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Related Concept Videos

Mechanical Systems01:22

Mechanical Systems

901
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...
901

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Related Experiment Video

Updated: May 2, 2026

Soft Lithographic Functionalization and Patterning Oxide-free Silicon and Germanium
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Mechanochemical Lithography.

Yuehai Mei1, Wenmao Huang1, Weishuai Di1,2

  • 1Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing 210093, China.

Journal of the American Chemical Society
|May 31, 2022
PubMed
Summary
This summary is machine-generated.

We developed mechanochemical lithography (MCL) for patterning biomolecules on surfaces. This method uses force-triggered reactions for stable, nanoscale patterns in aqueous conditions, advancing biochip and diagnostic applications.

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Area of Science:

  • Biomaterials Science
  • Surface Chemistry
  • Nanotechnology

Background:

  • Patterned biomolecule surfaces are crucial for biochips and diagnostics.
  • Existing methods struggle with physiological conditions and complex structure fabrication.
  • Need for advanced techniques enabling precise biomolecule patterning.

Purpose of the Study:

  • To develop a novel mechanochemical lithography (MCL) method for biomolecule patterning.
  • To enable direct, continuous printing in aqueous environments under physiological conditions.
  • To achieve nanoscale spatial resolution and create complex, stable biomolecular patterns.

Main Methods:

  • Utilized mechanochemical inks (MCIs) containing bioaffinity ligands and mechanoactive groups.
  • Employed compressive force-triggered covalent immobilization via Michael addition between amino groups and maleimide.
  • Fabricated nanoscale patterns of biotin and His-tagged proteins using MCL.

Main Results:

  • Successfully demonstrated direct, continuous printing of biomolecules in aqueous solutions.
  • Achieved stable, covalent immobilization of biomolecules, preventing diffusion-induced broadening.
  • Created nanoscale patterned surfaces with biotin and His-tagged proteins, verified by fluorescence imaging.
  • Showcased the creation of multiplex protein patterns using the MCL technique.

Conclusions:

  • Mechanochemical lithography (MCL) offers a robust method for creating nanoscale biomolecular patterns.
  • The technique is suitable for physiological conditions and enables complex pattern fabrication.
  • MCL holds significant potential for advancing biochip and biomedical diagnostic technologies.