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相关概念视频

Mechanical Systems01:22

Mechanical Systems

586
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
586
Open and closed-loop control systems01:17

Open and closed-loop control systems

1.6K
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
1.6K
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft01:23

Design Example: Deciding Thickness of Lubricating Fluid in a Shaft

331
Effective lubrication between a rotating shaft and its bearing housing is essential in rotating machinery to minimize friction, wear, and energy loss. With carefully controlled thickness and viscosity, the lubricant layer prevents metal-to-metal contact, ensuring smooth operation.
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular velocity...
331

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相关实验视频

Updated: Jan 17, 2026

Microfluidic Chips Controlled with Elastomeric Microvalve Arrays
18:11

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基于木材的面向对象沉积用于可编程的机械和3D流体控制.

Yeonsoo Kim1, Donghyeok Kang1, Sungchul Shin1,2

  • 1Department of Agriculture, Forestry, and Bioresources, Seoul National University, Seoul 08826, Republic of Korea.

ACS applied materials & interfaces
|September 22, 2025
PubMed
概括
此摘要是机器生成的。

我们开发了基于木材的面向对象沉积 (WOOD),一种使用木材和数字光处理的3D打印方法. 这种技术可以保护木材.

关键词:
在DLP3D打印中使用3D打印.密集化 密集化是一种微流体设备的微流体设备多孔和对齐的结构结构.基于木材的添加剂制造

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相关实验视频

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科学领域:

  • 材料科学与工程 材料科学与工程
  • 增材制造 增材制造 增材制造
  • 生物材料是一种生物材料.

背景情况:

  • 天然木材具有固有的对齐纤维结构和多孔性,非常适合异型和毛细管活性结构.
  • 当前的增材制造方法难以保持木材的结构特征,限制了复杂的功能设计中的应用.
  • 需要先进的制造技术来利用木材的特性在工程材料中.

研究的目的:

  • 推出基于木材的面向对象沉积 (WOOD),一种用于制造基于木材的结构的新型3D打印方法.
  • 用WOOD技术证明木材的异构性和多孔性的保存.
  • 探索WOOD在创造机械和流体功能架构方面的潜力.

主要方法:

  • 通过将脱色木板与数字光处理 (DLP) 3D打印相结合,开发了WOOD.
  • 用可光固化的单体浸切片木层,对它们进行对齐,并为方向控制选择性光聚合.
  • 制定了木质单体杂交的加工标准,重点关注光传输,固化深度和结构完整性;密度化用于提高分辨率.

主要成果:

  • 通过WOOD工艺成功制造了具有保留木材异构性和多孔性的3D结构.
  • 通过控制不同层的纤维取向,在灵感来自于原木的架构中实现可编程变形,从而产生集成的灵活性和刚性.
  • 在垂直层结构中展示了3D流体控制,使压力驱动的流量切换和空间分辨的pH感应成为可能.

结论:

  • WOOD是一个可扩展和可持续的3D打印平台,它将天然木材的结构优势与增材制造精度相结合.
  • 该技术通过保留木材固有的特性,为生物灵感材料,微流体设备和多功能复合材料打开了新的可能性.
  • 木材可以创建复杂的功能架构,具有量身定制的机械和流体行为.