A5059573831- Advanced Sensor and Energy Harvesting Materials
- Hydrogels: synthesis, properties, applications
- Advanced Materials and Mechanics
- Adhesion, Friction, and Surface Interactions
- Polymer Surface Interaction Studies
- Conducting polymers and applications
- Surface Modification and Superhydrophobicity
- Electrospun Nanofibers in Biomedical Applications
- Material Properties and Processing
- Gut microbiota and health
- Microbial Community Ecology and Physiology
- Structural Analysis and Optimization
- Advanced Polymer Synthesis and Characterization
- Soft Robotics and Applications
- Concrete and Cement Materials Research
- Rheology and Fluid Dynamics Studies
- Prosthetics and Rehabilitation Robotics
- 3D Printing in Biomedical Research
- Nanocomposite Films for Food Packaging
- Environmental DNA in Biodiversity Studies
- Nanomaterials and Printing Technologies
- Magnesium Oxide Properties and Applications
- Luminescence and Fluorescent Materials
- Nanofabrication and Lithography Techniques
- Recycled Aggregate Concrete Performance
Massachusetts Institute of Technology
2020-2024
Lanzhou University
2020-2024
Worcester Polytechnic Institute
2024
Guangdong Technion-Israel Institute of Technology
2023-2024
Technion – Israel Institute of Technology
2023-2024
Shihezi University
2020-2024
Boston Children's Hospital
2020-2024
Xinjiang Production and Construction Corps
2024
Zhejiang University of Technology
2023
University of Science and Technology of China
2013-2022
Sticky even when wet Tissue adhesives are used as an alternative to stitches or staples and can be less damaging the healthy tissues. But they suffer from low biocompatibility poor matching of mechanical properties with Li et al. combined adhesive surface a flexible matrix develop that has right level stick but moves surrounding The is effective in presence blood thus might work during wound repair. Science , this issue p. 378
Abstract Adhering hydrogels to various materials is fundamental a large array of established and emerging applications. The last few years have seen transformative advances in achieving strong hydrogel adhesion, which supramolecular phenomenon. Two adherends connect through covalent bonds, noncovalent complexes, polymer chains, networks, or nanoparticles. Separating the dissipates energy cascading events across length scales, including bond cleavage, chain retraction, bulk hysteresis. A...
Achieving strong adhesion between wet materials (i.e., tissues and hydrogels) is challenging. Existing adhesives are weak, toxic, incompatible with soft surfaces, or restricted to specific functional groups from the materials. The approach reported here uses biocompatible polymer chains achieve retain softness, but requires no In response a trigger, form network, in topological entanglement two networks of materials, stitching them together like suture at molecular scale. To illustrate...
Hydrogels of superior mechanical behavior are under intense development for many applications. Some these hydrogels can recover their stress–stretch curves after loading cycles. These called self-recovery or even fatigue-free hydrogels. Such a hydrogel typically contains covalent polymer network, together with some noncovalent, reversible interactions. Here we show that still susceptible to fatigue fracture. We study containing both covalently cross-linked polyacrylamide and un-cross-linked...
Recent innovations highlight the integration of diverse materials with synthetic and biological hydrogels. Examples include brain-machine interfaces, tissue regeneration, soft ionic devices. Existing methods strong adhesion mostly focus on chemistry bonds mechanics dissipation but largely overlook molecular topology connection. Here, we significance by designing a specific bond-stitch topology. The achieves between preformed hydrogels various materials, where have no functional groups for...
Tough adhesion between wet materials (i.e., synthetic hydrogels and biological tissues) is undergoing intense development, but methods reported so far either require functional groups from the materials, involve toxic chemicals, or result in unstable adhesion. Here, we present a method to achieve biocompatible, covalent adhesion, without requiring any materials. We use two as model adherends that have polymer networks, no for an aqueous solution of biopolymers bioconjugate agents adhesive....
Noncovalent adhesion has long been developed for numerous applications, including pressure-sensitive adhesives, wound closure, and drug delivery. Recent advances highlight an urgent need: a general principle to guide the development of instant, tough, noncovalent adhesion. Here, we show that can be both instant tough by separately selecting two types bonds distinct functions: tougheners interlinks. We demonstrate using hydrogel with covalent polymer network tougheners, adhering another...
Thin, lightweight, and flexible textile pressure sensors with the ability to detect full range of faint (<100 Pa), low (≈KPa) high (≈MPa) are in significant demand meet requirements for applications daily activities more meaningfully some harsh environments, such as temperature pressure. However, it is still a challenge fulfill these simultaneously single sensor. Herein, high-performance sensor enabled by polyimide fiber fabric functionalized carbon-nanotube (PI/FCNT) obtained via facile...
New applications of hydrogels draw growing attention to the development tough hydrogels. Most are designed through incorporating large energy dissipation from breaking sacrificial bonds. However, these still fracture under prolonged cyclic loads with presence even small flaws. This paper presents a principle flaw-insensitive both static and loads. The design aligns polymer chains in hydrogel at molecular level deflect crack. To demonstrate this principle, polyacrylamide polyvinyl alcohol is...
The transplantation of engineered cells that secrete therapeutic proteins presents a promising method for addressing range chronic diseases. However, hydrogels used to encase and protect non-autologous from immune rejection often suffer poor mechanical properties, insufficient oxygenation, fibrotic encapsulation. Here, we introduce composite encapsulation system comprising an oxygen-permeable silicone cryogel skeleton, hydrogel matrix, fibrosis-resistant polymer coating. Cryogel skeletons...
Polymer fibers with specific chemical and mechanical properties are key components of many biomaterials used for regenerative medicine drug delivery. Here, we develop a bioinspired, low-energy process to produce mechanically tunable biopolymer drawn from aqueous solutions. Hyaluronic acid (HA) forms dynamic cross-links branched polyethylene glycol polymers end-functionalized boronic acids varied structure extensible polymer networks. This fiber precursor (DFP) is directly by pultrusion into...
A new versatile pneumatic actuator called a scissor-mechanism-based vacuum powered artificial muscle (SMVAM) is proposed in this letter. The composed of soft airtight skin and scissor structural skeleton, based on the types units can be designed into linear or curvilinear types. principal motion contraction process driven by negative pressure to generate large force considerable ratio, extension positive restoration actuator. design method for SMVAMs quasi-static model estimate blocked...
An elastic bilayer composed of a stiff film bonded to soft substrate forms wrinkles under compression. Experiments and finite element simulations reveal that at small thickness contrast, secondary bifurcations such as period doubling are delayed, providing access high aspect ratio wrinkles. For modulus the periodic can evolve into regular pattern ridges with even higher ratio.