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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

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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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Sub-nanometer Resolution Imaging with Amplitude-modulation Atomic Force Microscopy in Liquid
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Nanofluidic devices prepared by an atomic force microscopy-based single-scratch approach.

Yongda Yan1,2, Jiqiang Wang2, Shunyu Chang2

  • 1Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education, Harbin Institute of Technology Harbin Heilongjiang 150001 P. R. China gengyanquan@hit.edu.cn +86-451-86415244 +86-451-86412924.

RSC Advances
|May 11, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed nanofluidic chips for nanoscale electrical and enzymatic studies. Changes in electric current during enzymatic reactions served as a label-free indicator for enzyme activity detection.

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Area of Science:

  • Nanotechnology
  • Biochemistry
  • Electrochemistry

Background:

  • Nanofluidic chips offer precise control over nanoscale environments.
  • Electrical characterization and enzymatic reactions are crucial for biosensing applications.

Purpose of the Study:

  • To fabricate nanofluidic chips using a single-scratch approach.
  • To demonstrate electrical characterization and enzymatic reactions at the nanoscale.
  • To investigate label-free detection of enzymatic activity.

Main Methods:

  • Fabrication of nanofluidic chips with varying nanochannel numbers via atomic force microscopy (AFM) single-scratch method.
  • Electrical characterization of chips under different solution concentrations.
  • Enzymatic reaction studies using trypsin with poly-l-lysine (PLL) and thrombin.

Main Results:

  • Demonstrated electrical characterization and nanoscale enzymatic reactions on fabricated chips.
  • Investigated the impact of nanochannel number and solution concentration on electric current.
  • Showcased label-free detection of enzymatic activity through electric current changes.

Conclusions:

  • Electric current changes can serve as a label-free indicator for enzymatic activity.
  • Nanofluidic chips are suitable platforms for nanoscale biosensing and reaction monitoring.