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Related Concept Videos

Magnetic Damping01:17

Magnetic Damping

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...

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Planar and Three-Dimensional Printing of Conductive Inks
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Fast and versatile electrostatic disc microprinting for piezoelectric elements.

Xuemu Li1,2, Zhuomin Zhang1,2, Zehua Peng1,2

  • 1Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.

Nature Communications
|October 14, 2023
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Summary
This summary is machine-generated.

A new electrostatic disc microprinting technique enables rapid, large-area fabrication of piezoelectric nanoparticles, films, and patterns. This method significantly enhances piezoelectric properties and material versatility for advanced applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Additive Manufacturing

Background:

  • Piezoelectric nanoparticles, films, and patterns are crucial for sensing, actuation, catalysis, and energy harvesting.
  • Current fabrication methods face challenges in achieving high productivity, large-area coverage, and precise structural control.

Purpose of the Study:

  • To introduce a novel, fast, and versatile electrostatic disc microprinting technique.
  • To demonstrate the fabrication of lead zirconate titanate (PZT) based piezoelectric elements with controlled structures and sizes.

Main Methods:

  • Utilized electrostatic disc microprinting, leveraging liquid-air interface instability for ink droplet manipulation.
  • Developed a multiplexed tip jetting mode for layer-by-layer deposition.
  • Fabricated free-standing nanoparticles, films, and micro-patterns of PZT and other functional materials.

Main Results:

  • Achieved high piezoelectric strain constant (560 pm/V) in PZT films, exceeding state-of-the-art by 1-2 times.
  • Demonstrated ultra-high deposition speeds up to 10^9 μm³/s, an order of magnitude faster than existing techniques.
  • Successfully printed diverse materials including ceramic and metal nanoparticles, polymers, and biological molecules.

Conclusions:

  • Electrostatic disc microprinting offers a highly productive and versatile platform for fabricating advanced piezoelectric materials.
  • The technique shows significant potential for applications in electronics, biotechnology, and beyond due to its speed and material compatibility.