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Related Experiment Video

Updated: May 17, 2026

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

A DNA-based and electrochemically transduced keypad lock system with reset function.

Wei Hong1, Yan Du, Tianshu Wang

  • 1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|October 31, 2012
PubMed
Summary
This summary is machine-generated.

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Design Example01:23

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...

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Researchers developed a resettable DNA-based keypad lock. This novel system uses electrochemical current and requires a specific DNA sequence combination to unlock, offering a secure and reusable locking mechanism.

Area of Science:

  • Biotechnology
  • Molecular Engineering
  • Sensor Technology

Background:

  • Traditional security systems face challenges with counterfeiting and complex mechanisms.
  • DNA nanotechnology offers unique molecular recognition capabilities for security applications.

Purpose of the Study:

  • To develop a proof-of-concept resettable keypad lock system based on DNA molecules.
  • To utilize electrochemical current as a signal output for the DNA-based lock.

Main Methods:

  • Designing a DNA-based input system requiring a specific combination and sequence.
  • Integrating the DNA input with an electrochemical detection mechanism.
  • Implementing a facile reset function for the lock system.

Main Results:

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Last Updated: May 17, 2026

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks
07:50

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

  • Successfully demonstrated a functional DNA-based keypad lock system.
  • The lock system activates only with the correct DNA input combination and sequence.
  • The system incorporates a readily achievable reset capability.

Conclusions:

  • A resettable DNA-based keypad lock system with electrochemical output is feasible.
  • This technology presents a novel approach to molecular security and information encoding.
  • The system's design allows for secure access control based on specific DNA sequences.