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Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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Fluid-Actuated Nano-Micro-Macro Structure Morphing Enables Smart Multispectrum Compatible Stealth.

Xiuyue Yang1, Leilei Liang2, Chen Li2

  • 1College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.

Nano Letters
|December 19, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel fluid-actuated smart stealth device. It dynamically adjusts visible, radar, and infrared signatures for advanced camouflage applications.

Keywords:
chiral liquid crystal elastomerselectromagnetic wave absorptionfluid-actuatedmultispectral compatible camouflagestructural transformation

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Area of Science:

  • Materials Science
  • Optics
  • Electromagnetics

Background:

  • Modern detection systems necessitate advanced camouflage technologies with multispectral compatibility and dynamic regulation.
  • Developing multispectral stealth is challenging due to differing frequency-band principles.

Purpose of the Study:

  • To propose a design concept for a fluid-actuated, multispectral compatible smart stealth device.
  • To enable dynamic regulation of visible, radar, and infrared signatures for enhanced stealth capabilities.

Main Methods:

  • A device employing a deformable mechanochromic layer/elastomer with a channeled dielectric layer was designed.
  • Fluid actuation was used to transmit mechanical strain, altering visible reflectance and reconfiguring spatial structure for radar absorption.
  • Heat-absorption properties were utilized for infrared stealth.

Main Results:

  • The device achieved dynamic visible reflectance modulation in the [568, 699] nm range.
  • Broadband radar absorption was demonstrated in the [8.16, 18.0] GHz range.
  • Dynamic infrared stealth was achieved with a temperature difference of approximately 16.5 °C.

Conclusions:

  • The proposed device offers a new strategy for stealth technology with multispectral compatibility and dynamic regulation.
  • The device exhibits rapid response time (~1 s), excellent cycling performance (100 cycles), and programmability (10 codes).