- Advanced Sensor and Energy Harvesting Materials
- Nanofabrication and Lithography Techniques
- Adhesion, Friction, and Surface Interactions
- Polymer Surface Interaction Studies
- Bone Tissue Engineering Materials
- Bacterial biofilms and quorum sensing
- Advancements in Photolithography Techniques
- Microfluidic and Capillary Electrophoresis Applications
- Antimicrobial agents and applications
- Surface Modification and Superhydrophobicity
- Graphene and Nanomaterials Applications
- Nanoplatforms for cancer theranostics
- 3D Printing in Biomedical Research
- Electrospun Nanofibers in Biomedical Applications
- Tissue Engineering and Regenerative Medicine
- Nanomaterials and Printing Technologies
- Tribology and Wear Analysis
- Marine Biology and Environmental Chemistry
- Tactile and Sensory Interactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Orthopaedic implants and arthroplasty
- Microfluidic and Bio-sensing Technologies
- Microbial Fuel Cells and Bioremediation
- Fluid Dynamics and Heat Transfer
- Cardiac and Coronary Surgery Techniques
Wonkwang University
2021-2025
Jeonbuk Development Institute
2021
Government of the Republic of Korea
2021
Ulsan National Institute of Science and Technology
2017-2020
Korea Institute of Machinery and Materials
2012-2014
Chungnam National University
2010
Vertically aligned nanomaterials, such as nanowires and nanoneedles, hold strong potential efficient platforms onto which living cells or tissues can be interfaced for use in advanced biomedical applications. However, their rigid mechanical properties complex fabrication processes hinder integration flexible, tissue-adaptable, large-area patch-type scaffolds, limiting practical In this study, we present a highly flexible patch that possesses spiky hydrogel nanostructure array transplantable...
Abstract Low‐dimensional nanomaterials are widely adopted as active sensing elements for electronic skins. When the integrated with microscale architectures, performance of skin is significantly altered. Here, it shown that a high‐performance flexible and stretchable can be produced by incorporating piezoresistive carbon nanotube composite into hierarchical topography micropillar–wrinkle hybrid architectures mimic wrinkles folds in human skin. Owing to unique exhibits versatile superior...
Staphylococcus aureus (S. aureus) is a common bacterium that can cause wide range of infections in humans. The growth these bacteria inhibited by strategies using antibiotics and/or nanomaterials. However, nanomaterials and cytotoxicity antibiotic resistance. Recent research has focused on achieving mechanical inhibition bacterial through the surface nanostructure. Antibacterial use nanostructured surfaces does not need antibiotics. Meanwhile, transparent films are necessary medical,...
Despite extensive efforts toward developing antibiofilm materials, efficient prevention of biofilm formation remains challenging. Approaches based on a single strategy using either bactericidal material, antifouling coatings, or nanopatterning have shown limited performance in the formation. This study presents hybrid lipid-hydrogel-nanotopography for development highly and durable biofilm-resistant material. The material consists nanostructured antifouling, biocompatible polyethylene...
Bone tissue engineering aims to develop biomaterials that are capable of effectively repairing and regenerating damaged bone tissue. Among the various polymers used in this field, polycaprolactone (PCL) is one most widely utilized. As a biocompatible polymer, PCL easy fabricate, cost-effective, offers consistent quality control, making it popular choice for biomedical applications. However, lacks inherent antibacterial properties, susceptible bacterial adhesion biofilm formation, which can...
This study presents wet-responsive, shape-reconfigurable, and flexible hydrogel adhesives that exhibit strong adhesion under wet environments based on reversible interlocking between reconfigurable microhook arrays. The experimental investigation the swelling behavior structural characterization of microstructures reveal arrays undergo anisotropic shape transformation upon contact with water. interlocked is greatly enhanced conditions because hydration-triggered reconfiguration...
Abstract Flexible, transparent, conductive electrodes are key elements of emerging flexible electronic and energy devices. Such should form an intimate physical contact with various active components devices to ensure stable, low‐resistant electrical contacts. However, formation techniques based largely on conventional soldering, pastes, mechanical clamping, thin film deposition. These generally result in damaged, contaminated, bulky, uncontrollable interfaces. A self‐attachable, flexible,...
Over the past few decades, extensive research efforts have been devoted to developing surfaces with unique functionalities, such as controlled wettability, antibiofouling, antifogging, and anti-icing behavior, for applications in a wide range of fields, including biomedical devices, optical instruments, microfluidics, energy conservation harvesting. However, many previously reported approaches limitations regard eco-friendliness, multifunctionality, long-term stability efficacy, cost...
In the use of medical devices, it is essential to prevent attachment bacteria device surface or kill attached bacteria. To bacteria, many researchers have used antibiotics studied nanostructure-based antibacterial surfaces, which rely on mechanical methods. Several polymers are widely for fabrication, one polycaprolactone (PCL). PCL biocompatible, biodegradable, easy fabricate using 3D printing, relatively inexpensive and its quality easily controlled; therefore, there various approaches in...
To date, several off-the-shelf products such as artificial blood vessel grafts have been reported and clinically tested for small diameter (SDV) replacement. However, conventional lack endothelium and, thus, are not ideal SDV transplantation they can cause thrombosis. In addition, a successful graft must sufficient mechanical properties to withstand various external stresses. Here, we developed spontaneous cellular assembly (S-SDV) that develops without additional intervention. By improving...
The eggshell membrane (ESM) is usually regarded as an agricultural byproduct waste, even though it has unique properties a biomaterial. In particular, the ESM flexible and highly pure microfibrous network structure that can be used artificial extracellular matrix (ECM) platform for engraftment or tissue-engineered scaffold. this study, functional scaffolds were constructed using graphene, their applicability stem cell tissue engineering was analyzed. graphene-layered (GEM) show enhanced...
Undulatory topographical waves of bioinspired dynamic surfaces effectively prevent surface fouling.
We have developed a transparent, non-sticky silicate nano mold with high mechanical strength and excellent releasing properties through simple phase conversion process of polyvinylsilazane (PVSZ) replica mold. This inexpensive inorganic polymer derived does not require extra surface modification could be used as an ideal low adhesion force for nanoimprint lithographic applications. The hard allows fabrication sub-100 nm patterns down to 30 nm. can both UV thermal NIL duplication processes in...
In this paper, we explore the development of a multi-functional surface designed to tackle challenges posed by
Diverse physical interlocking devices have recently been developed based on one-dimensional (1D), high-aspect-ratio inorganic and organic nanomaterials. Although these 1D nanomaterial-based can provide reliable repeatable shear adhesion, their adhesion in the normal direction is typically very weak. In addition, high-aspect-ratio, slender structures are mechanically less durable. this study, we demonstrate a highly flexible robust system that exhibits strong reversible between...
Antibacterial surfaces are one of the most important in medical and marine industries. Many researchers studying antibacterial to kill bacteria or prevent adhesions. Various materials structures applied surface inhibit adhesion adhered bacteria. Nowadays, a dual strategy is preferred rather than single strategy. In this study, nanopillar were fabricated using polyethylene glycol dimethacrylate (PEGDMA), which has an antifouling effect. Afterward, nanostructured PEGDMA was assessed confirm...
A tubular fluidic device with dynamic inner walls significantly reduces the biofouling of lab-on-a-chip systems.