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Castro LDC, Larocca NM, Pessan LA. Effect of Structural Features on the Superhydrophobicity of SiO 2-Based Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:124-131. [PMID: 33347758 DOI: 10.1021/acs.langmuir.0c02598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A detailed correlation between topographical features and wettability of chemically modified coatings based on silica nanoparticles (SiO2) was performed. In this study, hierarchical structures were prepared by the layer-by-layer (LbL) technique using two different approaches: random roughened surfaces were obtained by exploring stacking defects spontaneously arisen after 15, 30, and 45 assembly cycles of 22 nm SiO2, and a particular structure, commonly known as raspberry-like, was obtained by depositing 22 nm SiO2 over the first deposited 400 nm SiO2. As an intrinsic attribute of the assembly process, the average slope of random roughened surfaces seems to be constant and virtually independent of the number of deposited layers. Additionally, the local slopes are always lower than a critical value (Φcrit) required to stabilize the solid-liquid-air interface; thus, a fully wetted Wenzel state is invariably observed with water contact angles (WCAs) ∼130°. On the other hand, since the local slopes of the raspberry-like structure follow a nearly spherical curvature, small SiO2 can stabilize the solid-liquid-air interface by increasing the local contact angle and avoid the deep penetration of water into the surface asperities, resulting in a WCA ∼167°. The results also suggest that nanoroughness might also play an important role in the pinning effect of the solid-liquid-air contact line, favoring the maintenance of superhydrophobicity of raspberry-like surfaces.
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Affiliation(s)
- Lucas D C Castro
- Graduate Program in Materials Science and Engineering, Federal University of São Carlos, via Washington Luiz, Km 235, 13565-905 São Carlos, SP, Brazil
| | - Nelson M Larocca
- Graduate Program in Materials Science and Engineering, Federal University of São Carlos, via Washington Luiz, Km 235, 13565-905 São Carlos, SP, Brazil
| | - Luiz A Pessan
- Graduate Program in Materials Science and Engineering, Federal University of São Carlos, via Washington Luiz, Km 235, 13565-905 São Carlos, SP, Brazil
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2
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Assaifan AK, Al Habis N, Ahmad I, Alshehri NA, Alharbi HF. Scaling-up medical technologies using flexographic printing. Talanta 2020; 219:121236. [PMID: 32887127 DOI: 10.1016/j.talanta.2020.121236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/31/2020] [Accepted: 05/31/2020] [Indexed: 11/17/2022]
Abstract
Medical technologies, such as point-of-care devices and biological and chemical assays which rely on functional materials deposited on top of substrates, are in great demand due to an increase in the prevalence of diseases worldwide. A significant number of these medical technologies are still in their infancy with respect to commercialization because of the high cost, material and complexity of the conventionally available fabrication techniques. As a result, medical technologies, in broad terms, require low cost and mass production fabrication methods in order to overcome the commercialization challenges. Recently, researchers have explored the flexographic printing technique which is widely employed for food packaging and newspaper production. This technique has proved cost-effective, facile, rapid and industrially compatible fabrication technique of functional materials for various applications. In this review, we provide an account of the attempts of flexographic printing made to scale up functional materials on surfaces for biomedical applications. Firstly, we offer justification for demanding high-throughput fabrication techniques. We then present the facile working principle of the flexographic printing and its use in different medical applications, for example chronic disease monitoring devices, colorimetric sensors, electrochemical sensors, assays and drugs. Finally, we discuss challenges of the fabrication technique. The main purpose of this review is to give insights into the usefulness of flexographic printing to the health care industry.
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Affiliation(s)
| | - Nuha Al Habis
- Center of Excellence for Research in Engineering Materials, King Saud University, Riyadh, Saudi Arabia.
| | - Iftikhar Ahmad
- Center of Excellence for Research in Engineering Materials, King Saud University, Riyadh, Saudi Arabia
| | - Naif Ahmed Alshehri
- College of Science Physics Department at Albaha University, Albaha, Saudi Arabia
| | - Hamad F Alharbi
- Mechanical Engineering Department, King Saud University, Riyadh, Saudi Arabia; Center of Excellence for Research in Engineering Materials, King Saud University, Riyadh, Saudi Arabia
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3
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Al-Qatatsheh A, Morsi Y, Zavabeti A, Zolfagharian A, Salim N, Z. Kouzani A, Mosadegh B, Gharaie S. Blood Pressure Sensors: Materials, Fabrication Methods, Performance Evaluations and Future Perspectives. SENSORS (BASEL, SWITZERLAND) 2020; 20:E4484. [PMID: 32796604 PMCID: PMC7474433 DOI: 10.3390/s20164484] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/31/2020] [Accepted: 08/04/2020] [Indexed: 12/14/2022]
Abstract
Advancements in materials science and fabrication techniques have contributed to the significant growing attention to a wide variety of sensors for digital healthcare. While the progress in this area is tremendously impressive, few wearable sensors with the capability of real-time blood pressure monitoring are approved for clinical use. One of the key obstacles in the further development of wearable sensors for medical applications is the lack of comprehensive technical evaluation of sensor materials against the expected clinical performance. Here, we present an extensive review and critical analysis of various materials applied in the design and fabrication of wearable sensors. In our unique transdisciplinary approach, we studied the fundamentals of blood pressure and examined its measuring modalities while focusing on their clinical use and sensing principles to identify material functionalities. Then, we carefully reviewed various categories of functional materials utilized in sensor building blocks allowing for comparative analysis of the performance of a wide range of materials throughout the sensor operational-life cycle. Not only this provides essential data to enhance the materials' properties and optimize their performance, but also, it highlights new perspectives and provides suggestions to develop the next generation pressure sensors for clinical use.
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Affiliation(s)
- Ahmed Al-Qatatsheh
- Faculty of Science, Engineering, and Technology (FSET), Swinburne University of Technology, Melbourne VIC 3122, Australia; (Y.M.); (N.S.)
| | - Yosry Morsi
- Faculty of Science, Engineering, and Technology (FSET), Swinburne University of Technology, Melbourne VIC 3122, Australia; (Y.M.); (N.S.)
| | - Ali Zavabeti
- Department of Chemical Engineering, The University of Melbourne, Parkville VIC 3010, Australia;
| | - Ali Zolfagharian
- Faculty of Science, Engineering and Built Environment, School of Engineering, Deakin University, Waurn Ponds VIC 3216, Australia; (A.Z.); (A.Z.K.)
| | - Nisa Salim
- Faculty of Science, Engineering, and Technology (FSET), Swinburne University of Technology, Melbourne VIC 3122, Australia; (Y.M.); (N.S.)
| | - Abbas Z. Kouzani
- Faculty of Science, Engineering and Built Environment, School of Engineering, Deakin University, Waurn Ponds VIC 3216, Australia; (A.Z.); (A.Z.K.)
| | - Bobak Mosadegh
- Dalio Institute of Cardiovascular Imaging, Weill Cornell Medicine, New York, NY 10065, USA;
| | - Saleh Gharaie
- Faculty of Science, Engineering and Built Environment, School of Engineering, Deakin University, Waurn Ponds VIC 3216, Australia; (A.Z.); (A.Z.K.)
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Naik P, Jaitpal S, Paul D. The Resurgence of Paperfluidics: A new technology for cell, DNA, and blood analysis. IEEE NANOTECHNOLOGY MAGAZINE 2020. [DOI: 10.1109/mnano.2020.2966063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Lantigua D, Kelly YN, Unal B, Camci-Unal G. Engineered Paper-Based Cell Culture Platforms. Adv Healthc Mater 2017; 6. [PMID: 29076283 DOI: 10.1002/adhm.201700619] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/28/2017] [Indexed: 12/16/2022]
Abstract
Paper is used in various applications in biomedical research including diagnostics, separations, and cell cultures. Paper can be conveniently engineered due to its tunable and flexible nature, and is amenable to high-throughput sample preparation and analysis. Paper-based platforms are used to culture primary cells, tumor cells, patient biopsies, stem cells, fibroblasts, osteoblasts, immune cells, bacteria, fungi, and plant cells. These platforms are compatible with standard analytical assays that are typically used to monitor cell behavior. Due to its thickness and porous nature, there are no mass transport limitations to/from the cells in paper scaffolds. It is possible to pattern paper in different scales (micrometer to centimeter), generate modular configurations in 3D, fabricate multicellular and compartmentalized tissue mimetics for clinical applications, and recover cells from the scaffolds for further analysis. 3D paper constructs can provide physiologically relevant tissue models for personalized medicine. Layer-by layer strategies to assemble tissue-like structures from low-cost and biocompatible paper-based materials offer unique opportunities that include understanding fundamental biology, developing disease models, and assembling different tissues for organ-on-paper applications. Paper-based platforms can also be used for origami-inspired tissue engineering. This work provides an overview of recent progress in engineered paper-based biomaterials and platforms to culture and analyze cells.
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Affiliation(s)
- Darlin Lantigua
- Department of Biological Sciences; University of Massachusetts Lowell; One University Avenue Lowell MA 01854 USA
| | - Yan Ni Kelly
- Department of Biomedical Engineering; University of Massachusetts Lowell; One University Avenue Lowell MA 01854 USA
| | - Baris Unal
- Triton Systems, Inc.; 200 Turnpike Road Chelmsford MA 01824 USA
| | - Gulden Camci-Unal
- Department of Chemical Engineering; University of Massachusetts Lowell; One University Avenue Lowell MA 01854 USA
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Yao Y, Zhang C. A novel screen-printed microfluidic paper-based electrochemical device for detection of glucose and uric acid in urine. Biomed Microdevices 2017; 18:92. [PMID: 27628060 DOI: 10.1007/s10544-016-0115-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel screen-printed microfluidic paper-based analytical device with all-carbon electrode-enabled electrochemical assay (SP-ACE-EC-μPAD) has been developed. The fabrication of these devices involved wax screen-printing, which was simple, low-cost and energy-efficient. The working, counter and reference electrodes were screen-printed using carbon ink on the patterned paper devices. Different wax screen-printing processes were examined and optimized, which led to an improved method with a shorter heating time (~5 s) and a lower heating temperature (75 °C). Different printing screens were examined, with a 300-mesh polyester screen yielding the highest quality wax screen-prints. The carbon electrodes were screen-printed on the μPADs and then examined using cyclic voltammetry. The analytical performance of the SP-ACE-EC-μPADs for the detection of glucose and uric acid in standard solutions was investigated. The results were reproducible, with a linear relationship [R(2) = 0.9987 (glucose) or 0.9997 (uric acid)] within the concentration range of interest, and with detection limits as low as 0.35 mM (glucose) and 0.08 mM (uric acid). To determine the clinical utility of the μPADs, chronoamperometry was used to analyze glucose and uric acid in real urine samples using the standard addition method. Our devices were able to detect the analytes of interest in complex real-world biological samples, and have the potential for use in a wide variety of applications.
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Affiliation(s)
- Yong Yao
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, China
| | - Chunsun Zhang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, China.
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7
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Borzenkov M, Määttänen A, Ihalainen P, Collini M, Cabrini E, Dacarro G, Pallavicini P, Chirico G. Photothermal effect of gold nanostar patterns inkjet-printed on coated paper substrates with different permeability. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:1480-1485. [PMID: 27826523 PMCID: PMC5082577 DOI: 10.3762/bjnano.7.140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 10/04/2016] [Indexed: 05/08/2023]
Abstract
Inkjet printing of spherical gold nanoparticles is widely applied in the fabrication of analytical and diagnostics tools. These methods could be extended to non-spherical gold nanoparticles that can efficiently release heat locally when irradiated in the near infrared (NIR) wavelength region, due to localized surface plasmon resonance (LSPR). However, this promising application requires the ability to maintain high efficiency and tunability of the NIR LSPR of the printed nanoparticles. In this study stable inks containing PEGylated gold nanostars (GNS) were fabricated and successfully inkjet-printed onto differently coated paper substrates with different porosity and permeability. A pronounced photothermal effect was observed under NIR excitation of LSPR of the printed GNS patterns even at low laser intensities. It was found that beside the direct role of the laser intensity, this effect depends appreciably on the printing parameters, such as drop density (δ, drops/mm2) and number of printed layers, and, critically, on the permeability of the coated paper substrates. These results will promote the development of GNS-based printed platforms for local photothermal therapy.
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Affiliation(s)
- Mykola Borzenkov
- Department of Physics “G. Occhialini”, Nanomedicine Center, University of Milano-Bicocca, piazza dell’Ateneo Nuovo, 20126, Milan, Italy
| | - Anni Määttänen
- Laboratory of Physical Chemistry, Center of Functional Materials, Åbo Academi University, Porthaninkatu 3-5, 20500, Turku, Finland
| | - Petri Ihalainen
- Laboratory of Physical Chemistry, Center of Functional Materials, Åbo Academi University, Porthaninkatu 3-5, 20500, Turku, Finland
| | - Maddalena Collini
- Department of Physics “G. Occhialini”, Nanomedicine Center, University of Milano-Bicocca, piazza dell’Ateneo Nuovo, 20126, Milan, Italy
| | - Elisa Cabrini
- Department of Chemistry, University of Pavia, viale Taramelli 12, 27100, Pavia, Italy
| | - Giacomo Dacarro
- Department of Chemistry, University of Pavia, viale Taramelli 12, 27100, Pavia, Italy
| | | | - Giuseppe Chirico
- Department of Physics “G. Occhialini”, Nanomedicine Center, University of Milano-Bicocca, piazza dell’Ateneo Nuovo, 20126, Milan, Italy
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Borzenkov M, Määttänen A, Ihalainen P, Collini M, Cabrini E, Dacarro G, Pallavicini P, Chirico G. Fabrication of Inkjet-Printed Gold Nanostar Patterns with Photothermal Properties on Paper Substrate. ACS APPLIED MATERIALS & INTERFACES 2016; 8:9909-16. [PMID: 27031124 DOI: 10.1021/acsami.6b02983] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Inkjet printing technology has brought significant advances in patterning various functional materials that can meet important challenges in personalized medical treatments. Indeed, patterning of photothermal active anisotropic gold nanoparticles is particularly promising for the development of low-cost tools for localized photothermal therapy. In the present work, stable inks containing PEGylated gold nanostars (GNSs) were prepared and inkjet printed on a pigment-coated paper substrate. A significant photothermal effect (ΔT ≅ 20 °C) of the printed patterns was observed under near infrared (NIR) excitation of the localized surface plasmon resonance (LSPR) of the GNS with low laser intensity (I ≅ 0.2 W/cm(2)). Besides the pronounced photothermal effect, we also demonstrated, as an additional valuable effect, the release of a model fluorescent thiol-terminated Bodipy dye (BDP-SH) from the printed gold surface, both under bulk heating and NIR irradiation. These preliminary results suggest the way of the development of a new class of low-cost, disposable, and smart devices for localized thermal treatments combined with temperature-triggered drug release.
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Affiliation(s)
- Mykola Borzenkov
- Department of Physics "G. Occhialini", Nanomedicine Center, University of Milano-Bicocca , piazza della Scienza 3, 20126 Milan, Italy
| | - Anni Määttänen
- Laboratory of Physical Chemistry, Center for Functional Materials, Åbo Akademi University , Porthaninkatu 3-5, 20500 Turku, Finland
| | - Petri Ihalainen
- Laboratory of Physical Chemistry, Center for Functional Materials, Åbo Akademi University , Porthaninkatu 3-5, 20500 Turku, Finland
| | - Maddalena Collini
- Department of Physics "G. Occhialini", Nanomedicine Center, University of Milano-Bicocca , piazza della Scienza 3, 20126 Milan, Italy
| | - Elisa Cabrini
- Department of Chemistry, University of Pavia , viale Taramelli 12, 27100 Pavia, Italy
| | - Giacomo Dacarro
- Department of Chemistry, University of Pavia , viale Taramelli 12, 27100 Pavia, Italy
| | | | - Giuseppe Chirico
- Department of Physics "G. Occhialini", Nanomedicine Center, University of Milano-Bicocca , piazza della Scienza 3, 20126 Milan, Italy
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Ihalainen P, Määttänen A, Sandler N. Printing technologies for biomolecule and cell-based applications. Int J Pharm 2015; 494:585-592. [DOI: 10.1016/j.ijpharm.2015.02.033] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 02/04/2015] [Accepted: 02/11/2015] [Indexed: 02/07/2023]
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10
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Juvonen H, Oja T, Määttänen A, Sarfraz J, Rosqvist E, Riihimäki TA, Toivakka M, Kulomaa M, Vuorela P, Fallarero A, Peltonen J, Ihalainen P. Protein and bacterial interactions with nanostructured polymer coatings. Colloids Surf B Biointerfaces 2015; 136:527-35. [PMID: 26454542 DOI: 10.1016/j.colsurfb.2015.09.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/25/2015] [Accepted: 09/28/2015] [Indexed: 01/26/2023]
Abstract
Adsorption of proteins and adhesion of bacteria to a surface is affected by chemical and physical interactions. In this study, polymer coatings and their ability to adsorb avidin and Staphylococcus aureus were investigated. The surface chemistry and topography of the polymer coatings was modified by changing the weight ratio of the hydrophobic polystyrene (PS) and the hydrophilic acrylonitrile butadiene styrene (ABS) components in the polymer blend. Avidin adsorbed less to the ABS phase compared with the PS phase. The side-on orientation of avidin on the ABS surface, however, resulted in a higher specific binding of biotinylated bovine serum albumin. Steric effects and hydrophobic protein-surface interactions decreased the activity of avidin on the PS phase. The increased hydrophobicity and roughness of the polymer coatings enhanced the adhesion of S. aureus. The avidin-coated latex surface with 55% relative surface coverage of the PS phase showed anti-microbial behavior.
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Affiliation(s)
- Helka Juvonen
- Centre for Functional Materials, Laboratory of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3, FI-20500 Turku, Finland.
| | - Terhi Oja
- Faculty of Science and Engineering, Pharmaceutical Sciences Laboratory, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland
| | - Anni Määttänen
- Centre for Functional Materials, Laboratory of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3, FI-20500 Turku, Finland
| | - Jawad Sarfraz
- Centre for Functional Materials, Laboratory of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3, FI-20500 Turku, Finland
| | - Emil Rosqvist
- Centre for Functional Materials, Laboratory of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3, FI-20500 Turku, Finland
| | - Tiina A Riihimäki
- BioMediTech, Molecular Biotechnology, FI-33014, University of Tampere, Finland
| | - Martti Toivakka
- Centre for Functional Materials, Laboratory of Paper Coating and Converting, Åbo Akademi University, Porthaninkatu 3, FI-20500 Turku, Finland
| | - Markku Kulomaa
- BioMediTech, Molecular Biotechnology, FI-33014, University of Tampere, Finland
| | - Pia Vuorela
- Faculty of Pharmacy, Division of Pharmaceutical Biosciences, Pharmaceutical Biology, FI-00014, University of Helsinki, Finland
| | - Adyary Fallarero
- Faculty of Science and Engineering, Pharmaceutical Sciences Laboratory, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland; Faculty of Pharmacy, Division of Pharmaceutical Biosciences, Pharmaceutical Biology, FI-00014, University of Helsinki, Finland
| | - Jouko Peltonen
- Centre for Functional Materials, Laboratory of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3, FI-20500 Turku, Finland
| | - Petri Ihalainen
- Centre for Functional Materials, Laboratory of Physical Chemistry, Åbo Akademi University, Porthaninkatu 3, FI-20500 Turku, Finland
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