Review
Chemistry, Multidisciplinary
Steven I. Rich, Zhi Jiang, Kenjiro Fukuda, Takao Someya
Summary: With the advancement of the Internet of Things and wearable computing, electronics have become increasingly essential in daily life. Traditional electronics, with their rigid angular nature, have faced challenges in integrating with curved surfaces. In recent years, efforts have been made to fabricate electronics on curved surfaces, showing the potential of curved electronics.
MATERIALS HORIZONS
(2021)
Article
Chemistry, Multidisciplinary
Divya Chopra, Karan Gulati, Saso Ivanovski
Summary: Anodization enables fabrication of controlled nanotopographies on Ti implants to offer tailorable bioactivity and local therapy. In this study, extensive optimization of various nanostructures on implant-relevant micro-rough Zr curved surfaces was reported, bringing this technology closer to clinical translation. Furthermore, exploration of sonication to reveal underlying nanotubes on nano-engineered Zr surfaces may enhance the bioactivity and therapeutic potential of conventional Zr-based implants.
Article
Physics, Applied
E. Ruiz-Gutierrez, P. J. Baker, A. M. J. Edwards, M. Newton, I. C. Sage, R. Ledesma-Aguilar, G. McHale, C. Brown
Summary: This study demonstrates the formation of thin, rectangular shaped films of electrically insulating liquid on curved and flexible liquid repellent substrates using dielectrophoresis forces. The experimental threshold voltage for film formation is found to have a monotonic dependence on the substrate curvature. By considering the balance of stresses acting on the films, the researchers develop an analytical theoretical expression that is in excellent quantitative agreement with the experimental measurements. The results and the demonstrated programmable wettability on curved and flexible substrates provide foundations for various applications such as imaging, displays, and biochemical analysis.
APPLIED PHYSICS LETTERS
(2022)
Article
Mechanics
M. Rank, A. Voigt
Summary: This study investigates the influence of varying Gaussian curvature on anomalous vortex-network active turbulence on general surfaces using a numerical approach for a covariant generalized Navier-Stokes equation. The simulation results indicate an alignment of vortex chains with minimal curvature lines of the surface and a dependency of this turbulence regime on the sign and gradient of local Gaussian curvature.
Article
Chemistry, Physical
Dong Yang, Qianfeng Xia, Haitao Gao, Sufang Dong, Guangyuan Zhao, Yingfei Zeng, Fei Ma, Tingwei Hu
Summary: The study investigates the fabrication and mechanism of Pb-intercalated graphene (PbG) produced on SiC, showing that Pb intercalation prefers to happen at the interface between buffer layer and SiC substrate. Pb atoms penetrate into buffer layer through point defects, transforming it into an additional graphene layer. PbG regions exhibit regular ordered moire pattern or irregular scattered moire pattern.
APPLIED SURFACE SCIENCE
(2021)
Article
Physics, Multidisciplinary
Yinan Dong, Roya Zandi, Alex Travesset
Summary: This letter addresses the problem of characterizing the structure of an elastic network constrained to a frozen curved surface. It proposes a new approach based on nonlinear elasticity without using any approximation. The results show agreement with linear elasticity beyond its strict range of applicability. The implications for virus assembly are also discussed.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Kaiwen Li, Zhanpo Han, Lidan Wang, Jiaqing Wang, Chuanwei Zhang, Jiahao Lin, Shiyu Luo, Li Peng, Wenzhang Fang, Yingjun Liu, Ziliang Wu, Yeqiang Tang, Chao Gao, Zhen Xu
Summary: Assembling two-dimensional sheets into three-dimensional forms allows for the creation of materials with rich functionalities. In this study, the wrinkling behaviors of graphene oxide sheets on curved surfaces were investigated, revealing a selection rule for wrinkling modes based on the curvature mismatch between the sheets and target surfaces. This research provides a general and quantitative description framework for wrinkling modulation of 2D materials and has implications for precise fabrication of particles and functional coatings.
Article
Chemistry, Physical
Kaiwen Li, Zhanpo Han, Lidan Wang, Jiaqing Wang, Chuanwei Zhang, Jiahao Lin, Shiyu Luo, Li Peng, Wenzhang Fang, Yingjun Liu, Ziliang Wu, Yeqiang Tang, Chao Gao, Zhen Xu
Summary: Assembling two-dimensional sheets into three-dimensional structures is a promising material design method. This research investigates the wrinkling behaviors of graphene oxide sheets assembled onto curved surfaces, revealing the selection rule of wrinkling modes and providing a quantitative description method that can guide the precise fabrication of particles and functional coatings.
Article
Engineering, Mechanical
Pearson A. Wyder-Hodge, Egor Larionov, Dinesh K. Pai
Summary: The article proposes a method to estimate the orientation of a measured surface during friction measurements using a custom-made hand-held tribometer. The method takes into account the position and orientation of the tribometer relative to the shape of the surface, and allows for lightweight tribometers to be built with cheaper materials without sacrificing accuracy.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Zhaoguo Xue, Tianqi Jin, Shiwei Xu, Ke Bai, Qi He, Fan Zhang, Xu Cheng, Ziyao Ji, Wenbo Pang, Zhangming Shen, Honglie Song, Yumeng Shuai, Yihui Zhang
Summary: In this article, an ordered assembly strategy is introduced to transform 2D thin films into complex 3D structures on various curved surfaces using predefined mechanical loadings and prestretch techniques. The experimental results demonstrate the effectiveness of this method on different curved substrates, and the assembly structures can be accurately captured by mechanics modeling.
Article
Mechanics
Donggeon Hwang, Sungchan Yun
Summary: Manipulations of complex drops and their interactions with complex surfaces have been a hot topic in recent years. In this study, the impact of Janus drops on curved superhydrophobic surfaces is investigated, with a focus on the effects of curvature, Weber number, and viscosity difference. The study predicts the splitting behavior of low-viscosity components from Janus drops and presents regime maps for the transition. It is found that the threshold for splitting can be adjusted by changing surface curvature and viscosity difference. The asymmetric behavior of the components is explained by analyzing residence time and horizontal momenta.
Article
Physics, Applied
Chenwei Wei, Mengjia Cen, Hsiang-Chen Chui, Tun Cao
Summary: This study introduces a device based on TO technique that can control the propagation direction of surface waves by manipulating the refractive index, providing a new approach to manipulate surface wave propagation.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Multidisciplinary
Samuel Bell, Shao-Zhen Lin, Jean-Francois Rupprecht, Jacques Prost
Summary: Cell monolayers are important model systems in the study of tissue biophysics, and the role of curvature in monolayer motion is not well understood. This study presents a hydrodynamic theory for the motion of an apical-basal asymmetric active nematic gel on a curved surface, demonstrating that curvature can qualitatively change the flow pattern of the monolayer.
PHYSICAL REVIEW LETTERS
(2022)
Article
Mathematics
Antonia Jabbour, Stephane Sabourau
Summary: We prove that every local supremum of the systole over the space of Riemannian metrics of curvature at most -1 on a given nonsimply connected closed surface is attained by a hyperbolic metric. As an application, we also present a partial extension of this result to 3-manifolds.
MATHEMATISCHE ANNALEN
(2023)
Article
Multidisciplinary Sciences
Alexandros Glentis, Carles Blanch-Mercader, Lakshmi Balasubramaniam, Thuan Beng Saw, Joseph d'Alessandro, Sebastien Janel, Audrey Douanier, Benedicte Delaval, Frank Lafont, Chwee Teck Lim, Delphine Delacour, Jacques Prost, Wang Xi, Benoit Ladoux
Summary: Researchers have found that epithelial layers in cylindrical tissues with different curvatures exhibit large-scale, persistent, and circumferential rotation. This rotational movement is similar within a common curvature window, even in tissues with inverted curvature. Stable cell-cell adhesion and Rac-1-dependent cell polarity are necessary for this persisting rotation.
