声学动力学共价材料工程用于远程控制材料内部的物理性质
Satoshi Honda1, Minami Oka1, Kazuki Fuke1
1Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan.
Advanced materials (Deerfield Beach, Fla.)
|June 21, 2023
概括
这项研究引入了使用 vat 光聚合 (VP) 和 hexaarylbiimidazole (HABI) 的具有动态功能的3D打印聚合物. 光和高强度聚焦超声波 (HIFU) 允许精确控制材料特性和重塑.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
背景情况:
- 瓦特光聚合 (VP) 3D打印 (3DP) 提供了高精度,但与动态材料属性操纵作斗争.
- 来自VP-3DP的交联聚合物通常是不溶性和不融合性,限制了制造后的修改.
- 在先进的应用中,开发引入动态功能到3D打印材料的方法至关重要.
研究的目的:
- 使用VP-3DP制造响应光和高强度聚焦超声波 (HIFU) 的交联聚合物材料.
- 将可逆交叉链接引入到3D打印对象中,通过六二胺醇 (HABI) 化学.
- 为了证明调整物理属性的能力,使3D打印材料的精确修改,愈合和重塑成为可能.
主要方法:
- 利用光聚合 (VP) 和3D打印 (3DP) 来制造交联聚合物.
- 在聚合物链中加入六二胺醇 (HABI),以实现对光和HIFU的响应.
- 研究了HABI的直角光化学和可逆交联的光聚合.
- 应用光刺激和高强度聚焦超声波 (HIFU) 来诱导物质反应.
主要成果:
- 成功制造出3D打印的物体,使用HABI衍生可逆交叉链接.
- 证明光刺激主要在表面通过产生三利米达醇基 (TPIRs) 触发反应.
- 展示了HIFU在材料内部诱导裂变和反应的能力,甚至超越障碍物.
- 证实了HABI光化学和光聚合的直角性,允许控制的交叉链接.
结论:
- 开发的系统可以创建动态,响应快的3D打印聚合物材料.
- 与修改HABI嵌入聚合物的光刺激相比,HIFU提供了更好的透和控制.
- 这项技术在调整材料特性,回收利用,精确修改,治愈和重塑3D打印对象方面具有重大潜力.
相关概念视频
01:17Magnetic Damping
505
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
505
01:27Electrostatic Boundary Conditions in Dielectrics
1.3K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's...
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's...
1.3K
01:16Electrostatic Boundary Conditions
527
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
527
02:54Molecular and Ionic Solids
17.3K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
17.3K
02:56Intermolecular Forces and Physical Properties
20.9K
20.9K
01:19Electro-mechanical Systems
1.0K
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
1.0K