Article
Materials Science, Multidisciplinary
Jin Woo Jang, Young Eun Kim, Oh Hyeon Kwon, Ji Yeon Kim, Wenhu Shen, Yuri Kim, Suk-Young Yoon, Heesun Yang, Yong Soo Cho
Summary: A novel approach using a phosphor-layered composite containing red and green halide nanocrystals for competitive white luminescence devices is proposed in this study. It was found that adjusting the prismatic pattern of the red halide layer could effectively enhance the emission of white luminescence.
MATERIALS & DESIGN
(2022)
Article
Polymer Science
Siti Khairunisah Ghazali, Nadia Adrus, Rohah A. Majid, Fathilah Ali, Jamarosliza Jamaluddin
Summary: This study utilized UV-LED technology to design a series of hydrophobic coatings based on urethane acrylate oligomer and fluorinated monomer, achieving high C=C conversion and gel fraction, reducing surface free energy, and enhancing hydrophobicity through migration of fluorine component. However, excessive fluorinated monomer content can lead to decreased transparency of the coating.
Article
Engineering, Manufacturing
Won-Bin Lim, Ji-Hong Bae, Min-Ji Seo, Jin-Gyu Min, Ju-Hong Lee, Young-Suk Jung, PilHo Huh
Summary: An acryl-functionalized urethane prepolymer series was synthesized and a novel acryl-urethane resin was designed for DLP 3D printing. The combination of photo-initiators and additives resulted in excellent printing performance and surface properties. This UV-curable AU resin holds promise for biocompatible and photo-curable applications.
ADDITIVE MANUFACTURING
(2022)
Article
Chemistry, Applied
Hongjian Zhang, Chengliang Zhou, Jie Peng, Bo Chen, Xinyu Pan, Wentao Xiong, Xiaoping Zhang, Zhizheng Xu, Xiaohu Luo, Yali Liu
Summary: A novel UV-curable transparent anti-smudge coating with adjustable wetting properties has been prepared, showing strong repellency to water and oil-borne contaminants. The coating can be applied to a variety of substrates due to the advantages of non-thermal and rapid UV-curing strategy.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Biochemistry & Molecular Biology
Abdelrahman Barakat, Elbadawy A. Kamoun, Shahira H. EL-Moslamy, M. B. Ghazy, Alaa Fahmy
Summary: In this study, carboxymethylcellulose (CMC) functionalized with glycidyl methacrylate (GMA) was successfully synthesized, and cellulose nanocrystals (CNCs) from sugarcane were graft-copolymerized with GMA to enhance their physicochemical and biological characteristics. The addition of CNCs-g-GMA nanofillers increased the thermal stability of the prepared hydrogel and showed antimicrobial activity against multidrug resistance pathogens. Therefore, CMC-g-GMA filled with CNCs-g-GMA composite hydrogel could be used as compatible biomaterials for versatile biomedical applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Chemistry, Applied
Ingrid Calvez, Sorour Davoudi, Caroline R. Szczepanski, Veronic Landry
Summary: UV-curable coatings have advantages such as low environmental impact and increased production rates, but achieving an optimal combination of high mechanical performance and low-gloss aesthetics remains a challenge.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Limnology
Oscar Sepulveda Steiner, Damien Bouffard, Alfred Wuest
Summary: This study found that Chromatium okenii can continue their vertical migration at night, driving dark bioconvection and maintaining the subsurface mixed bacterial layer in Lake Cadagno.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Materials Science, Ceramics
Dongyu Wang, Ting Chen, Yong Zeng, Xianfu Chen, Weihong Xing, Yiqun Fan, Xu Qiao
Summary: In this study, ceramic microfiltration membranes with tertiary gradient structures were prepared using a combination of 3D printing and dip-coating technology. The membranes exhibited high pure water permeance and good performance in the separation of nanoparticles from water suspensions.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Shuyuan Zhang, Li Wang, Yu Luo, Keke Wang, Yingtao Li, Xueming Feng, Yuechen Pei, Zhaofa Zhang, Bingheng Lu
Summary: Development of graphene-based materials with good light-curing ability and excellent electrical conductivity is key for next-generation electronic devices. By modifying the molecular structure of photocurable graphene oxide, complex-shaped structures and thin films can be obtained, with the resulting material exhibiting properties similar to graphene after thermal reduction. This material shows great potential for various electronic applications, including circuits and detection electrodes.
Review
Chemistry, Applied
Lucas Dall Agnol, Fernanda Trindade Gonzalez Dias, Heitor Luiz Ornaghi Jr, Marco Sangermano, Otavio Bianchi
Summary: UV-WPU, as an environmentally friendly alternative material with good properties, has been developed with various formulations over the years. However, there is currently no valuable review on the significant influencing factors in UV-WPU manufacture. This study aims to answer specific questions about the state of UV-WPU materials and provide new combinations of raw materials and solutions.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Baekseo Choi, Geun Yeong Choe, Yoon Soo Han
Summary: UV-curable resins based on epoxy acrylate were prepared and investigated for their physical properties. By adding a crosslinker and reinforcement, the photosensitivity and hardness were improved, while the solubility in various organic solvents was also studied.
Article
Chemistry, Applied
Wanjing Liu, Pan Tian, Yisen Huang, Junhua Zhang
Summary: In this paper, a new UV-light-sensitive solid resist resin with high glass transition temperature, high double-bond conversion and low dielectric constant was successfully synthesized by using cholic acid to react with epoxy resin. It shows promising application potential for light-curing inks in high-frequency electronic packaging.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Mechanics
Alexandra VanDine, Hieu T. Pham, Sutanu Sarkar
Summary: Direct numerical simulations were conducted to investigate a stratified shear layer at high Reynolds number, with variations in Richardson number. The study found that at low Richardson numbers, there is a period of thickness contraction in the shear layer during transition to turbulence, and mixing efficiency in the turbulent regime is higher compared to a two-layer density profile.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Chemistry, Applied
Phanthanyaphon Tsupphayakorn-aek, Anutida Suwan, Tulyapong Tulyapitak, Nitinart Saetung, Anuwat Saetung
Summary: A novel UV-curable waterborne polyurethane-acrylate (WPUA) was successfully prepared via sequential emulsion polymerization. The WPUA exhibited good stability, film formation and provided good wettability and thermal properties. The UV-cured WPUA films showed improved mechanical properties and water resistance.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Solene Pellerin, Fabienne Samyn, Sophie Duquesne, Veronic Landry
Summary: The application of flame retardant coatings is an effective solution to enhance the fire retardancy of wood flooring. This study found that the addition of a phosphorus-based monomer improved the adhesion and fire performance of the coatings without impacting photopolymerisation. However, the flame-retarded coatings displayed higher hygroscopy.
Article
Polymer Science
Ferenc Horkay, Jack F. Douglas, Srinivasa R. Raghavan
Summary: Glycosaminoglycans play a crucial role in controlling the load-bearing and lubricating properties of cartilage and synovial fluid. Chondroitin sulfate solutions are viscous liquids, while hyaluronic acid solutions exhibit viscoelasticity and shear thinning. Aggrecan demonstrates weak gel-like rheology and forms a macroscopic network when complexed with hyaluronic acid, showing an aging evolution in rheological properties over time.
Article
Nanoscience & Nanotechnology
So Hyun Ahn, Medha Rath, Chen-Yu Tsao, William E. Bentley, Srinivasa R. Raghavan
Summary: Microgels of biopolymers such as alginate are commonly used for cell encapsulation. By enveloping alginate gels with a thin shell of a covalently cross-linked gel, the microcapsules become more robust and stable under various conditions, enabling long-term viability and functionality of encapsulated cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Multidisciplinary Sciences
Leah K. Borden, Ankit Gargava, Srinivasa R. Raghavan
Summary: The study demonstrated strong adhesion of cationic hydrogels to bovine tissues under a DC electric field, showcasing the potential use of electroadhesion in sealing tissue cuts without the need for sutures. This approach could simplify surgeries by allowing adhesion on-command and reversible adhesion in case of error.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Kerry C. DeMella, Sai Nikhil Subraveti, Karima J. Perry, Shashi P. Karna, Srinivasa R. Raghavan
Summary: This paper presents a platform of polymer capsules that can synthesize products on-demand. The capsules are multicompartment structures that can transport solutes and trigger reactions using a thermal switch. The platform was used to synthesize fluorescent nanoclusters and demonstrate the autonomous response of the capsules.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Sairam Ganesh, Sai Nikhil Subraveti, Srinivasa R. Raghavan
Summary: This study investigates the protective effects of flexible hydrogels when wrapped around fragile objects, and finds that the addition of starch granules greatly enhances the protective abilities of the hydrogels, reducing impact force and coefficient of restitution.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Hema Choudhary, Srinivasa R. Raghavan
Summary: In this study, a superabsorbent polymer gel with high porosity and rapid expansion capability was successfully created. The gel was formed through foaming a monomer solution and polymerizing it to obtain a porous solid. The gel exhibited remarkable water absorption and rapid expansion, which could be observed visually. The swollen gel was also robust enough to be handled.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Igor Kevin Mkam Tsengam, Marzhana Omarova, Elizabeth G. Kelley, Alon McCormick, Geoffrey D. Bothun, Srinivasa R. Raghavan, Vijay T. John
Summary: This paper investigates the nanostructures formed by the combination of the phospholipid lecithin and the nonionic surfactant Tween 80. The study reveals the formation of disc-like bicelles and cylindrical micelles at specific L/T ratios. The findings suggest that lecithin lipids make up the body of the discs, while Tween 80 surfactants occupy the rims. The research provides insights into the morphological changes in the lecithin-Tween 80 system.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Multidisciplinary
Ankit Gargava, Wenhao Xu, Srinivasa R. Raghavan
Summary: Electroresponsive capsules made from nonconducting biopolymers exhibit electrical responses when subjected to an electric field, deforming and bursting to release drugs or solutes. This research has significant implications for wearable electronics and other applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
So Hyun Ahn, Amy J. Karlsson, William E. Bentley, Srinivasa R. Raghavan
Summary: In this study, 'artificial cells' with an architecture mimicking that of eukaryotic cells were created using common biopolymers. The cells were encapsulated in multi-compartment capsules and were used to observe the comparative growth of microbial cells from different kingdoms. The capsules also mimicked the 3-D environment cells naturally encounter during growth. The study showed that small molecules can permeate through the capsule walls and affect cell growth, and that bacteria can induce a morphological switch in adjacent fungal cells through signaling molecules.
Article
Nanoscience & Nanotechnology
Leah K. Borden, Ankit Gargava, Uma J. Kokilepersaud, Srinivasa R. Raghavan
Summary: Electroadhesion is used to connect soft materials into 3D structures without adhesive, using low voltage and reversible adhesion. It can also be used for selective separation of charged soft matter.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Medha Rath, Allison Fear, Taylor J. Woehl, Srinivasa R. Raghavan
Summary: For the first time, pearlescence is demonstrated in soft millimeter-scale capsules that contain no plate-like particles. The capsules have a thin outer shell and exhibit pearlescence when heated above a certain temperature. This study provides new insights into the nature of pearlescence and how it can be manipulated in various soft materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Shakiba Nikfarjam, Rebecca Gibbons, Faraz Burni, Srinivasa R. Raghavan, Mikhail A. Anisimov, Taylor J. Woehl
Summary: Cells can assemble dynamic protein-based nanostructures through dissipative assembly. In this study, we demonstrated the dissipative cross-linking of transient protein hydrogels using a redox cycle, which exhibited protein unfolding-dependent lifetimes and mechanical properties. The results indicate that the protein secondary structure mediated the transient hydrogel's lifetime and mechanical properties by mediating the redox reactions.
Article
Chemistry, Multidisciplinary
So Hyun Ahn, Leah K. Borden, William E. Bentley, Srinivasa R. Raghavan
Summary: Researchers have developed multicompartment capsules (MCCs) with chemically unique inner compartments that respond selectively to different stimuli. By altering the crosslinking agent of the biopolymer alginate, specific compartments in the MCC could be degraded in the presence of enzymes, hydrogen peroxide, or UV light. This study advances the concept of MCCs as a platform to mimic cellular architecture and behavior.
Article
Materials Science, Multidisciplinary
Hema Choudhary, Christine Zhou, Srinivasa R. Raghavan
Summary: In this study, gel sheets that combine the advantages of foldable cloth/paper towels and highly absorbent polymer hydrogels were created. The gel sheets are macroporous, flexible, soft, and robust, and can absorb and retain liquid like hydrogels. They can be used for cleaning up spills and absorbing various fluids in homes, labs, hospitals, and surgeries.
Article
Chemistry, Physical
Brady C. Zarket, Hanchu Wang, Sai N. Subraveti, Srinivasa R. Raghavan
Summary: This article introduces a method for synthesizing responsive multilayer tubes in the laboratory without the need for complex equipment such as a 3D printer. Each layer of the tubes is composed of a polymer gel formed by free-radical polymerization, allowing for precise control over the tube’s structure. The tubes exhibit properties of being robust, flexible, and capable of changing shape in response to external stimuli.
