously record spectrally separate volume stacks of the target organ. Arduino-based control systems were employed to automatize and control the volume data acquisition process. To illustrate the advantages of our approach, we have noninvasively imaged the Drosophila larvae and Zebrafish embryo. Dynamic studies of multiple organs (muscle and yolk-sac) in Zebrafish for a prolonged duration (5 days) were carried out to understand muscle structuring (Dystrophin, microfibers), primitive Macrophages (in yolk-sac) and inter-dependent lipid and protein-based metabolism. The volume-based study, intensity line-plots and inter-dependence ratio analysis allowed us to understand the transition from lipid-based metabolism to protein-based metabolism during early development (Pharyngula period with a critical transition time, [Formula: see text] h post-fertilization) in Zebrafish. The advantage of multicolor lightsheet illumination, fast volume scanning, simultaneous visualization of multiple organs and an order-less photobleaching makes OVSS imaging the system of choice for rapid monitoring and real-time assessment of macroscopic biological organisms with microscopic resolution.
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11
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Chen C, Gu Y, Philippe J, Zhang P, Bachman H, Zhang J, Mai J, Rufo J, Rawls JF, Davis EE, Katsanis N, Huang TJ. Acoustofluidic rotational tweezing enables high-speed contactless morphological phenotyping of zebrafish larvae. Nat Commun 2021; 12:1118. [PMID: 33602914 PMCID: PMC7892888 DOI: 10.1038/s41467-021-21373-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 01/08/2021] [Indexed: 01/31/2023] Open
Abstract
Modern biomedical research and preclinical pharmaceutical development rely heavily on the phenotyping of small vertebrate models for various diseases prior to human testing. In this article, we demonstrate an acoustofluidic rotational tweezing platform that enables contactless, high-speed, 3D multispectral imaging and digital reconstruction of zebrafish larvae for quantitative phenotypic analysis. The acoustic-induced polarized vortex streaming achieves contactless and rapid (~1 s/rotation) rotation of zebrafish larvae. This enables multispectral imaging of the zebrafish body and internal organs from different viewing perspectives. Moreover, we develop a 3D reconstruction pipeline that yields accurate 3D models based on the multi-view images for quantitative evaluation of basic morphological characteristics and advanced combinations of metrics. With its contactless nature and advantages in speed and automation, our acoustofluidic rotational tweezing system has the potential to be a valuable asset in numerous fields, especially for developmental biology, small molecule screening in biochemistry, and pre-clinical drug development in pharmacology.
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Affiliation(s)
- Chuyi Chen
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, USA
| | - Yuyang Gu
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, USA
| | - Julien Philippe
- Center for Human Disease Modeling, Duke University Medical Center, Durham, NC, USA
| | - Peiran Zhang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, USA
| | - Hunter Bachman
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, USA
| | - Jinxin Zhang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, USA
| | - John Mai
- Alfred E. Mann Institute for Biomedical Engineering, University of Southern California, Los Angeles, CA, USA
| | - Joseph Rufo
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, USA
| | - John F Rawls
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, USA
| | - Erica E Davis
- Center for Human Disease Modeling, Duke University Medical Center, Durham, NC, USA
- Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Nicholas Katsanis
- Center for Human Disease Modeling, Duke University Medical Center, Durham, NC, USA
- Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Tony Jun Huang
- Department of Mechanical Engineering and Material Science, Duke University, Durham, NC, USA.
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12
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Contreras V, Marzo A. Adjusting single-axis acoustic levitators in real time using rainbow schlieren deflectometry. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:015107. [PMID: 33514194 DOI: 10.1063/5.0013347] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Acoustic levitation uses focused high-intensity airborne ultrasound to hold particles in mid-air. It is becoming an important tool for experiments in spectrometry, lab-on-a-droplet, and display technologies. Nowadays, arrays of multiple small transducers can be used to build acoustic levitators; however, their performance depends on the optimal alignment. This work describes a simple method capable of visualizing a 2D projection of the acoustic field in real time using rainbow schlieren deflectometry. Good agreement was found between the images obtained with this technique and simulations of the acoustic pressure. It was also found that the maximum amplitudes of the field were obtained with the levitator aligned so that the power consumption was minimum, showing another simple and affordable way to adjust the levitators. As a result of the alignment optimization, it was possible for the first time to levitate steel and mercury in a levitator constructed with off-the-shelf components. The schlieren technique was applied to the TinyLev acoustic levitation system, but it can be applied to visualize the acoustic potential produced by different types of levitation systems.
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Affiliation(s)
- Victor Contreras
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca 62210, Mexico
| | - Asier Marzo
- Computer Science, Public University of Navarre, Pamplona 31006, Navarre, Spain
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13
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Zhang P, Bachman H, Ozcelik A, Huang TJ. Acoustic Microfluidics. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2020; 13:17-43. [PMID: 32531185 PMCID: PMC7415005 DOI: 10.1146/annurev-anchem-090919-102205] [Citation(s) in RCA: 135] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Acoustic microfluidic devices are powerful tools that use sound waves to manipulate micro- or nanoscale objects or fluids in analytical chemistry and biomedicine. Their simple device designs, biocompatible and contactless operation, and label-free nature are all characteristics that make acoustic microfluidic devices ideal platforms for fundamental research, diagnostics, and therapeutics. Herein, we summarize the physical principles underlying acoustic microfluidics and review their applications, with particular emphasis on the manipulation of macromolecules, cells, particles, model organisms, and fluidic flows. We also present future goals of this technology in analytical chemistry and biomedical research, as well as challenges and opportunities.
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Affiliation(s)
- Peiran Zhang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA;
| | - Hunter Bachman
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA;
| | - Adem Ozcelik
- Department of Mechanical Engineering, Aydın Adnan Menderes University, Aydın 09010, Turkey;
| | - Tony Jun Huang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA;
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14
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Song R, Richard G, Cheng CYY, Teng L, Qiu Y, Lavery MPJ, Trolier-Mckinstry S, Cochran S, Underwood I. Multi-Channel Signal-Generator ASIC for Acoustic Holograms. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2020; 67:49-56. [PMID: 31484116 DOI: 10.1109/tuffc.2019.2938917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A complementary metal-oxide-semiconductor (CMOS) application-specific integrated circuit (ASIC) has been developed to generate arbitrary, dynamic phase patterns for acoustic hologram applications. An experimental prototype has been fabricated to demonstrate phase shaping. It comprises a cascadable 1 ×9 array of identical, independently controlled signal generators implemented in a 0.35- [Formula: see text] minimum-feature-size process. It can individually control the phase of a square wave on each of the nine output pads. The footprint of the integrated circuit is [Formula: see text]. A 128-MHz clock frequency is used to produce outputs at 8 MHz with a phase resolution of 16 levels (4 bits) per channel. A 6 ×6 air-coupled matrix array ultrasonic transducer was built and driven by four ASICs, with the help of commercial buffer amplifiers, for the application demonstration. Acoustic pressure mapping and particle manipulation were performed. In addition, a 2 ×2 array piezoelectric micromachined ultrasonic transducer (PMUT) was connected and driven by four output channels of a single ASIC, demonstrating the flexibility of the ASIC to work with different transducers and the potential for direct integration of CMOS and PMUTs.
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Zhang P, Chen C, Guo F, Philippe J, Gu Y, Tian Z, Bachman H, Ren L, Yang S, Zhong Z, Huang PH, Katsanis N, Chakrabarty K, Huang TJ. Contactless, programmable acoustofluidic manipulation of objects on water. LAB ON A CHIP 2019; 19:3397-3404. [PMID: 31508644 PMCID: PMC6934417 DOI: 10.1039/c9lc00465c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Contact-free manipulation of small objects (e.g., cells, tissues, and droplets) using acoustic waves eliminates physical contact with structures and undesired surface adsorption. Pioneering acoustic-based, contact-free manipulation techniques (e.g., acoustic levitation) enable programmable manipulation but are limited by evaporation, bulky transducers, and inefficient acoustic coupling in air. Herein, we report an acoustofluidic mechanism for the contactless manipulation of small objects on water. A hollow-square-shaped interdigital transducer (IDT) is fabricated on lithium niobate (LiNbO3), immersed in water and used as a sound source to generate acoustic waves and as a micropump to pump fluid in the ±x and ±y orthogonal directions. As a result, objects which float adjacent to the excited IDT can be pushed unidirectionally (horizontally) in ±x and ±y following the directed acoustic wave propagation. A fluidic processor was developed by patterning IDT units in a 6-by-6 array. We demonstrate contactless, programmable manipulation on water of oil droplets and zebrafish larvae. This acoustofluidic-based manipulation opens avenues for the contactless, programmable processing of materials and small biosamples.
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Affiliation(s)
- Peiran Zhang
- Department of Mechanical Engineering and Material Science, Duke University, NC 27708, USA.
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