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Wang L, Dong H, Zheng K, Zeng N, Wu M, Wang X, Li H. Organofluorosilicon Modified Polyacrylate with the Unidirectional Migration Promotion of Disperse Dyes toward Polyester Fabric for Wash-Free Digital Inkjet Dyeing. ACS APPLIED MATERIALS & INTERFACES 2024; 16:40030-40045. [PMID: 39013080 DOI: 10.1021/acsami.4c08767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
The printing and dyeing industry is currently accelerating toward a direction of high efficiency, energy conservation, environmental protection, and integration with digitalization. Disperse dye wash-free digital inkjet dyeing is a revolutionary breakthrough for cleaning and coloring polyester fabric. Based on the solubility parameters and the hot-melt dyeing characteristics of disperse dyes, soft, hard, and functional monomers of acrylate were used as the main body. Moreover, single-vinyl fluorinated polysiloxane and divinyl polysiloxane with low solubility parameters were used as modified monomers. A modified polyacrylate (PFSMA) adhesive containing silicon in the main chain and fluorine silicon in the side chain was prepared via miniemulsion polymerization. Using disperse digital inkjet dyeing of polyester fabric without washing can realize energy saving, emission reduction, and carbon reduction. Results showed that the optimum preparation conditions of PFSMA were as follows: DVFS molecular weight of 957 g/mol and DVFS content of 2.5 wt %. Compared with that of polyacrylate (PA), the glass-transition temperature of PFSMA film decreased, and its water resistance, toughness, and adhesion enhanced. When the PFSMA content in the wash-free disperse red ink was 8 wt %, the color yields of the front and back of the PFSMA jet-dyed polyester fabric were 18.86 and 13.28, respectively. Moreover, the color yield of the front of PFSMA jet-dyed polyester fabric was 39.9% higher than that of the pure liquid disperse red jet-dyed fabric. The simulated fixation rate was 87.9%, approximately 2.9 times higher than that of the PA wash-free jet-dyed fabric. The color fastness to dry rubbing reached level 4 and the color fastness to wet rubbing reached level 3-4, which was one level higher than that of pure liquid disperse red jet-dyed fabrics. The color fastness to soaping reached grade 5 and the color fastness to heat compression reached grades 4-5 and above. The fabric was a little firmer but smoother. The color properties, color fastness, and hand feeling of the PFSMA wash-free jet-dyed polyester fabric exceeded the levels of commercially available adhesives.
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Affiliation(s)
- Lili Wang
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Huixian Dong
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Keying Zheng
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Nasha Zeng
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Minghua Wu
- Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Xi Wang
- Hangzhou Honghua Digital Technology Co., Ltd., Hangzhou 310052, PR China
| | - Huijun Li
- Hangzhou Huasi Xiasha Textile Technology Co., LTD., Hangzhou 311199, PR China
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Khan MS, Kulkarni AA. Dynamics of Drop Formation in the Presence of Interfacial Mass Transfer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:12627-12639. [PMID: 37625140 DOI: 10.1021/acs.langmuir.3c01309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
The dynamics of drop formation have been investigated in the presence of interfacial mass transfer through controlled flow visualization experiments. The mixtures of n-hexane (solvent) and acetone (solute) were used as a dispersed phase, having different initial compositions varying over a broad range. Drops were formed at the submerged position in the continuous phase (water) at the same operating flow conditions. The unsteady force balance model is developed to analyze the implications of the simultaneously occurring interfacial transfer of the solute on the formation dynamics in real time, and predictions are validated with experimental results. Based on initial compositions, the analysis of the transient drop shape shows a sharp transition in the drop formation regime. At lower initial solute concentrations, i.e., ϕ0 < 0.2, axisymmetric drop formation occurs and the interfacial solute transfer has negligible effects on the formation dynamics. Over an intermediate range of solute concentrations, i.e., 0.2 < ϕ0 < 0.5, Marangoni instability is triggered along the evolving interface, and therefore, the interface deformations and contractions occur during the drop formation. At ϕ0 = 0.5, the drop takes highly nonaxisymmetric shapes and remains away from equilibrium until its detachment from an orifice. For ϕ0 > 0.5, the spontaneous ejection of plumes of the solute results in the rapid generation of multiple droplets of smaller size. This work shows that higher solute concentration gradients not only lead to faster solute transport but also induce strong interfacial instability simultaneously. Thus, the coupled effects of transient change in composition and fluid properties govern the drop size and its formation time in such systems under non-equilibrium.
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Affiliation(s)
- Muzammilanwar S Khan
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amol A Kulkarni
- Chemical Engineering and Process Development Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Suppression and Utilization of Satellite Droplets for Inkjet Printing: A Review. Processes (Basel) 2022. [DOI: 10.3390/pr10050932] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Inkjet printing, initially invented for text and pattern printing, has been extensively used to fabricate electronic, mechanical, and even biological devices. Numerous reviews focused on the mechanisms, development, and application of inkjet printing have been published in recent years. However, a small review has focused on the satellite droplets during inkjet printing. Satellite droplets have long been recognized as an undesirable byproduct in the inkjet community since they potentially blur the printing patterns, polluting the printer and the air. Numerous efforts have been made to avoid or suppress the generation of satellite droplets since the inkjet’s birth. However, recent studies demonstrated the delicately utilizing of the satellite for realizing extremely high printing resolution otherwise impossible for the traditional inkjet printing. In this review, we focus on the formation mechanisms of satellites, efforts made to suppress satellites, and techniques developed to utilize satellites, distinguishing them from the existing inkjet printing reviews.
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Rastgar S, Pleis S, Zhang Y, Wittstock G. Dispensing Single Drops as Electrochemical Reactors. ChemElectroChem 2022. [DOI: 10.1002/celc.202200004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shokoufeh Rastgar
- Carl von Ossietzky University of Oldenburg: Carl von Ossietzky Universitat Oldenburg Institute of Chemistry GERMANY
| | - Sebastian Pleis
- Carl von Ossietzky University of Oldenburg: Carl von Ossietzky Universitat Oldenburg Institute of Chemistry GERMANY
| | - Yanzhen Zhang
- China University of Petroleum Huadong - Qingdao Campus College of Mechanical and Electronic Engineering CHINA
| | - Gunther Wittstock
- Carl von Ossietzky University of Oldenburg: Carl von Ossietzky Universitat Oldenburg Institute of Chemistry Carl von Ossietzky Str. 9-11 W3 1-105 26111 Oldenburg GERMANY
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Li D, Cao Y, Huang B, Han M, Wu X, Sun Q, Zheng C, Zhao L, Ma C, Jin H, Wang X, Liu Y, Zhang Y. Active Femtoliter Droplet Generation in Microfluidics by Confined Interface Vibration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1297-1305. [PMID: 33428403 DOI: 10.1021/acs.langmuir.0c03368] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The precise and effective generation of micron-sized droplets is one of the most common and important issues for droplet-based microfluidics. Active droplet generation makes use of additional energy input in promoting interfacial instabilities for droplet generation. Here, we report a new technique for the active generation of femtoliter droplets in microfluidic systems using confined interfacial vibration (CIV). The CIV is formed at the orifice of a traditional inkjet nozzle first by pushing the liquid out and then pulling it back. Droplets are pinched off during the withdrawal process, and this is different from the current active droplet generation techniques, which only monodirectionally push the liquid out. Droplets with radius ranging from ca. 1 to 28 μm can be actively generated by CIV at an orifice with radius 30 μm, distinguishing from conventional active generation techniques in which the droplets are always comparable or slightly bigger than the orifice. Experimental results showed that the droplet volume can be customized by controlling the intensity of the CIV. The inherent digital nature of the inkjet technique enables easy and precise regulating of the droplet volume, making it seamlessly compatible with the digital microfluidic systems.
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Affiliation(s)
- Dege Li
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yi Cao
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Bingfang Huang
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Molong Han
- Centre of Micro-photonics, Swinburne University of Technology, Melbourne 3122, Australia
| | - Xinlei Wu
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Qiang Sun
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Chao Zheng
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, U.K
| | - Lilong Zhao
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Chi Ma
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Hui Jin
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Xiaolong Wang
- Dongying Science and Technology Bureau, Dongying 257000, China
| | - Yonghong Liu
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yanzhen Zhang
- College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China
- Centre of Micro-photonics, Swinburne University of Technology, Melbourne 3122, Australia
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Li D, Huang B, Cao Y, Han M, Wu X, Sun Q, Ma C, Zhao L, Liu P, Zheng C, Dong H, Wang X, Liu Y, Zhang Y. Confined interface vibration for femtoliter droplets generation and manipulation. NANO SELECT 2020. [DOI: 10.1002/nano.202000151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Dege Li
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Bingfang Huang
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Yi Cao
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Molong Han
- Centre of Micro‐photonics Swinburne University of Technology Melbourne Australia
| | - Xinlei Wu
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Qiang Sun
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Chi Ma
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Lilong Zhao
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Peng Liu
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Chao Zheng
- Department of Chemical and Process Engineering University of Surrey Guildford UK
| | - Hang Dong
- School of Mechanical Engineering Xinjiang University Urumqi China
| | - Xiaolong Wang
- Dongying Science and Technology Bureau Dongying China
| | - Yonghong Liu
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
| | - Yanzhen Zhang
- College of Mechanical and Electronic Engineering China University of Petroleum (East China) Qingdao China
- Centre of Micro‐photonics Swinburne University of Technology Melbourne Australia
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Arrabito G, Ferrara V, Bonasera A, Pignataro B. Artificial Biosystems by Printing Biology. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907691. [PMID: 32511894 DOI: 10.1002/smll.201907691] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 05/09/2020] [Indexed: 05/09/2023]
Abstract
The continuous progress of printing technologies over the past 20 years has fueled the development of a plethora of applications in materials sciences, flexible electronics, and biotechnologies. More recently, printing methodologies have started up to explore the world of Artificial Biology, offering new paradigms in the direct assembly of Artificial Biosystems (small condensates, compartments, networks, tissues, and organs) by mimicking the result of the evolution of living systems and also by redesigning natural biological systems, taking inspiration from them. This recent progress is reported in terms of a new field here defined as Printing Biology, resulting from the intersection between the field of printing and the bottom up Synthetic Biology. Printing Biology explores new approaches for the reconfigurable assembly of designed life-like or life-inspired structures. This work presents this emerging field, highlighting its main features, i.e., printing methodologies (from 2D to 3D), molecular ink properties, deposition mechanisms, and finally the applications and future challenges. Printing Biology is expected to show a growing impact on the development of biotechnology and life-inspired fabrication.
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Affiliation(s)
- Giuseppe Arrabito
- Department of Physics and Chemistry - Emilio Segrè, University of Palermo, Viale delle Scienze, Building 17, Palermo, 90128, Italy
| | - Vittorio Ferrara
- Department of Physics and Chemistry - Emilio Segrè, University of Palermo, Viale delle Scienze, Building 17, Palermo, 90128, Italy
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria, 6, Catania, 95125, Italy
| | - Aurelio Bonasera
- Department of Physics and Chemistry - Emilio Segrè, University of Palermo, Viale delle Scienze, Building 17, Palermo, 90128, Italy
| | - Bruno Pignataro
- Department of Physics and Chemistry - Emilio Segrè, University of Palermo, Viale delle Scienze, Building 17, Palermo, 90128, Italy
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Qiao Y, Yao Y, Liu Y, Chen C, Wang X, Zhong G, Liu D, Hu L. Thermal Shock Synthesis of Nanocatalyst by 3D-Printed Miniaturized Reactors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000509. [PMID: 32378322 DOI: 10.1002/smll.202000509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/26/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
High temperature synthesis and treatments are ubiquitous in chemical reactions and material manufacturing. However, conventional sintering furnaces are bulky and inefficient with a narrow temperature range (<1500 K) and slow heating rates (<100 K min-1 ), which are undesirable for many applications that require transient heating to produce ideal nanostructures. Herein, a 3D-printed, miniaturized reactor featuring a dense micro-grid design is developed to maximize the material contact and therefore acheive highly efficient and controllable heating. By 3D printing, a versatile, miniaturized reactor with microscale features can be constructed, which can reach a much wider temperature range (up to ≈3000 K) with ultrafast heating/cooling rates of ≈104 K s-1 . To demonstrate the utility of the design, rapid and batch synthesis of Ru nanoparticles supported in ordered mesoporous carbon is performed by transient heating (1500 K, 500 ms). The resulting ultrafine and uniform Ru nanoparticles (≈2 nm) can serve as a cathode in Li-CO2 batteries with good cycling stability. The miniaturized reactor, with versatile shape design and highly controllable heating capabilities, provides a platform for nanocatalyst synthesis with localized and ultrafast heating toward high temperatures that is otherwise challenging to achieve.
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Affiliation(s)
- Yun Qiao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Yonggang Yao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Yang Liu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Chaoji Chen
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Xizheng Wang
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Geng Zhong
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Dapeng Liu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
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Teo MY, Kee S, RaviChandran N, Stuart L, Aw KC, Stringer J. Enabling Free-Standing 3D Hydrogel Microstructures with Microreactive Inkjet Printing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1832-1839. [PMID: 31820627 DOI: 10.1021/acsami.9b17192] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Reactive inkjet printing holds great prospect as a multimaterial fabrication process because of its unique advantages involving customization, miniaturization, and precise control of droplets for patterning. For inkjet printing of hydrogel structures, a hydrogel precursor (or cross-linker) is printed onto a cross-linker (or precursor) bath or a substrate. However, the progress of patterning and design of intricate hydrogel structures using the inkjet printing technique is limited by the erratic interplay between gelation and motion control. Accordingly, microreactive inkjet printing (MRIJP) was applied to demonstrate a spontaneous 3D printing of hydrogel microstructures by using alginate as the model system. In addition, a printable window within the capillary number-Weber number for the MRIJP technique demonstrated the importance of velocity to realization of in-air binary droplet collision. Finally, systematic analysis shows that the structure and diffusion coefficient of hydrogels are important factors that affect the shape of printed hydrogels over time. Based on such a fundamental understanding of MRIJP of hydrogels, the fabrication process and the structure of hydrogels can be controlled and adapt for 2D/3D microstructure printing of any low-viscosity (<40 cP) reactive inks, with a representative tissue-mimicking structure of a ∼200 μm diameter hollow tube presented in this work.
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10
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Arrabito G, Cavaleri F, Porchetta A, Ricci F, Vetri V, Leone M, Pignataro B. Printing Life-Inspired Subcellular Scale Compartments with Autonomous Molecularly Crowded Confinement. ACTA ACUST UNITED AC 2019; 3:e1900023. [PMID: 32648672 DOI: 10.1002/adbi.201900023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/03/2019] [Indexed: 12/16/2022]
Abstract
A simple, rapid, and highly controlled platform to prepare life-inspired subcellular scale compartments by inkjet printing has been developed. These compartments consist of fL-scale aqueous droplets (few µm in diameter) incorporating biologically relevant molecular entities with programmed composition and concentration. These droplets are ink-jetted in nL mineral oil drop arrays allowing for lab-on-chip studies by fluorescence microscopy and fluorescence life time imaging. Once formed, fL-droplets are stable for several hours, thus giving the possibility of readily analyze molecular reactions and their kinetics and to verify molecular behavior and intermolecular interactions. Here, this platform is exploited to unravel the behavior of different molecular probes and biomolecular systems (DNA hairpins, enzymatic cascades, protein-ligand couples) within the compartments. The fL-scale size induces the formation of molecularly crowded confined shell structures (hundreds of nanometers in thickness) at the droplet surface, allowing discovery of specific features (e.g., heterogeneity, responsivity to molecular triggers) that are mediated by the intermolecular interactions in these peculiar environments. The presented results indicate the possibility of using this platform for designing nature-inspired confined reactors allowing for a deepened understanding of molecular confinement effects in living subcellular compartments.
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Affiliation(s)
- Giuseppe Arrabito
- Department of Physics and Chemistry, University of Palermo, Viale delle Scienze, Parco d'Orleans II, 90128, Palermo, Italy
| | - Felicia Cavaleri
- Department of Physics and Chemistry, University of Palermo, Viale delle Scienze, Parco d'Orleans II, 90128, Palermo, Italy
| | - Alessandro Porchetta
- Department of Chemical Science and Technologies, University of Rome, Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Francesco Ricci
- Department of Chemical Science and Technologies, University of Rome, Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Valeria Vetri
- Department of Physics and Chemistry, University of Palermo, Viale delle Scienze, Parco d'Orleans II, 90128, Palermo, Italy
| | - Maurizio Leone
- Department of Physics and Chemistry, University of Palermo, Viale delle Scienze, Parco d'Orleans II, 90128, Palermo, Italy
| | - Bruno Pignataro
- Department of Physics and Chemistry, University of Palermo, Viale delle Scienze, Parco d'Orleans II, 90128, Palermo, Italy
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Sun Y, Song W, Sun X, Zhang S. Inkjet-Printing Patterned Chip on Sticky Superhydrophobic Surface for High-Efficiency Single-Cell Array Trapping and Real-Time Observation of Cellular Apoptosis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31054-31060. [PMID: 30148358 DOI: 10.1021/acsami.8b10703] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Single-cell assays have broad applications in cellular studies, tissue engineering, fundamental studies of cell-cell interactions, and understanding of cell-to-cell variations. Most existing methods for micron-sized cell patterning are still based on lithography-based microfabrication process. Thus, exploiting new mask-free strategies while maintaining high-precision single-cell patterning is still a great challenge. Here, we presented a facile, low-cost, and mask-free approach for constructing high-resolution patterning on sticky superhydrophobic (SH) substrates based on inkjet printing with ordinary precision. In this work, the SH surface with both high contact angle and relatively high contact angle hysteresis can not only obtain high-resolution spots but also avoid droplets bouncing behavior. We improved the feature size of printed protein spots as small as 4 μm, which is much smaller than protein spots used for single-cell trapping. Moreover, with the assistance of a narrow microchannel, the inkjet-printing patterned chip with fibronectin ink allows for fast and high-efficiency trapping of multiple single-cell arrays. Using this method, single-cell occupancy could reach approximately 81% within 30 min on subcellular-sized patterning chip, and there was no significant effect on cell viability. As a proof of concept, this chip has been applied to study the real-time apoptosis of single cells and demonstrated the potential in cells' heterogeneity analysis.
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Affiliation(s)
- Yingnan Sun
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Makers, College of Chemistry and Chemical Engineering , Linyi University , Linyi , Shandong 276005 , P. R. China
| | - Wenhua Song
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Makers, College of Chemistry and Chemical Engineering , Linyi University , Linyi , Shandong 276005 , P. R. China
| | - Xiaohan Sun
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Makers, College of Chemistry and Chemical Engineering , Linyi University , Linyi , Shandong 276005 , P. R. China
| | - Shusheng Zhang
- Shandong Provincial Key Laboratory of Detection Technology for Tumor Makers, College of Chemistry and Chemical Engineering , Linyi University , Linyi , Shandong 276005 , P. R. China
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Zhang Y, Li D, Liu Y, Wittstock G. Printing with Satellite Droplets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802583. [PMID: 30176113 DOI: 10.1002/smll.201802583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 08/04/2018] [Indexed: 06/08/2023]
Abstract
Despite their specific methodologies, all current noncontact printing techniques such as inkjet printing (IJP), involve the break-up of a liquid meniscus during the separation of the ink droplet from the bulk ink reservoir. Often, the break-up of a liquid meniscus results in the formation of one or more satellite droplet whose volumes are several orders of magnitude smaller than the primary droplet. Many attempts are directed to suppress or control the formation of satellite droplets because they blur the printing result. For the first time, a simple mechanism by which a single satellite droplet is exclusively formed and directed to the substrate by a gas stream while the primary droplet remains attached to a metal rod used for controlling the formation and break-up of the meniscus is reported. High printing resolution is demonstrated by satellite droplets printing (SDP) without the need for small orifices which are prone to clogging. Furthermore, the droplet generation from a large orifice enables SDP to handle viscous inks which has remained challenging for traditional IJP.
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Affiliation(s)
- Yanzhen Zhang
- Carl von Ossietzky University of Oldenburg, School of Mathematics and Science, Center of Interface Sciences, Institute of Chemistry, D-26111, Oldenburg, Germany
| | - Dege Li
- China University of Petroleum, College of Mechanical and Electronic Engineering, Qingdao, 266580, China
| | - Yonghong Liu
- China University of Petroleum, College of Mechanical and Electronic Engineering, Qingdao, 266580, China
| | - Gunther Wittstock
- Carl von Ossietzky University of Oldenburg, School of Mathematics and Science, Center of Interface Sciences, Institute of Chemistry, D-26111, Oldenburg, Germany
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