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Lee S, Jung HI, Lee J, Kim Y, Chung J, Kim HS, Lim J, Nam KC, Lim YS, Choi HS, Kwak BS. Parathyroid-on-a-chip simulating parathyroid hormone secretion in response to calcium concentration. LAB ON A CHIP 2024; 24:3243-3251. [PMID: 38836406 DOI: 10.1039/d4lc00249k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
The parathyroid gland is an endocrine organ that plays a crucial role in regulating calcium levels in blood serum through the secretion of parathyroid hormone (PTH). Hypoparathyroidism is a chronic disease that can occur due to parathyroid defects, but due to the difficulty of creating animal models of this disease or obtaining human normal parathyroid cells, the evaluation of parathyroid functionality for drug development is limited. Although parathyroid-like cells that secrete PTH have recently been reported, their functionality may be overestimated using traditional culture methods that lack in vivo similarities, particularly vascularization. To overcome these limitations, we obtained parathyroid organoids from tonsil-derived mesenchymal stem cells (TMSCs) and fabricated a parathyroid-on-a-chip, capable of simulating PTH secretion based on calcium concentration. This chip exhibited differences in PTH secretion according to calcium concentration and secreted PTH within the range of normal serum levels. In addition, branches of organoids, which are difficult to observe in animal models, were observed in this chip. This could serve as a guideline for successful engraftment in implantation therapies in the future.
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Affiliation(s)
- Sunghan Lee
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seadaemun-gu, Seoul, 13722, Republic of Korea
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do, 10326, Republic of Korea.
| | - Hyo-Il Jung
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seadaemun-gu, Seoul, 13722, Republic of Korea
- The DABOM Inc., 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jaehun Lee
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seadaemun-gu, Seoul, 13722, Republic of Korea
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do, 10326, Republic of Korea.
| | - Youngwon Kim
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seadaemun-gu, Seoul, 13722, Republic of Korea
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do, 10326, Republic of Korea.
| | - Jaewoo Chung
- Department of Laboratory Medicine, Dongguk University Ilsan Hospital, 27 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Republic of Korea
| | - Han Su Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, Ewha Womans University, School of Medicine, Seoul 158-710, Republic of Korea
| | - Jiseok Lim
- School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do, 38541, Republic of Korea
- MediSphere Inc., 280, Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do, 38541, Republic of Korea
| | - Ki Chang Nam
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do, 10326, Republic of Korea.
| | - Yun-Sung Lim
- Department of Otorhinolaryngology -Head and Neck Surgery, Dongguk University Ilsan Hospital, 27 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Republic of Korea.
| | - Han Seok Choi
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Dongguk University Ilsan Hospital, 27 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Republic of Korea.
| | - Bong Seop Kwak
- College of Medicine, Dongguk University, 32 Dongguk-ro, Ilsandong-gu, Goyangsi, Gyeonggi-do, 10326, Republic of Korea.
- MediSphere Inc., 280, Daehak-ro, Gyeongsan-si, Gyeongsangbuk-do, 38541, Republic of Korea
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Bae J, Seo S, Wu R, Kim T. Programmable and Pixelated Solute Concentration Fields Controlled by Three-Dimensionally Networked Microfluidic Source/Sink Arrays. ACS NANO 2023; 17:20273-20283. [PMID: 37830478 DOI: 10.1021/acsnano.3c06247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Membrane-integrated microfluidic platforms have played a pivotal role in understanding natural phenomena coupled with solute concentration gradients at the micro- and nanoscale, enabling on-chip microscopy in well-defined planar concentration fields. However, the standardized two-dimensional fabrication schemes in microfluidics have impeded the realization of more complex and diverse chemical environmental conditions due to the limited possible arrangements of source/sink conditions in a fluidic domain. In this study, we present a microfluidic platform with a three-dimensional microchannel network design, where discretized membranes can be integrated and individually controlled in a two-dimensional array format at any location within the entire quasi-two-dimensional solute concentration field. We elucidate the principles of the device to implement operations of the pixel-like sources/sinks and dynamically programmable control of various long-lasting solute concentration fields. Furthermore, we demonstrate the application of the generated solute concentration fields in manipulating the transport of micrometer or submicrometer particles with a high degree of freedom, surpassing conventionally available solute concentration fields. This work provides an experimental tool for investigating complex systems under high-order chemical environmental conditions, thereby facilitating the extensive development of higher-performance micro- and nanotechnologies.
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Affiliation(s)
- Juyeol Bae
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Sangjin Seo
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Ronghui Wu
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Taesung Kim
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
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3
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Yu SX, Liu Y, Wu Y, Luo H, Huang R, Wang YJ, Wang X, Gao H, Shi H, Jing G, Liu YJ. Cervix chip mimicking cervical microenvironment for quantifying sperm locomotion. Biosens Bioelectron 2022; 204:114040. [PMID: 35151944 DOI: 10.1016/j.bios.2022.114040] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 12/14/2022]
Abstract
As the gate for sperm swimming into the female reproductive tract, cervix is full of cervical mucus, which plays an important role in sperm locomotion. The fact that sperm cannot pass through the cervical mucus-cervix microenvironment will cause the male infertility. However, how the sperm swim across the cervix microenvironment remains elusive. We used hyaluronic acid (HA), a substitute of cervical mucus to mimic cervix microenvironment and designed a cervix chip to study sperm selection and behavior. An accumulation of sperm in HA confirmed that HA served as a reservoir for sperm, similar to cervical mucus. We found that sperm escaping from HA exhibited higher motility than the sperm accessing into HA, suggesting that HA functions as a filter to select sperm with high activity. Our findings construct a practical platform to explore the sophisticated interaction of sperm with cervix microenvironment, with elaborate swimming indicators thus provide a promising cervix chip for sperm selection with kinematic features on-demand. What's more, the cervix chip allows the convenient use in clinical infertility diagnosis, owing to the advantage of simple, fast and high efficiency.
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Affiliation(s)
- Sai-Xi Yu
- Shanghai Institute of Cardiovascular Diseases, Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Department of Systems Biology for Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Yanan Liu
- School of Physics, State Key Laboratory of Photon Technology in Western China Energy, Northwest University, Xi'an, 710069, China
| | - Yi Wu
- Shanghai Institute of Cardiovascular Diseases, Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Department of Systems Biology for Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Hao Luo
- School of Physics, State Key Laboratory of Photon Technology in Western China Energy, Northwest University, Xi'an, 710069, China
| | - Rufei Huang
- NHC Key Lab. of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Hospital of SIPPR, Fudan University, Shanghai, 200032, China
| | - Ya-Jun Wang
- Shanghai Institute of Cardiovascular Diseases, Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Department of Systems Biology for Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Xuemei Wang
- NHC Key Lab. of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, 200032, China
| | - Hai Gao
- Shanghai Institute of Cardiovascular Diseases, Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Department of Systems Biology for Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Huijuan Shi
- NHC Key Lab. of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies), Fudan University, Shanghai, 200032, China.
| | - Guangyin Jing
- School of Physics, State Key Laboratory of Photon Technology in Western China Energy, Northwest University, Xi'an, 710069, China.
| | - Yan-Jun Liu
- Shanghai Institute of Cardiovascular Diseases, Shanghai Key Laboratory of Medical Epigenetics, International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Department of Systems Biology for Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
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Su C, Chuah YJ, Ong HB, Tay HM, Dalan R, Hou HW. A Facile and Scalable Hydrogel Patterning Method for Microfluidic 3D Cell Culture and Spheroid-in-Gel Culture Array. BIOSENSORS 2021; 11:bios11120509. [PMID: 34940266 PMCID: PMC8699815 DOI: 10.3390/bios11120509] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 05/14/2023]
Abstract
Incorporation of extracellular matrix (ECM) and hydrogel in microfluidic 3D cell culture platforms is important to create a physiological microenvironment for cell morphogenesis and to establish 3D co-culture models by hydrogel compartmentalization. Here, we describe a simple and scalable ECM patterning method for microfluidic cell cultures by achieving hydrogel confinement due to the geometrical expansion of channel heights (stepped height features) and capillary burst valve (CBV) effects. We first demonstrate a sequential "pillar-free" hydrogel patterning to form adjacent hydrogel lanes in enclosed microfluidic devices, which can be further multiplexed with one to two stepped height features. Next, we developed a novel "spheroid-in-gel" culture device that integrates (1) an on-chip hanging drop spheroid culture and (2) a single "press-on" hydrogel confinement step for rapid ECM patterning in an open-channel microarray format. The initial formation of breast cancer (MCF-7) spheroids was achieved by hanging a drop culture on a patterned polydimethylsiloxane (PDMS) substrate. Single spheroids were then directly encapsulated on-chip in individual hydrogel islands at the same positions, thus, eliminating any manual spheroid handling and transferring steps. As a proof-of-concept to perform a spheroid co-culture, endothelial cell layer (HUVEC) was formed surrounding the spheroid-containing ECM region for drug testing studies. Overall, this developed stepped height-based hydrogel patterning method is simple to use in either enclosed microchannels or open surfaces and can be readily adapted for in-gel cultures of larger 3D cellular spheroids or microtissues.
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Affiliation(s)
- Chengxun Su
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore; (C.S.); (Y.J.C.); (H.B.O.); (H.M.T.)
- Interdisciplinary Graduate School, Nanyang Technological University, Singapore 639798, Singapore
| | - Yon Jin Chuah
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore; (C.S.); (Y.J.C.); (H.B.O.); (H.M.T.)
| | - Hong Boon Ong
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore; (C.S.); (Y.J.C.); (H.B.O.); (H.M.T.)
| | - Hui Min Tay
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore; (C.S.); (Y.J.C.); (H.B.O.); (H.M.T.)
| | - Rinkoo Dalan
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore;
- Endocrinology Department, Tan Tock Seng Hospital, Singapore 308433, Singapore
| | - Han Wei Hou
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore; (C.S.); (Y.J.C.); (H.B.O.); (H.M.T.)
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore;
- Correspondence:
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5
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Park D, Lee J, Lee Y, Son K, Choi JW, Jeang WJ, Choi H, Hwang Y, Kim HY, Jeon NL. Aspiration-mediated hydrogel micropatterning using rail-based open microfluidic devices for high-throughput 3D cell culture. Sci Rep 2021; 11:19986. [PMID: 34620916 PMCID: PMC8497476 DOI: 10.1038/s41598-021-99387-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 08/06/2021] [Indexed: 11/09/2022] Open
Abstract
Microfluidics offers promising methods for aligning cells in physiologically relevant configurations to recapitulate human organ functionality. Specifically, microstructures within microfluidic devices facilitate 3D cell culture by guiding hydrogel precursors containing cells. Conventional approaches utilize capillary forces of hydrogel precursors to guide fluid flow into desired areas of high wettability. These methods, however, require complicated fabrication processes and subtle loading protocols, thus limiting device throughput and experimental yield. Here, we present a swift and robust hydrogel patterning technique for 3D cell culture, where preloaded hydrogel solution in a microfluidic device is aspirated while only leaving a portion of the solution in desired channels. The device is designed such that differing critical capillary pressure conditions are established over the interfaces of the loaded hydrogel solution, which leads to controlled removal of the solution during aspiration. A proposed theoretical model of capillary pressure conditions provides physical insights to inform generalized design rules for device structures. We demonstrate formation of multiple, discontinuous hollow channels with a single aspiration. Then we test vasculogenic capacity of various cell types using a microfluidic device obtained by our technique to illustrate its capabilities as a viable micro-manufacturing scheme for high-throughput cellular co-culture.
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Affiliation(s)
- Dohyun Park
- Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Republic of Korea.,Bio-MAX Institute, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jungseub Lee
- Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Younggyun Lee
- Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kyungmin Son
- Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Woo Choi
- Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - William J Jeang
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Hyeri Choi
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yunchan Hwang
- Department of Electrical Engineering and Computer Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ho-Young Kim
- Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
| | - Noo Li Jeon
- Department of Mechanical Engineering, Seoul National University, Seoul, 08826, Republic of Korea. .,Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea. .,Bio-MAX Institute, Seoul National University, Seoul, 08826, Republic of Korea.
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6
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Tian C, Tu Q, Liu W, Wang J. Recent advances in microfluidic technologies for organ-on-a-chip. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.06.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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7
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Cao X, Ashfaq R, Cheng F, Maharjan S, Li J, Ying G, Hassan S, Xiao H, Yue K, Zhang YS. A Tumor-on-a-Chip System with Bioprinted Blood and Lymphatic Vessel Pair. ADVANCED FUNCTIONAL MATERIALS 2019; 29:1807173. [PMID: 33041741 PMCID: PMC7546431 DOI: 10.1002/adfm.201807173] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Indexed: 05/20/2023]
Abstract
Current in vitro anti-tumor drug screening strategies are insufficiently portrayed lacking true perfusion and draining microcirculation systems, which may post significant limitation in reproducing the transport kinetics of cancer therapeutics explicitly. Herein, we report the fabrication of an improved tumor model consisting of bioprinted hollow blood vessel and lymphatic vessel pair, hosted in a three-dimensional (3D) tumor microenvironment-mimetic hydrogel matrix, termed as the tumor-on-a-chip with bioprinted blood and lymphatic vessel pair (TOC-BBL). The bioprinted blood vessel was perfusable channel with opening on both ends while the bioprinted lymphatic vessel was blinded on one end, both of which were embedded in a hydrogel tumor mass, with vessel permeability individually tunable through optimization of the composition of the bioinks. We demonstrated that systems with different combinations of these bioprinted blood/lymphatic vessels exhibited varying levels of diffusion profiles for biomolecules and anti-cancer drugs. Our TOC-BBL platform mimicking the natural pathway of drug-tumor interactions would have the drug introduced through the perfusable blood vessel, cross the vascular wall into the tumor tissue via diffusion, and eventually drained into the lymphatic vessel along with the carrier flow. Our results suggested that this unique in vitro tumor model containing the bioprinted blood/lymphatic vessel pair may have the capacity of simulating the complex transport mechanisms of certain pharmaceutical compounds inside the tumor microenvironment, potentially providing improved accuracy in future cancer drug screening.
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Affiliation(s)
- Xia Cao
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139; Department of Pharmaceutics and Tissue Engineering, School of Pharmacy, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Ramla Ashfaq
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139; National Center of Excellence in Molecular Biology, University of the Punjab, 87 West Canal Bank Rd, Thokar Niaz Baig, Lahore 53700, Pakistan
| | - Feng Cheng
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139
| | - Sushila Maharjan
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139
| | - Jun Li
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139
| | - Guoliang Ying
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139
| | - Shabir Hassan
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139
| | - Haiyan Xiao
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P.R. China
| | - Kan Yue
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou 510640, P.R. China State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P.R. China
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Brigham and Women’s Hospital; Department of Medicine, Harvard Medical School Cambridge, MA, 02139
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Bae J, Lee K, Seo S, Park JG, Zhou Q, Kim T. Controlled open-cell two-dimensional liquid foam generation for micro- and nanoscale patterning of materials. Nat Commun 2019; 10:3209. [PMID: 31324805 PMCID: PMC6642206 DOI: 10.1038/s41467-019-11281-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 07/03/2019] [Indexed: 11/08/2022] Open
Abstract
Liquid foam consists of liquid film networks. The films can be thinned to the nanoscale via evaporation and have potential in bottom-up material structuring applications. However, their use has been limited due to their dynamic fluidity, complex topological changes, and physical characteristics of the closed system. Here, we present a simple and versatile microfluidic approach for controlling two-dimensional liquid foam, designing not only evaporative microholes for directed drainage to generate desired film networks without topological changes for the first time, but also microposts to pin the generated films at set positions. Patterning materials in liquid is achievable using the thin films as nanoscale molds, which has additional potential through repeatable patterning on a substrate and combination with a lithographic technique. By enabling direct-writable multi-integrated patterning of various heterogeneous materials in two-dimensional or three-dimensional networked nanostructures, this technique provides novel means of nanofabrication superior to both lithographic and bottom-up state-of-the-art techniques.
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Affiliation(s)
- Juyeol Bae
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Kyunghun Lee
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Sangjin Seo
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Jun Gyu Park
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Qitao Zhou
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Taesung Kim
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea.
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9
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Bae J, Lee J, Zhou Q, Kim T. Micro-/Nanofluidics for Liquid-Mediated Patterning of Hybrid-Scale Material Structures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1804953. [PMID: 30600554 DOI: 10.1002/adma.201804953] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/17/2018] [Indexed: 06/09/2023]
Abstract
Various materials are fabricated to form specific structures/patterns at the micro-/nanoscale, which exhibit additional functions and performance. Recent liquid-mediated fabrication methods utilizing bottom-up approaches benefit from micro-/nanofluidic technologies that provide a high controllability for manipulating fluids containing various solutes, suspensions, and building blocks at the microscale and/or nanoscale. Here, the state-of-the-art micro-/nanofluidic approaches are discussed, which facilitate the liquid-mediated patterning of various hybrid-scale material structures, thereby showing many additional advantages in cost, labor, resolution, and throughput. Such systems are categorized here according to three representative forms defined by the degree of the free-fluid-fluid interface: free, semiconfined, and fully confined forms. The micro-/nanofluidic methods for each form are discussed, followed by recent examples of their applications. To close, the remaining issues and potential applications are summarized.
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Affiliation(s)
- Juyeol Bae
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Jongwan Lee
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Qitao Zhou
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Taesung Kim
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
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10
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Rose MA, Bowen JJ, Morin SA. Emergent Soft Lithographic Tools for the Fabrication of Functional Polymeric Microstructures. Chemphyschem 2019; 20:909-925. [DOI: 10.1002/cphc.201801140] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/15/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Mark A. Rose
- Department of Chemistry University of Nebraska-Lincoln Lincoln, NE 68588 USA
| | - John J. Bowen
- Department of Chemistry University of Nebraska-Lincoln Lincoln, NE 68588 USA
| | - Stephen A. Morin
- Department of Chemistry University of Nebraska-Lincoln Lincoln, NE 68588 USA
- Nebraska Center for Materials and Nanoscience University of Nebraska-Lincoln Lincoln, NE 68588 USA
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11
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Lee SH, Jun BH. Advances in dynamic microphysiological organ-on-a-chip: Design principle and its biomedical application. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.11.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Noh J, Kim O, Jung Y, Han H, Kim JE, Kim S, Lee S, Park J, Jung RH, Kim SI, Park J, Han J, Lee H, Yoo DK, Lee AC, Kwon E, Ryu T, Chung J, Kwon S. High-throughput retrieval of physical DNA for NGS-identifiable clones in phage display library. MAbs 2019; 11:532-545. [PMID: 30735467 DOI: 10.1080/19420862.2019.1571878] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In antibody discovery, in-depth analysis of an antibody library and high-throughput retrieval of clones in the library are crucial to identifying and exploiting rare clones with different properties. However, existing methods have technical limitations, such as low process throughput from the laborious cloning process and waste of the phenotypic screening capacity from unnecessary repetitive tests on the dominant clones. To overcome the limitations, we developed a new high-throughput platform for the identification and retrieval of clones in the library, TrueRepertoire™. This new platform provides highly accurate sequences of the clones with linkage information between heavy and light chains of the antibody fragment. Additionally, the physical DNA of clones can be retrieved in high throughput based on the sequence information. We validated the high accuracy of the sequences and demonstrated that there is no platform-specific bias. Moreover, the applicability of TrueRepertoire™ was demonstrated by a phage-displayed single-chain variable fragment library targeting human hepatocyte growth factor protein.
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Affiliation(s)
- Jinsung Noh
- a Department of Electrical Engineering and Computer Science , Seoul National University , Seoul , Republic of Korea
| | - Okju Kim
- a Department of Electrical Engineering and Computer Science , Seoul National University , Seoul , Republic of Korea.,b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Yushin Jung
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Haejun Han
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Jung-Eun Kim
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Soohyun Kim
- c Department of Biochemistry and Molecular Biology , Seoul National University College of Medicine , Seoul , Republic of Korea.,d Cancer Research Institute , Seoul National University College of Medicine , Seoul , Republic of Korea
| | - Sanghyub Lee
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Jaeseong Park
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Rae Hyuck Jung
- e Inter-University Semiconductor Research Center , Seoul National University , Seoul , Republic of Korea
| | - Sang Il Kim
- c Department of Biochemistry and Molecular Biology , Seoul National University College of Medicine , Seoul , Republic of Korea.,d Cancer Research Institute , Seoul National University College of Medicine , Seoul , Republic of Korea
| | - Jaejun Park
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Jerome Han
- c Department of Biochemistry and Molecular Biology , Seoul National University College of Medicine , Seoul , Republic of Korea.,f Department of Biomedical Science , Seoul National University College of Medicine , Seoul , Republic of Korea
| | - Hyunho Lee
- a Department of Electrical Engineering and Computer Science , Seoul National University , Seoul , Republic of Korea
| | - Duck Kyun Yoo
- c Department of Biochemistry and Molecular Biology , Seoul National University College of Medicine , Seoul , Republic of Korea.,f Department of Biomedical Science , Seoul National University College of Medicine , Seoul , Republic of Korea.,g Neuro-Immune Information Storage Network Research Center , Seoul National University College of Medicine , Seoul , Republic of Korea
| | - Amos C Lee
- h Interdisciplinary Program in Bioengineering , Seoul National University , Seoul , Republic of Korea
| | - Euijin Kwon
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Taehoon Ryu
- b Bioengineering Research Institute, Celemics, Inc , Seoul , Republic of Korea
| | - Junho Chung
- c Department of Biochemistry and Molecular Biology , Seoul National University College of Medicine , Seoul , Republic of Korea.,d Cancer Research Institute , Seoul National University College of Medicine , Seoul , Republic of Korea.,f Department of Biomedical Science , Seoul National University College of Medicine , Seoul , Republic of Korea
| | - Sunghoon Kwon
- a Department of Electrical Engineering and Computer Science , Seoul National University , Seoul , Republic of Korea.,e Inter-University Semiconductor Research Center , Seoul National University , Seoul , Republic of Korea.,h Interdisciplinary Program in Bioengineering , Seoul National University , Seoul , Republic of Korea.,i Institutes of Entrepreneurial BioConvergence , Seoul National University , Seoul , Republic of Korea.,j Seoul National University Hospital Biomedical Research Institute , Seoul National University Hospital , Seoul , Republic of Korea
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13
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Li Y, Zhang Z, Su M, Huang Z, Li Z, Li F, Pan Q, Ren W, Hu X, Li L, Song Y. A general strategy for printing colloidal nanomaterials into one-dimensional micro/nanolines. NANOSCALE 2018; 10:22374-22380. [PMID: 30474673 DOI: 10.1039/c8nr06543h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Though patterned one-dimensional (1D) micro/nanoline arrays are of great importance in the field of integrated circuits and optoelectronics, the fabrication of high-precision micro/nanolines with excellent optical and electrical performance remains a great challenge. Herein, a general strategy for printing 1D micro/nanolines is proposed by manipulating the self-assembly of functional nanoparticles as a multilayer or monolayer stack with a single-nanoparticle width. This method is universal for dispersible nanoparticles, and the silver nanoparticle was selected as a model nanoparticle due to its good conductivity, dispersibility and narrow-size distribution. The results indicate that the morphologies of printed micro/nanolines can be precisely regulated by the substrate wettability and the suspension concentration. Specifically, 1D nanoparticle-assembled architectures are printed as a monolayer stack on the substrate with a low contact angle (below 45°), while a multilayer stack is formed on the substrate with a high contact angle (above 50°) or a high concentration (more than 0.12%). The controllability of micro/nanoline morphologies can be interpreted through the influence of the three phase contact line slipping motion and the nanoparticle diffusion on diverse substrates at different concentrations. Alteration of the printing template structures enables the intervals of 1D micro/nanolines to span from 16 μm to 48 μm. These results provide an efficient methodology for fabricating micro/nano-circuits or optics and strengthening the understanding of the self-assembling process.
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Affiliation(s)
- Yifan Li
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, P. R. China.
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14
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Lee SH, Rho WY, Park SJ, Kim J, Kwon OS, Jun BH. Multifunctional self-assembled monolayers via microcontact printing and degas-driven flow guided patterning. Sci Rep 2018; 8:16763. [PMID: 30425325 PMCID: PMC6233183 DOI: 10.1038/s41598-018-35195-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 10/27/2018] [Indexed: 11/09/2022] Open
Abstract
Soft lithography-based patterning techniques have been developed to investigate biological and chemical phenomena. Until now, micropatterning with various materials required multiple procedural steps such as repeating layer-by-layer patterning, aligning of stamps, and incubating printed inks. Herein, we describe a facile micropatterning method for producing chemically well-defined surface architectures by combining microcontact (µCP) and microfluidic vacuum-assisted degas-driven flow guided patterning (DFGP) with a poly(dimethylsiloxane) (PDMS) stamp. To demonstrate our concept, we fabricated a bi-composite micropatterned surface with different functional molecular inks such as fluorescein isothiocyanate labelled bovine serum albumin (FITC-BSA) and polyethylene glycol (PEG)-silane for a biomolecule array, and 3-aminopropyltriethoxysilane (APTES) and PEG-silane pattern for a self-assembled colloid gold nanoparticle monolayer. With a certain composition of molecular inks for the patterning, bi-composite surface patterns could be produced by this µCP-DFGP approach without any supplementary process. This patterning approach can be used in microfabrication and highly applicable to biomolecules and nanoparticles that spread as a monolayer.
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Affiliation(s)
- Sang Hun Lee
- School of Chemical & Biological Engineering, Seoul National University, Seoul, 00826, Republic of Korea
| | - Won-Yeop Rho
- School of International Engineering and Science, Chonbuk National University, Jeonju, 54896, Republic of Korea
| | - Seon Joo Park
- Harzards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Jinyeong Kim
- Harzards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Oh Seok Kwon
- Harzards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, 05029, Republic of Korea.
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15
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Lim J, Tahk D, Yu J, Min DH, Jeon NL. Design rules for a tunable merged-tip microneedle. MICROSYSTEMS & NANOENGINEERING 2018; 4:29. [PMID: 31057917 PMCID: PMC6220166 DOI: 10.1038/s41378-018-0028-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/04/2018] [Accepted: 06/24/2018] [Indexed: 05/05/2023]
Abstract
This publication proposes the use of an elasto-capillarity-driven self-assembly for fabricating a microscale merged-tip structure out of a variety of biocompatible UV-curable polymers for use as a microneedle platform. In addition, the novel merged-tip microstructure constitutes a new class of microneedles, which incorporates the convergence of biocompatible polymer micropillars, leading to the formation of a sharp tip and an open cavity capable of both liquid trapping and volume control. When combined with biocompatible photopolymer micropillar arrays fabricated with photolithography, elasto-capillarity-driven self-assembly provides a means for producing a complex microneedle-like structure without the use of micromolding or micromachining. This publication also explores and defines the design rules by which several fabrication aspects, such as micropillar dimensions, shapes, pattern array configurations, and materials, can be manipulated to produce a customizable microneedle array with controllable cavity volumes, fracture points, and merge profiles. In addition, the incorporation of a modular through-hole micropore membrane base was also investigated as a method for constitutive payload delivery and fluid-sampling functionalities. The flexibility and fabrication simplicity of the merged-tip microneedle platform holds promise in transdermal drug delivery applications.
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Affiliation(s)
- Jungeun Lim
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826 South Korea
- Division of WCU Multiscale Mechanical Design, Seoul National University, Seoul, 08826 South Korea
| | - Dongha Tahk
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826 South Korea
- Division of WCU Multiscale Mechanical Design, Seoul National University, Seoul, 08826 South Korea
- Institute of Advanced Machinery and Design, Seoul National University, Seoul, 08826 South Korea
| | - James Yu
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826 South Korea
| | - Dal-Hee Min
- Department of Chemistry, Seoul National University, Seoul, South Korea
| | - Noo Li Jeon
- School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 08826 South Korea
- Division of WCU Multiscale Mechanical Design, Seoul National University, Seoul, 08826 South Korea
- Institute of Advanced Machinery and Design, Seoul National University, Seoul, 08826 South Korea
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826 South Korea
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16
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Lee Y, Choi JW, Yu J, Park D, Ha J, Son K, Lee S, Chung M, Kim HY, Jeon NL. Microfluidics within a well: an injection-molded plastic array 3D culture platform. LAB ON A CHIP 2018; 18:2433-2440. [PMID: 29999064 DOI: 10.1039/c8lc00336j] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Polydimethylsiloxane (PDMS) has been widely used in fabricating microfluidic devices for prototyping and proof-of-concept experiments. Due to several material limitations, PDMS has not been widely adopted for commercial applications that require large-scale production. This paper describes a novel injection-molded plastic array 3D culture (IMPACT) platform that incorporates a microfluidic design to integrate patterned 3D cell cultures within a single 96-well (diameter = 9 mm) plate. Cell containing gels can be sequentially patterned by capillary-guided flow along the corner and narrow gaps designed within the 96-well form factor. Compared to PDMS-based hydrophobic burst valve designs, this work utilizes hydrophilic liquid guides to obtain rapid and reproducible patterned gels for co-cultures. When a liquid droplet (i.e. cell containing fibrin or collagen gel) is placed on a corner, spontaneous patterning is achieved within 1 second. Optimal dimensionless parameters required for successful capillary loading have been determined. To demonstrate the utility of the platform for 3D co-culture, angiogenesis experiments were performed by patterning HUVEC (human umbilical endothelial cells) and LF (lung fibroblasts) embedded in 3D fibrin gels. The angiogenic sprouts (with open lumen tip cells expressing junctional proteins) are comparable to those observed in PDMS based devices. The IMPACT device has the potential to provide a robust high-throughput experimental platform for vascularized microphysiological systems.
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Affiliation(s)
- Younggyun Lee
- Division of WCU (World Class University) Multiscale Mechanical Design, Seoul National University, Seoul 08826, Republic of Korea.
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17
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Huang Z, Yang Q, Su M, Li Z, Hu X, Li Y, Pan Q, Ren W, Li F, Song Y. A General Approach for Fluid Patterning and Application in Fabricating Microdevices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1802172. [PMID: 29920800 DOI: 10.1002/adma.201802172] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/14/2018] [Indexed: 06/08/2023]
Abstract
Engineering the fluid interface such as the gas-liquid interface is of great significance for solvent processing applications including functional material assembly, inkjet printing, and high-performance device fabrication. However, precisely controlling the fluid interface remains a great challenge owing to its flexibility and fluidity. Here, a general method to manipulate the fluid interface for fluid patterning using micropillars in the microchannel is reported. The principle of fluid patterning for immiscible fluid pairs including air, water, and oils is proposed. This understanding enables the preparation of programmable multiphase fluid patterns and assembly of multilayer functional materials to fabricate micro-optoelectronic devices. This general strategy of fluid patterning provides a promising platform to study the fundamental processes occurring on the fluid interface, and benefits applications in many subjects, such as microfluidics, microbiology, chemical analysis and detection, material synthesis and assembly, device fabrication, etc.
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Affiliation(s)
- Zhandong Huang
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qiang Yang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Meng Su
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
| | - Zheng Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiaotian Hu
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yifan Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qi Pan
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wanjie Ren
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Fengyu Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
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18
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Park D, Kang M, Choi JW, Paik SM, Ko J, Lee S, Lee Y, Son K, Ha J, Choi M, Park W, Kim HY, Jeon NL. Microstructure guided multi-scale liquid patterning on an open surface. LAB ON A CHIP 2018; 18:2013-2022. [PMID: 29873341 DOI: 10.1039/c7lc01288h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Liquid patterning is a quintessential aspect in cell-based screening. While there are a variety of methods to handle microliquids utilizing surface treatments, complex microfluidic systems, and automated dispensing, most of the stated methods are both expensive and difficult to implement. Here, we present a fast multi-scale microliquid-patterning method on an open surface using embossed microstructures without surface modification. Arrays of micropillars can trap microliquids when a bulk drop is swept by an elastic sweeper on polystyrene (PS) substrates. The patterning mechanism on a basic form of a 2 × 2 rectangular array of circular pillars is analyzed theoretically and verified with experiments. Nanoliter-to-microliter volumes of liquids are patterned into various shapes by arranging the pillars based on the analysis. Furthermore, an array of geometrically modified pillars can capture approximately 8000 droplets on a large substrate (55 mm × 55 mm) in one step. Given the simplistic method of wipe patterning, the proposed platform can be utilized in both manual benchtop and automated settings. We will provide proof of concept experiments of single colony isolation using nanoliter-scale liquid patterning and of human angiogenic vessel formation using sequential patterning of microliter-scale liquids.
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Affiliation(s)
- Dohyun Park
- Division of WCU (World Class University) Multiscale Mechanical Design, Seoul National University, Seoul, 08826, Republic of Korea
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19
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Li Y, Su M, Li Z, Huang Z, Li F, Pan Q, Ren W, Hu X, Song Y. Patterned Arrays of Functional Lateral Heterostructures via Sequential Template-Directed Printing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800792. [PMID: 29707903 DOI: 10.1002/smll.201800792] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/17/2018] [Indexed: 06/08/2023]
Abstract
The precise integration of microscale dots and lines with controllable interfacing connections is highly important for the fabrication of functional devices. To date, the solution-processible methods are used to fabricate the heterogeneous micropatterns for different materials. However, for increasingly miniaturized and multifunctional devices, it is extremely challenging to engineer the uncertain kinetics of a solution on the microstructures surfaces, resulting in uncontrollable interface connections and poor device performance. Here, a sequential template-directed printing process is demonstrated for the fabrication of arrayed microdots connected by microwires through the regulation of the Rayleigh-Taylor instability of material solution or suspension. Flexibility in the control of fluidic behaviors can realize precise interface connection between the micropatterns, including the microwires traversing, overlapping or connecting the microdots. Moreover, various morphologies such as circular, rhombic, or star-shaped microdots as well as straight, broken or curved microwires can be achieved. The lateral heterostructure printed with two different quantum dots displays bright dichromatic photoluminescence. The ammonia gas sensor printed by polyaniline and silver nanoparticles exhibits a rapid response time. This strategy can construct heterostructures in a facile manner by eliminating the uncertainty of the multimaterials interface connection, which will be promising for the development of novel lateral functional devices.
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Affiliation(s)
- Yifan Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Meng Su
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
| | - Zheng Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhandong Huang
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Fengyu Li
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qi Pan
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wanjie Ren
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiaotian Hu
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing, 100190, P. R. China
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20
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PDMS microchannel surface modification with teflon for algal lipid research. BIOCHIP JOURNAL 2017. [DOI: 10.1007/s13206-017-1302-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Adeyiga O, Kahkeshani S, Paiè P, Di Carlo D. Research highlights: surface-based microfluidic control. LAB ON A CHIP 2015; 15:3107-3110. [PMID: 26095691 DOI: 10.1039/c5lc90071a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Microfluidic systems are often dominated by their surfaces because of the high surface area to volume ratios in microchannel flows or drop-based systems. Here we highlight recent work on engineering and exploiting surface effects to control the formation and motion of microdrops. We highlight work using precisely microstructured wetting surfaces to repel all manner of liquids even when the liquid-air surface tension is low. In a second paper, selective capillary filling and draining is used to pattern liquid and cell-laden gels for 3D culture. A final paper making use of vapor-driven surface tension effects to drive the motion of drop ensembles is also examined, exploring a new mechanism for drop control - including motion and merging. Surface-driven motion and patterning has been a widely successful area in microfluidics (e.g. electrowetting or patterned self-assembled monolayers) and recent work is extending into new directions that, once well-understood, should enable new applications.
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Affiliation(s)
- Oladunni Adeyiga
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA.
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22
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Lee H, Lee SG, Doyle PS. Photopatterned oil-reservoir micromodels with tailored wetting properties. LAB ON A CHIP 2015; 15:3047-3055. [PMID: 26082065 DOI: 10.1039/c5lc00277j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Micromodels with a simplified porous network that represents geological porous media have been used as experimental test beds for multiphase flow studies in the petroleum industry. We present a new method to fabricate reservoir micromodels with heterogeneous wetting properties. Photopatterned, copolymerized microstructures were fabricated in a bottom-up manner. The use of rationally designed copolymers allowed us to tailor the wetting behavior (oleophilic/phobic) of the structures without requiring additional surface modifications. Using this approach, two separate techniques of constructing microstructures and tailoring their wetting behavior are combined in a simple, single-step ultraviolet lithography process. This microstructuring method is fast, economical, and versatile compared with previous fabrication methods used for multi-phase micromodel experiments. The wetting behaviors of the copolymerized microstructures were quantified and demonstrative oil/water immiscible displacement experiments were conducted.
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Affiliation(s)
- Hyundo Lee
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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