Article
Chemistry, Physical
Marjolein de Jager, Joris de Jong, Laura Filion
Summary: Computer simulations were used to study point defects in systems of soft colloidal particles, determining that the nature of lattice distortion is mainly determined by crystal structure. One-dimensional lattice distortions depend on dimensionality, with interstitial concentrations in BCC crystals reaching up to 1%.
Article
Multidisciplinary Sciences
Dengping Lyu, Wei Xu, Nansen Zhou, Wendi Duan, Zhisheng Wang, Yijiang Mu, Renjie Zhou, Yufeng Wang
Summary: Soft-and-hard hybrid structures have been challenging to realize at microscale due to material integration and actuation difficulties. In this research, microscale superstructures consisting of soft and hard materials were created through simple colloidal assembly. The resulting structures, referred to as MicroSpine, demonstrated thermoresponsive shape-transforming properties and served as microactuators. By solidifying the liquid parts within the chains with prescribed patterns, various chain morphologies were designed to achieve controlled actuating behaviors. The chains were further used to construct colloidal capsules for temperature-programmed encapsulation and release of guests.
Article
Physics, Applied
Minh Triet Dang, Luka Gartner, Peter Schall, Edan Lerner
Summary: This paper proposes a novel method to estimate the free energy of colloidal glasses using particle coordinates from confocal microscopy snapshots. The effectiveness of this method is confirmed by comparing the results with those obtained by thermodynamic integration. The study also highlights the importance of particle free volume when measuring the free energy of slightly polydisperse colloidal glasses.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Biophysics
Fangjie Li, Yuning Luo, Xiaoyi Feng, Yuqiong Guo, Yue Zhou, Dongxiu He, Zhizhong Xie, Haitao Zhang, Yang Liu
Summary: This article provides a systematic overview of the development, preparation, and applications of 2D colloidal crystals of soft microgel spheres. Various preparation methods and representative biomedical applications are introduced, showcasing the high performance of these crystals in optical sensing, drug delivery, antibacterial coatings, cell culture, and colloidal templates.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Physics, Fluids & Plasmas
Leticia Lopez Flores, Jose Manuel Olais-Govea, Martin Chavez-Paez, Magdaleno Medina-Noyola
Summary: The research demonstrates through molecular and Brownian dynamics simulations the similarity in dynamics between the Lennard-Jones liquid and the hard-sphere system, establishing its extent of mapping within the hard-sphere dynamic universality class.
Review
Chemistry, Multidisciplinary
Irina Negut, Carmen Ristoscu
Summary: Bioactive glasses have been developed into various items for treating medical problems. They are not only used in healing hard tissues but also gaining popularity in soft tissue healing. They accelerate skin regeneration and have positive effects on wound healing stages. They can adhere to hard tissues and aid in their regeneration by forming a calcium-phosphate-like layer.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Physical
M. N. Liu, Q. Hao, J. Dong, B. A. Sun, S. D. Feng, D. Crespo, J. C. Qiao
Summary: It was found that the beta relaxation becomes more pronounced with the increase of copper in binary metallic glasses. However, the beta relaxation of CuZr or CuTi binary metallic glasses is much more modest compared to other metallic glasses.
Article
Chemistry, Physical
D. S. Yang, J. Wang, J. M. Pelletier, K. K. Song, J. C. Qiao
Summary: Dynamic mechanical relaxation processes are essential in understanding the physical and mechanical properties of metallic glasses. The behavior of different metallic glass systems varies, with physical aging affecting the intensity of beta relaxation. This research provides new insights into the correlation between structural heterogeneity and beta relaxation in metallic glasses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
Yiming Xia, Xiunan Yang, Junchao Huang, Rui Liu, Ning Xu, Mingcheng Yang, Ke Chen
Summary: We constructed structural order parameters based on local angular and radial distribution functions in dense colloidal suspensions and found significant correlations between these parameters and local dynamics. In particular, the correlation between local orientational order and dynamical heterogeneity was consistently higher than the correlation between conventional two-body structural entropy and local dynamics. The structure-dynamics correlations can be explained by an excitation model where the energy barrier depends on local structural order. Our results suggest that in dense disordered packings, local orientational order is higher than translational order and plays a more important role in determining the dynamics in glassy systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Multidisciplinary Sciences
Qi Zhang, Wei Li, Kaiyao Qiao, Yilong Han
Summary: The nature of liquid-to-glass transition and glass-to-liquid transition is investigated in this study, especially focusing on the surface effects. Colloidal glasses are assembled by vapor deposition and melted by adjusting particle attractions. The results show the presence of a surface liquid layer and an intermediate glassy layer, and similar melting behaviors to crystal premelting and melting. Single-particle kinetics measurements confirm theoretical predictions for the glass surface layer.
Article
Engineering, Mechanical
K. Tao, J. C. Qiao, L. Zhang, J. M. Pelletier
Summary: The introduction of Dy element in metallic glasses increases atomic mobility and structural heterogeneity, impacting the dynamic relaxation behavior and mechanical properties. Time-temperature superposition principle, Kohlrausch-Williams-Watts (KWW) function, and quasi-point defects (QPD) theory were used to describe the behavior of metallic glasses. These investigations demonstrate the importance of structure heterogeneity in tailoring the properties of metallic glasses.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Materials Science, Ceramics
Y. T. Cheng, Q. Hao, J. C. Qiao, D. Crespo, E. Pineda, J. M. Pelletier
Summary: The dynamic mechanical behavior and physical aging of Zr50-xCu34Ag8Al8Pdx (x = 0 and 2) bulk metallic glasses were studied in this research. The addition of Pd was found to slightly increase the dynamic inhomogeneity and reduce the defect concentration, ultimately affecting the relaxation time. The analysis also showed that the shape of the relaxation time distribution was not significantly altered.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Kazim K. Moncal, Hemanth Gudapati, Kevin P. Godzik, Dong N. Heo, Youngnam Kang, Elias Rizk, Dino J. Ravnic, Hwabok Wee, David F. Pepley, Veli Ozbolat, Gregory S. Lewis, Jason Z. Moore, Ryan R. Driskell, Thomas D. Samson, Ibrahim T. Ozbolat
Summary: The study demonstrates the intra-operative bioprinting of various craniomaxillofacial tissues directly on rats, including bone, skin, and composite tissues. A novel osteogenic hard tissue ink and droplet-based bioprinting technology facilitated substantial bone regeneration and accelerated wound closure in a stratified arrangement. The use of a hybrid approach resulted in significant skin wound closure and bone coverage, showcasing the potential for bioprinting technologies in clinical CMF defect reconstruction.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Ceramics
H. Jalili, B. Aslibeiki, A. Hajalilou, O. Musalu, L. P. Ferreira, M. M. Cruz
Summary: Recent studies have demonstrated the importance of the chemical composition and shape of magnetic nanoparticles in determining their properties. In this study, we synthesized cube-like nanoparticles and bimagnetic nanocomposites using an eco-friendly co-precipitation method. The nanocomposites exhibited good exchange-coupling interaction between the hard and soft magnetic phases, resulting in enhanced saturation magnetization. These materials showed promise for use in magnetic hyperthermia.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Zhencai Xing, Huadong Yong
Summary: This study focuses on the dynamic response of hard-magnetic soft materials under different force and applied magnetic fields, showing that the aspect ratio has an influence on the frequency and amplitude of the primary resonance. The application of PID controller effectively eliminates undesired vibration responses and achieves desired results.
INTERNATIONAL JOURNAL OF SMART AND NANO MATERIALS
(2021)
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.
