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Jabbarzadeh A. Effect of molecular branching and surface wettability on solid-liquid surface tension and line-tension of liquid alkane surface nanodroplets. J Colloid Interface Sci 2024; 666:355-370. [PMID: 38603878 DOI: 10.1016/j.jcis.2024.04.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/27/2024] [Accepted: 04/02/2024] [Indexed: 04/13/2024]
Abstract
HYPOTHESIS Surface nanodroplets have important technological applications. Previous experiments and simulations have shown that their contact angle deviates from Young's equation. A modified version of Young's equation considering the three-phase line tension (τ) has been widely used in literature, and a wide range of values for τ are reported. We have recently shown that molecular branching affects the liquid-vapour surface tension γlv of liquid alkanes. Therefore, the wetting behaviour of surface nanodroplets should be affected by molecular branching. This study conducted molecular dynamics (MD) simulations to gain insight into the wetting behaviour of linear and branched alkane nanodroplets on oleophilic and oleophobic surfaces. We aim to examine the Young equation's validity and branching's effect on fundamental properties, including solid-liquid surface tension γsl and line tension τ. SIMULATIONS The simulations were performed on a linear alkane, triacontane (C30H62), as well as four of its branched isomers: 2,6,13,17-tetrapropyloctadecane,2,6,9,10,13,17-hexaethyloctadecane, 2,5,7,8,11,12,15-heptaethylhexadecane and 2,3,6,7,10,11-hexapropyldodecane. Nanodroplets with a diameter of approximately 15 nm were released onto the surfaces, and their contact angles were measured. Additionally, using a novel approach, the solid-liquid surface tension (γsl), the validity of Young's equation and line tension for all alkane and surface combinations are determined. FINDINGS It was discovered that the calculated γsl, deviated from the theoretical γsl,Young predicted from Young's equation for all alkanes on oleophilic surfaces. However, this deviation was minimal for branched alkanes on the oleophobic surfaces but more significant for the linear alkane. The findings indicated that γsl < 0 for oleophilic surfaces and γsl > 0 for oleophobic surfaces. Moreover, it was observed that |γsl| was lower for branched molecules and decreased as branching increased. Line tension values were then determined through a novel method, showing τ was positive for oleophilic surfaces ranging from 1.30 × 10-10 to 6.27 × 10-11N. On an oleophobic surface, linear alkane shows a negative line tension of -1.15 × 10-10N and branched alkanes up to two orders of magnitude lower values ranging from -2.09 × 10-12 to 2.43 × 10-11N. Line tension values between -1.15 × 10-10 and + 1.1 × 10-10N are calculated for various linear alkane and surface combinations. These findings show the dependence of line tension on the contact angle and branching, demonstrating that for linear alkanes, τ is significant, whereas, for branched alkanes, line tension is smaller or negligible for large contact angles.
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Affiliation(s)
- Ahmad Jabbarzadeh
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, NSW 2006, Australia; Sydney Nano Institute, The University of Sydney, NSW 2006, Australia.
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2
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Sun Z, Khlusov IA, Evdokimov KE, Konishchev ME, Kuzmin OS, Khaziakhmatova OG, Malashchenko VV, Litvinova LS, Rutkowski S, Frueh J, Kozelskaya AI, Tverdokhlebov SI. Nitrogen-doped titanium dioxide films fabricated via magnetron sputtering for vascular stent biocompatibility improvement. J Colloid Interface Sci 2022; 626:101-112. [DOI: 10.1016/j.jcis.2022.06.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 06/11/2022] [Accepted: 06/22/2022] [Indexed: 10/31/2022]
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3
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Zhao Z, Si T, Kozelskaya AI, Akimchenko IO, Tverdokhlebov SI, Rutkowski S, Frueh J. Biodegradable magnesium fuel-based Janus micromotors with surfactant induced motion direction reversal. Colloids Surf B Biointerfaces 2022; 218:112780. [PMID: 35988310 DOI: 10.1016/j.colsurfb.2022.112780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/10/2022] [Accepted: 08/15/2022] [Indexed: 11/29/2022]
Abstract
The speed and motion directionality of bubble-propelled micromotors is dependent on bubble lifetime, bubble formation frequency and bubble stabilization. Absence and presence of bubble stabilizing agents should significantly influence speed and propulsion pattern of a micromotor, especially for fast-diffusing molecules like hydrogen. This study demonstrates a fully biodegradable Janus structured micromotor, propelled by hydrogen bubbles generated by the chemical reaction between hydrochloric acid and magnesium. Six different concentrations of hydrochloric acid and five different concentrations of the surfactant Triton X-100 were tested, which also cover the critical micelle concentration at a pH corresponding to an empty stomach. The Janus micromotor reverses its propulsion direction depending on the availability and concentration of a surfactant. Upon surfactant-free condition, the Janus micromotor is propelled by bubble cavitation, causing the micromotor to be pulled at high speed for short time intervals into the direction of the imploding bubble and thus backwards. In case of available surfactant above the critical micelle concentration, the Janus micromotor is pushed forward by the generated bubbles, which emerge at high frequency and form a bubble trail. The finding of the propulsion direction reversal effect demonstrates the importance to investigate the motion properties of artificial micromotors in a variety of different environments prior to application, especially with surfactants, since biological media often contain large amounts of surface-active components.
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Affiliation(s)
- Zewei Zhao
- Faculty of Medicine and Health, Ministry of Education, Harbin Institute of Technology, XiDaZhi Street 92, Mingde Building, Harbin 150001, PR China
| | - Tieyan Si
- School of Physics, Yikuang Street 2, 2H Harbin Institute of Technology, Harbin 150080, PR China
| | - Anna I Kozelskaya
- Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russian Federation.
| | - Igor O Akimchenko
- Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russian Federation
| | | | - Sven Rutkowski
- Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russian Federation.
| | - Johannes Frueh
- Faculty of Medicine and Health, Ministry of Education, Harbin Institute of Technology, XiDaZhi Street 92, Mingde Building, Harbin 150001, PR China; Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russian Federation.
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Minot S, Gablin C, Gassenq A, Bard A, Symonds C, Benoit JM, Bellessa J, Leonard D, Bessueille F. Exploring the benefits of surface analysis techniques to develop double multilayer transfer printing of J-Aggregates cyanine dyes by integrating L-b-L and μCp processes. Talanta 2022; 250:123731. [PMID: 35841661 DOI: 10.1016/j.talanta.2022.123731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/22/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022]
Abstract
Layer-by-layer self-assembly (L-b-L assembly) makes possible to obtain polyelectrolyte multilayers (PEMs) and one of the polyelectrolytes could be replaced by a dye molecule to obtain multilayers which may exhibit optical properties of great interest. On the other hand, μCp has become a routine technique for the preparation of micro- and nanostructured surfaces. In our development in progress of a surface engineering strategy to transfer J-Agg cyanine dyes onto surfaces by integrating L-b-L process and μCp, this contribution highlights how surface analysis imaging techniques can bring valuable information for the development of the process involving a double Multilayers Transfer Printing (MTP) with a Moiré effect. Key parameters sustaining image interpretation are difference in deposit thickness (optical microscopy, atomic force microscopy, scanning electron microscopy), in roughness (atomic force microscopy and scanning electron microscopy), in charge effect (scanning electron microscopy) and the chemical contrast between unprinted and printed areas (time-of-flight secondary ion mass spectrometry).
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Affiliation(s)
- Sylvain Minot
- Univ Lyon, CNRS, Université Claude Bernard Lyon1, Institut des Sciences Analytiques, UMR5280, 5, Rue de La Doua, F-69100, Villeurbanne, France; Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - Corinne Gablin
- Univ Lyon, CNRS, Université Claude Bernard Lyon1, Institut des Sciences Analytiques, UMR5280, 5, Rue de La Doua, F-69100, Villeurbanne, France
| | - Alban Gassenq
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - Antoine Bard
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - Clémentine Symonds
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - Jean-Michel Benoit
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - Joël Bellessa
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - Didier Leonard
- Univ Lyon, CNRS, Université Claude Bernard Lyon1, Institut des Sciences Analytiques, UMR5280, 5, Rue de La Doua, F-69100, Villeurbanne, France
| | - François Bessueille
- Univ Lyon, CNRS, Université Claude Bernard Lyon1, Institut des Sciences Analytiques, UMR5280, 5, Rue de La Doua, F-69100, Villeurbanne, France.
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5
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Zhao Z, Wu Z, Rutkowski S, Tverdokhlebov SI, Frueh J. Influence of the pH value and the surfactant concentration on the pumping performance of magnesium fuel based Janus micropumps. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Kurochkin MA, Sindeeva OA, Brodovskaya EP, Gai M, Frueh J, Su L, Sapelkin A, Tuchin VV, Sukhorukov GB. Laser-triggered drug release from polymeric 3-D micro-structured films via optical fibers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110664. [DOI: 10.1016/j.msec.2020.110664] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 12/25/2019] [Accepted: 01/13/2020] [Indexed: 10/25/2022]
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7
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Liu Y, Gai M, Sukvanitvichai D, Frueh J, Sukhorukov GB. pH dependent degradation properties of lactide based 3D microchamber arrays for sustained cargo release. Colloids Surf B Biointerfaces 2020; 188:110826. [PMID: 32007703 DOI: 10.1016/j.colsurfb.2020.110826] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 12/18/2022]
Abstract
Encapsulation of small water soluble molecules is important in a large variety of applications, ranging from medical substance releasing implants in the field of medicine over release of catalytically active substances in the field of chemical processing to anti-corrosion agents in industry. In this work polylactic acid (PLA) based hollow-structured microchamber (MC) arrays are fabricated via one-step dip coating of a silicone rubber stamp into PLA solution. These PLA MCs are able to retain small water soluble molecules (Rhodamine B) stably entrapped within aqueous environments. It is shown, that degradation of PLA MCs strongly depends on environmental conditions like surrounding pH and follows first order degradation kinetics. This pH dependent PLA MC degradation can be utilized to control the release kinetics of encapsulated cargo.
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Affiliation(s)
- Yuechi Liu
- Key Laboratory of Micro-systems and Micro-structures Manufacturing Ministry of Education, Harbin Institute of Technology, Harbin, 150001, China
| | - Meiyu Gai
- Max Plank Institute of Polymer Research, Ackermannweg 10, 55128, Mainz, Germany; School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom.
| | - Dusita Sukvanitvichai
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Johannes Frueh
- Key Laboratory of Micro-systems and Micro-structures Manufacturing Ministry of Education, Harbin Institute of Technology, Harbin, 150001, China; Department of Civil, Environmental and Geomatic Engineering, ETH Zürich, Stefano-Franscini-Platz 3, 8093, Zürich, Switzerland.
| | - Gleb B Sukhorukov
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom; Skolkovo Institute of Science and Technology, Moscow, 143025, Russia.
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8
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Hauptmann N, Lian Q, Ludolph J, Rothe H, Hildebrand G, Liefeith K. Biomimetic Designer Scaffolds Made of D,L-Lactide- ɛ-Caprolactone Polymers by 2-Photon Polymerization. TISSUE ENGINEERING. PART B, REVIEWS 2019; 25:167-186. [PMID: 30632460 PMCID: PMC6589497 DOI: 10.1089/ten.teb.2018.0284] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 01/01/2019] [Indexed: 11/21/2022]
Abstract
IMPACT STATEMENT In tissue engineering (TE), the establishment of cell targeting materials, which mimic the conditions of the physiological extracellular matrix (ECM), seems to be a mission impossible without advanced materials and fabrication techniques. With this in mind we established a toolbox based on (D,L)-lactide-ɛ-caprolactone methacrylate (LCM) copolymers in combination with a nano-micromaskless lithography technique, the two-photon polymerization (2-PP) to mimic the hierarchical structured and complex milieu of the natural ECM. To demonstrate the versatility of this toolbox, we choose two completely different application scenarios in bone and tumor TE to show the high potential of this concept in therapeutic and diagnostic application.
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Affiliation(s)
- Nicole Hauptmann
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, Heilbad Heiligenstadt, Germany
| | - Qilin Lian
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, Heilbad Heiligenstadt, Germany
| | - Johanna Ludolph
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, Heilbad Heiligenstadt, Germany
| | - Holger Rothe
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, Heilbad Heiligenstadt, Germany
| | - Gerhard Hildebrand
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, Heilbad Heiligenstadt, Germany
| | - Klaus Liefeith
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, Heilbad Heiligenstadt, Germany
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9
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Gai M, Li W, Frueh J, Sukhorukov GB. Polylactic acid sealed polyelectrolyte complex microcontainers for controlled encapsulation and NIR-Laser based release of cargo. Colloids Surf B Biointerfaces 2019; 173:521-528. [DOI: 10.1016/j.colsurfb.2018.10.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 10/03/2018] [Accepted: 10/05/2018] [Indexed: 01/14/2023]
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10
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Studying of Surfactant Excess Separation from Non-aqueous Quantum Dots Solution on its Monolayer Formation Process. BIONANOSCIENCE 2018. [DOI: 10.1007/s12668-018-0537-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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11
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Polyelectrolyte multilayer microchamber-arrays for in-situ cargo release: Low frequency vs . medical frequency range ultrasound. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.03.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Wlodek M, Kolasinska-Sojka M, Wasilewska M, Bikondoa O, Briscoe WH, Warszynski P. Interfacial and structural characteristics of polyelectrolyte multilayers used as cushions for supported lipid bilayers. SOFT MATTER 2017; 13:7848-7855. [PMID: 28976532 DOI: 10.1039/c7sm01645j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The surface properties of polyelectrolyte multilayers (PEMs) obtained via sequential adsorption of oppositely charged polyions from their solutions and used as cushions for supported lipid bilayers were investigated. Five types of polyelectrolytes were used: cationic polyethyleneimine (PEI), poly(diallyldimethylammonium)chloride (PDADMAC), and poly-l-lysine hydrobromide (PLL); and anionic polysodium 4-styrenesulfonate (PSS) and poly-l-glutamic acid sodium (PGA). The wettability and surface free energy of the PEMs were determined by contact angle measurements using sessile drop analysis. Electrokinetic characterisation of the studied films was performed by streaming potential measurements of selected multilayers and the structure of the polyelectrolyte multilayer was characterized by synchrotron X-ray reflectometry. The examined physicochemical properties of the PEMs were correlated with the kinetics of the formation of supported lipid bilayers atop the PEM cushion.
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Affiliation(s)
- M Wlodek
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland.
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Gai M, Frueh J, Tao T, Petrov AV, Petrov VV, Shesterikov EV, Tverdokhlebov SI, Sukhorukov GB. Polylactic acid nano- and microchamber arrays for encapsulation of small hydrophilic molecules featuring drug release via high intensity focused ultrasound. NANOSCALE 2017; 9:7063-7070. [PMID: 28513733 DOI: 10.1039/c7nr01841j] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Long term encapsulation combined with spatiotemporal release for a precisely defined quantity of small hydrophilic molecules on demand remains a challenge in various fields ranging from medical drug delivery, controlled release of catalysts to industrial anti-corrosion systems. Free-standing individually sealed polylactic acid (PLA) nano- and microchamber arrays were produced by one-step dip-coating a PDMS stamp into PLA solution for 5 s followed by drying under ambient conditions. The wall thickness of these hydrophobic nano-microchambers is tunable from 150 nm to 7 μm by varying the PLA solution concentration. Furthermore, small hydrophilic molecules were successfully in situ precipitated within individual microchambers in the course of solvent evaporation after sonicating the PLA@PDMS stamp to remove air-bubbles and to load the active substance containing solvent. The cargo capacity of single chambers was determined to be in the range of several picograms, while it amounts to several micrograms per cm2. Two different methods for sealing chambers were compared: microcontact printing versus dip-coating whereby microcontact printing onto a flat PLA sheet allows for entrapment of micro-air-bubbles enabling microchambers with both ultrasound responsiveness and reduced permeability. Cargo release triggered by external high intensity focused ultrasound (HIFU) stimuli is demonstrated by experiment and compared with numerical simulations.
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Affiliation(s)
- Meiyu Gai
- Queen Mary University of London, School of Engineering and Materials Science, Mile End, Eng, 215, London E1 4NS, UK.
| | - Johannes Frueh
- Micro/Nano Technology Research Centre, Harbin Institute of Technology, Yikuang Street 2, Harbin 150080, China.
| | - Tianyi Tao
- Queen Mary University of London, School of Engineering and Materials Science, Mile End, Eng, 215, London E1 4NS, UK.
| | - Arseniy V Petrov
- Remote Controlled Theranostic Systems Lab, Educational Research Institute of Nanostructures and Biosystems, Saratov State University, 83 Astrakhanskaya Street, Saratov 410012, Russia
| | - Vladimir V Petrov
- Remote Controlled Theranostic Systems Lab, Educational Research Institute of Nanostructures and Biosystems, Saratov State University, 83 Astrakhanskaya Street, Saratov 410012, Russia
| | - Evgeniy V Shesterikov
- Experimental Physics Department, Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, Russia
| | - Sergei I Tverdokhlebov
- Experimental Physics Department, Tomsk Polytechnic University, 30 Lenin Avenue, 634050 Tomsk, Russia
| | - Gleb B Sukhorukov
- Queen Mary University of London, School of Engineering and Materials Science, Mile End, Eng, 215, London E1 4NS, UK. and Remote Controlled Theranostic Systems Lab, Educational Research Institute of Nanostructures and Biosystems, Saratov State University, 83 Astrakhanskaya Street, Saratov 410012, Russia and RASA center, Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russia
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Gai M, Frueh J, Kudryavtseva VL, Yashchenok AM, Sukhorukov GB. Polylactic Acid Sealed Polyelectrolyte Multilayer Microchambers for Entrapment of Salts and Small Hydrophilic Molecules Precipitates. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16536-16545. [PMID: 28452456 DOI: 10.1021/acsami.7b03451] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Efficient depot systems for entrapment and storage of small water-soluble molecules are of high demand for wide variety of applications ranging from implant based drug delivery in medicine and catalysis in chemical processes to anticorrosive systems in industry where surface-mediated active component delivery is required on a time and site specific manner. This work reports the fabrication of individually sealed hollow-structured polyelectrolyte multilayer (PEM) microchamber arrays based on layer-by-layer self-assembly as scaffolds and microcontact printing. These PEM chambers are composed out of biocompatible polyelectrolytes and sealed by a monolayer of hydrophobic biocompatible and biodegradable polylactic acid (PLA). Coating the chambers with hydrophobic PLA allows for entrapment of a microair-bubble in each chamber that seals and hence drastically reduces the PEM permeability. PLA@PEM microchambers are proven to enable prolonged subaqueous storage of small hydrophilic salts and molecules such as crystalline NaCl, doxicycline, and fluorescent dye rhodamine B. The presented microchambers are able to entrap air bubbles and demonstrate a novel strategy for entrapment, storage, and protection of micropackaged water-soluble substances in precipitated form. These chambers allow triggered release as demonstrated by ultrasound responsiveness of the chambers. Low-frequency ultrasound exposure is utilized for microchamber opening and payload release.
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Affiliation(s)
- Meiyu Gai
- School of Engineering and Materials Science, Queen Mary University of London , Mile End, Eng, 215, London E1 4NS, United Kingdom
| | - Johannes Frueh
- State Key laboratory of Micro/Nano Technology Research Centre, Harbin Institute of Technology , Yikuang Street 2, Harbin 150080, China
| | - Valeriya L Kudryavtseva
- RASA Center in Tomsk, Department of Experimental Physics, National Research Tomsk Polytechnic University , Tomsk 634050, Russia
| | - Alexey M Yashchenok
- Remote Controlled Theranostic Systems Lab, Educational Research Institute of Nanostructures and Biosystem, Saratov State University , 83 Astrakhanskaya Street, Saratov 410012, Russia
| | - Gleb B Sukhorukov
- School of Engineering and Materials Science, Queen Mary University of London , Mile End, Eng, 215, London E1 4NS, United Kingdom
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Hu N, Zhang B, Gai M, Zheng C, Frueh J, He Q. Forecastable and Guidable Bubble-Propelled Microplate Motors for Cell Transport. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201600795] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/16/2017] [Indexed: 01/13/2023]
Affiliation(s)
- Narisu Hu
- Key Laboratory of Microsystems and Microstructures Manufacturing; Ministry of Education; Micro/Nano Technology Research Centre; Harbin Institute of Technology; Yikuang Street 2 Harbin 150080 China
- Oral Implant Center; Second Affiliated Hospital of Harbin Medical University; Harbin 150086 China
| | - Bin Zhang
- Oral Implant Center; Second Affiliated Hospital of Harbin Medical University; Harbin 150086 China
| | - Meiyu Gai
- School of Materials Engineering; Queen Mary University of London; Mile End Road 215 E1 4NS London UK
| | - Ce Zheng
- Medical Affairs Department; Harbin Medical University; Harbin 150001 China
| | - Johannes Frueh
- Key Laboratory of Microsystems and Microstructures Manufacturing; Ministry of Education; Micro/Nano Technology Research Centre; Harbin Institute of Technology; Yikuang Street 2 Harbin 150080 China
| | - Qiang He
- Key Laboratory of Microsystems and Microstructures Manufacturing; Ministry of Education; Micro/Nano Technology Research Centre; Harbin Institute of Technology; Yikuang Street 2 Harbin 150080 China
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16
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Gai M, Kudryavtseva VL, Sukhorukov GB, Frueh J. Micro-Patterned Polystyrene Sheets as Templates for Interlinked 3D Polyelectrolyte Multilayer Microstructures. BIONANOSCIENCE 2017. [DOI: 10.1007/s12668-017-0403-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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17
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Gai M, Frueh J, Si T, Hu N, Sukhorukov GB, He Q. The collision phenomena of Janus polymer micro-plate motors propelled by oscillating micro-bubbles. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.04.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Gai M, Frueh J, Kudryavtseva VL, Mao R, Kiryukhin MV, Sukhorukov GB. Patterned Microstructure Fabrication: Polyelectrolyte Complexes vs Polyelectrolyte Multilayers. Sci Rep 2016; 6:37000. [PMID: 27830831 PMCID: PMC5103270 DOI: 10.1038/srep37000] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 10/20/2016] [Indexed: 11/12/2022] Open
Abstract
Polyelectrolyte complexes (PEC) are formed by mixing the solutions of oppositely charged polyelectrolytes, which were hitherto deemed “impossible” to process, since they are infusible and brittle when dry. Here, we describe the process of fabricating free-standing micro-patterned PEC films containing array of hollow or filled microchambers by one-step casting with small applied pressure and a PDMS mould. These structures are compared with polyelectrolyte multilayers (PEM) thin films having array of hollow microchambers produced from a layer-by-layer self-assembly of the same polyelectrolytes on the same PDMS moulds. PEM microchambers “cap” and “wall” thickness depend on the number of PEM bilayers, while the “cap” and “wall” of the PEC microchambers can be tuned by varying the applied pressure and the type of patterned mould. The proposed PEC production process omits layering approaches currently employed for PEMs, reducing the production time from ~2 days down to 2 hours. The error-free structured PEC area was found to be significantly larger compared to the currently-employed microcontact printing for PEMs. The sensitivity of PEC chambers towards aqueous environments was found to be higher compared to those composed of PEM.
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Affiliation(s)
- Meiyu Gai
- Micro/Nano Technology Research Centre, Harbin Institute of Technology, Yikuang Street 2, Harbin 150080, China.,School of Engineering and Materials Science, Queen Mary University of London, Mile End, Eng, 215, London, E1 4NS, United Kingdom
| | - Johannes Frueh
- Micro/Nano Technology Research Centre, Harbin Institute of Technology, Yikuang Street 2, Harbin 150080, China
| | - Valeriya L Kudryavtseva
- National Research Tomsk Polytechnic University, RASA Center in Tomsk, Department of Experimental Physics, Tomsk, 634050, Russia
| | - Rui Mao
- School of Engineering and Materials Science, Queen Mary University of London, Mile End, Eng, 215, London, E1 4NS, United Kingdom
| | - Maxim V Kiryukhin
- Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way, Innovis, 08-03, 138634, Singapore
| | - Gleb B Sukhorukov
- School of Engineering and Materials Science, Queen Mary University of London, Mile End, Eng, 215, London, E1 4NS, United Kingdom
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Calcium Carbonate-Based Mucoadhesive Microcontainers for Intranasal Delivery of Drugs Bypassing the Blood–Brain Barrier. BIONANOSCIENCE 2016. [DOI: 10.1007/s12668-016-0212-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Gao Y, Tian J, Wu J, Cao W, Zhou B, Shen R, Wen W. Digital microfluidic programmable stencil (dMPS) for protein and cell patterning. RSC Adv 2016. [DOI: 10.1039/c6ra17633j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Patterning biomolecules and cells on substrates is usually a prerequisite for biological analysis and cell studies.
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Affiliation(s)
- Yibo Gao
- Environmental Science Programs
- Hong Kong University of Science and Technology
- Kowloon
- Hong Kong
- Department of Physics
| | - Jingxuan Tian
- Department of Physics
- Hong Kong University of Science and Technology
- Kowloon
- Hong Kong
| | - Jinbo Wu
- Materials Genome Institute
- Shanghai University
- Shanghai 200444
- PR China
| | - Wenbin Cao
- Department of Physics
- Hong Kong University of Science and Technology
- Kowloon
- Hong Kong
| | - Bingpu Zhou
- Institute of Applied Physics and Materials Engineering
- Faculty of Science and Technology
- University of Macau
- Taipa
- PR China
| | - Rong Shen
- Institute of Physics
- Chinese Academy of Sciences
- Beijing
- PR China
| | - Weijia Wen
- Environmental Science Programs
- Hong Kong University of Science and Technology
- Kowloon
- Hong Kong
- Department of Physics
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Gai M, Frueh J, Hu N, Si T, Sukhorukov GB, He Q. Self-propelled two dimensional polymer multilayer plate micromotors. Phys Chem Chem Phys 2016; 18:3397-401. [DOI: 10.1039/c5cp07697h] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This communication sheds light on the production method and motion patterns of autonomous moving bubble propelled two dimensional micro-plate motors.
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Affiliation(s)
- Meiyu Gai
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Micro/Nano Technology Research Centre
- Harbin Institute of Technology
- Harbin 150080
| | - Johannes Frueh
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Micro/Nano Technology Research Centre
- Harbin Institute of Technology
- Harbin 150080
| | - Narisu Hu
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Micro/Nano Technology Research Centre
- Harbin Institute of Technology
- Harbin 150080
| | - Tieyan Si
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Micro/Nano Technology Research Centre
- Harbin Institute of Technology
- Harbin 150080
| | | | - Qiang He
- Key Laboratory of Microsystems and Microstructures Manufacturing
- Ministry of Education
- Micro/Nano Technology Research Centre
- Harbin Institute of Technology
- Harbin 150080
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