Article
Nanoscience & Nanotechnology
Jack Dawson, Samual Coaster, Rui Han, Johannes Gausden, Hongzhong Liu, Glen McHale, Jinju Chen
Summary: This study investigates the dynamics of droplets impacting three hydrophobic slippery surfaces and finds that the impact regime strongly depends on the surface properties. The findings provide insights for selecting surface properties to achieve desirable droplet impact characteristics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Zhentao Hao, Weihua Li
Summary: The nepenthes-inspired lubricant-infused surface (LIS) is a novel repellent surface with self-healing, self-cleaning, pressure stability, and ultra-slippery properties, and has shown great promise in microfluidics. Recent developments have focused on droplet manipulation on LIS with different mechanisms induced by various external stimuli, such as thermal, light, electric, magnetic, and mechanical force. The properties of the droplet, lubricant, and substrate on LIS determine the droplet condition, and droplet manipulation can be achieved through altering slipperiness, electrostatic force, and wettability. Applications in various fields, including microreactors and microfluidics, have also been discussed.
Article
Biochemical Research Methods
Weijian Liu, Xiao Luo, Changhao Chen, Guochen Jiang, Xinyu Hu, Hongjun Zhang, Minlin Zhong
Summary: The paper introduces a directional anchoring liquid-infused superamphiphobic surface (DAS) that achieves the largest sliding angle difference in a one-dimensional direction using an artificial surface, allowing for high-throughput droplet manipulation without cross-contamination. The DAS features excellent stability and functionality for handling corrosive droplets, making it a promising candidate for practical applications in various fields.
Article
Engineering, Environmental
Zhixiang Chen, Yi Lu, Rui Li, Rojas J. Orlando, Rogerio Manica, Qingxia Liu
Summary: By integrating slippery lubricant-infused porous surfaces (SLIPS) with triboelectric nanogenerators (TENG), the newly developed SLIPS-SE-TENG shows effective operation under extreme temperature and humidity, addressing the limitations of TENG fabricated with traditional superhydrophobic surfaces and enabling stable performance in harsh environments.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Manufacturing
Hamza Shams, Kanza Basit, Muhammad Ali Khan, Asif Mansoor, Sajid Saleem
Summary: Surface wettability can be altered by liquid-infused surfaces (LIS) and slippery liquid-infused porous surfaces (SLIPS), by creating a new interfacial surface with repellent properties towards both polar and non-polar liquids. A two-step method is presented to transform 3D printable polymeric materials into robust SLIPS. SLIPS exhibit low rolling angles and high resistance to mechanical abrasion.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Physical
Dohyung Kim, Minki Lee, Jeong-Hyun Kim, Jinkee Lee
Summary: The study found that the dynamic contact angles on LIS are sensitive to changes in both the lubricant viscosity and the capillary number, and the cube of the dynamic contact angles is proportional to theta(3)(D), following a conventional hydrodynamic theory. The decreasing lubricant viscosity shifted the cube of the dynamic contact angles to high capillary numbers, and the dynamic contact angle data coincided with the prediction from a scaling law derived in this study.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Coatings & Films
Yingkang Shi, Guotao Zhang, Baohong Tong, Yunlong Jiao, Yanguo Yin, Kun Liu
Summary: This study establishes a numerical model to investigate the exudation and spreading of lubricant in micropores under the stimulation of an external temperature field. The morphological evolution of the meniscus and the distribution characteristics of internal pressure during the exudation process are studied. The influence mechanism of thermal effect on the formation of lubricating film on porous surfaces is revealed.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Energy & Fuels
Guotao Zhang, Weijie Cai, Yingkang Shi, Deyu Tu, Baohong Tong
Summary: Droplets coalescence is a crucial step in the self-repair process of SLIPS. A numerical model was established to investigate the coalescence behavior and mechanism of microdroplets on SLIPS. The results showed the formation of a concave liquid bridge and negative pressure during droplets coalescence. The presence of vortex rings on the liquid bridge promoted droplet coalescence.
Article
Chemistry, Analytical
Xiaodong He, Jianfeng Zhang, Bo Yang, Xiaoping Zhang, Youquan Deng
Summary: This paper demonstrated the 3D manipulation of droplets between parallel liquid-infused membrane plates with patterned electrodes by controlling electrical DC signals. The study revealed the asymmetrical electrowetting behaviors of droplets between the plates and analyzed the vertical transport of deionized water droplets with electrostatic force. Experimental results showed that droplets moved faster with higher applied voltage but excessive voltage could lead to irregular droplet behavior. The research provides insights for high-throughput analysis and integrated devices on digital microfluidic chips.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Yang Xu, Yuxing Yao, Weichen Deng, Jen-Chun Fang, Robert L. Dupont, Meng Zhang, Simon Copar, Uros Tkalec, Xiaoguang Wang
Summary: The effect of magnetic field on the wettability and mobility of droplets on structured fluids is not well understood. This study manipulates the behaviors of water droplets on a film of thermotropic liquid crystals and finds that the static wetting behavior and static friction depend on the liquid crystal mesophases, while a magnetic field has no measurable effect on these properties. However, the droplet dynamics can be affected by a magnetic field on a particular liquid crystal film and this is dependent on the direction and strength of the magnetic field. The study also proposes a scaling argument using the magnetic coherence length to interpret the results.
Article
Biochemistry & Molecular Biology
Asma Abdulkareem, Aya E. Abusrafa, Sifani Zavahir, Salma Habib, Patrik Sobolciak, Marian Lehocky, Hana Pistekova, Petr Humpolicek, Anton Popelka
Summary: Hydrophobic fibrous slippery liquid-infused porous surfaces (SLIPS) can prevent biofilm formation and exhibit antibacterial activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Engineering, Biomedical
Xi Zeng, Zhiguang Guo, Weimin Liu
Summary: SLIPS, inspired by the Nepenthes pitcher plant, is highly versatile and can be combined with various surface characteristics. It has been proven suitable for many frontier fields and has potential applications in preventing pathogen contamination and blood adhesion, droplet manipulation, and directional transportation of liquids.
BIO-DESIGN AND MANUFACTURING
(2021)
Article
Nanoscience & Nanotechnology
Byeong Su Kang, Ji Seong Choi, Joon Hyung An, Seong Min Kang
Summary: This study proposes surfaces with nature-inspired hierarchical structures for directional droplet manipulation. A microline polydimethylsiloxane structure simulating a bamboo leaf was fabricated, with embedded silica particles creating hierarchical structures. The fabricated surface exhibits characteristics of both bamboo and lotus leaves, with controllable roll off through different roll-off angles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Coatings & Films
Guotao Zhang, Yingkang Shi, Baohong Tong, Yunlong Jiao, Yanguo Yin, Kun Liu
Summary: The self-repair function of slippery liquid-infused porous surfaces (SLIPS) plays a crucial role in maintaining the continuity and stability of lubricating film. This study established a numerical model to explore the exudation behavior of lubricant in micropores, revealing the flow mechanism of oil droplet spreading to oil film.
SURFACE & COATINGS TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Divyansh Tripathi, Prauteeto Ray, Ajay Vikram Singh, Vimal Kishore, Swarn Lata Singh
Summary: Slippery liquid-infused porous surfaces (SLIPS) are a unique approach to prevent fouling when in contact with aqueous media, organic fluids, or biological organisms. These surfaces consist of a liquid lubricant locked within the protrusions of a textured solid. Drops immiscible to the lubricant exhibit high mobility and low-contact-angle hysteresis on these surfaces. SLIPS have promising applications in anti-fouling surfaces, drag reduction, and fluid manipulation. However, lubricant depletion poses a challenge to the real-world application of SLIPS. This review focuses on enhancing the lubricant retention abilities of SLIPS and discusses the mechanisms responsible for lubricant depletion.
Article
Biophysics
Daniel P. Regan, Chloe Lilly, Abigail Weigang, Liza R. White, Emily J. LeClair, Alexander Collins, Caitlin Howell
Review
Biophysics
Jequil S. R. Hartz, Nuri W. Emanetoglu, Caitlin Howell, John F. Vetelino
Article
Multidisciplinary Sciences
Amber L. Boutiette, Cristoffer Toothaker, Bailey Corless, Chouaib Boukaftane, Caitlin Howell
Article
Nanoscience & Nanotechnology
Rushabh M. Shah, Aydin Cihanoglu, Justin Hardcastle, Caitlin Howell, Jessica D. Schiffman
Summary: Antifouling membranes with ultrathin oil layer were demonstrated in this study, offering stable operational lifetimes and long-lasting antifouling properties. The membranes showed stable permeance values and reduced microbial attachment, making them suitable for meeting the growing demand for clean water.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Food Science & Technology
SuriyaPrakaash LakshmiBalasubramaniam, Avinash Singh Patel, Balunkeswar Nayak, Caitlin Howell, Denise Skonberg
Summary: Cellulose nanofibers were chemically modified with phenolic acids to produce antioxidant and antimicrobial properties. Different esterifying agents were utilized, leading to varying effects on the fibers' structural properties, antioxidant activity, thermal stability, dispersibility, and antimicrobial activity. Results suggest that esterification with phenolic acids can enhance the functionality of CNF food additives, potentially prolonging the shelf life of foods.
Review
Green & Sustainable Science & Technology
Wenjing Sun, Mehdi Tajvidi, Christopher G. Hunt, Barbara J. W. Cole, Caitlin Howell, Douglas J. Gardner, Jinwu Wang
Summary: This review article summarizes the research and commercial applications of mycelium-based bio-composites. These materials can be produced by enzymatic or fungal treatment of lignocellulosic substrates, followed by hot-pressing into high-density panels. The article provides an overview of definitions, raw materials, processing procedures, material properties, and factors influencing product properties.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biology
Marissa Jeme Andersen, ChunKi Fong, Alyssa Ann La Bella, Jonathan Jesus Molina, Alex Molesan, Matthew M. Champion, Caitlin Howell, Ana L. Flores-Mireles
Summary: Microbial adhesion to medical devices, particularly urinary catheters, is a common issue in hospital-acquired infections. This study found that the deposition of host proteins, particularly fibrinogen, on urinary catheters provides an advantage for uropathogens in persisting despite antibiotic treatments. Targeting catheter protein deposition may be an effective intervention for reducing colonization and treating catheter-associated urinary tract infections (CAUTIs).
Article
Nanoscience & Nanotechnology
Daniel P. Regan, ChunKi Fong, Avery C. S. Bond, Claudia Desjardins, Justin Hardcastle, Shao-Hsiang Hung, Andrew P. Holmes, Jessica D. Schiffman, Melissa S. Maginnis, Caitlin Howell
Summary: The COVID-19 pandemic has highlighted the importance of detecting airborne pathogens. This study presents composite air filters with a bioinspired liquid coating that enhances the removal of captured aerosolized bacteria and viruses for further analysis. The results show that coating the polytetrafluoroethylene (PTFE) and high-efficiency particulate air (HEPA) filters with liquid improves the detection rate of pathogens, while liquid-coated HEPA filters also increase the total number of recovered cells. However, coating cellulose nanofiber mats (CNFMs) filters did not improve the release rate or total number of captured cells. These findings suggest that liquid-coated filters can improve air sampling efforts, enhancing biosurveillance and early warning of global pathogens.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Brandon Dixon, Chenxi Sui, Anna Briley, Po-Chun Hsu, Caitlin Howell
Summary: This study presents a nondestructive and continuous method for detecting signals from microorganisms at buried interfaces. Inspired by vascular systems in nature, the researchers created a system in which an inert carrier fluid could be introduced into an empty vascular network embedded in a polymer matrix. By analyzing the carrier fluid, they were able to detect signals from a surface layer of Escherichia coli and differentiate between different bacterial species. The study demonstrates the potential of using vascularized polymers for continuous, nondestructive detection of surface microorganisms.
ACS APPLIED BIO MATERIALS
(2023)
Editorial Material
Biophysics
Onur Apul, Caitlin Howell, M. Dilara Hatinoglu
Article
Nanoscience & Nanotechnology
Wenjing Sun, Mehdi Tajvidi, Christopher G. Hunt, Caitlin Howell
Summary: This study demonstrates a naturally occurring smart mycelium surface with tunable wettability. The mycelium foam exhibits natural hydrophobic and nonabsorbent properties, which can be adjusted under specific conditions.
ACS APPLIED BIO MATERIALS
(2021)
Article
Materials Science, Biomaterials
Kayla Marquis, Benjamin Chasse, Daniel P. Regan, Amber L. Boutiette, Andre Khalil, Caitlin Howell
ADVANCED BIOSYSTEMS
(2020)
