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Related Experiment Video

Updated: Sep 30, 2025

Generation of Dynamical Environmental Conditions using a High-Throughput Microfluidic Device
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A flexible and stretchable bionic true random number generator.

Yongbiao Wan1,2, Kun Chen1,2, Feng Huang1,2

  • 1Microsystem and Terahertz Research Center, China Academy of Engineering Physics, Chengdu, 610200 China.

Nano Research
|March 14, 2022
PubMed
Summary
This summary is machine-generated.

A new flexible and stretchable bionic true random number generator (TRNG) offers enhanced security for connected devices. Inspired by nature, this device provides reliable random numbers even under extreme conditions, ideal for flexible electronics.

Keywords:
bionic microstructureflexible electronicsinformation securitypolydimethylsiloxane (PDMS)random number generator

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Area of Science:

  • Materials Science
  • Information Security
  • Biomimetics

Background:

  • Increasing demand for secure data transmission necessitates robust true random number generators (TRNGs).
  • Existing TRNGs are often rigid, limiting their integration with flexible electronic platforms.
  • Biological architectures offer unique and random patterns suitable for TRNG inspiration.

Purpose of the Study:

  • To develop a flexible and stretchable bionic TRNG inspired by natural biological structures.
  • To demonstrate a low-cost, environmentally friendly manufacturing process for the bionic TRNG.
  • To evaluate the performance, randomness, and reliability of the flexible TRNG.

Main Methods:

  • Molding flexible TRNG films from natural plant microstructures (e.g., ginkgo leaf).
  • Extracting random numbers from laser speckle patterns generated by the bionic film.
  • Conducting rigorous randomness tests (NIST, TestU01, DIEHARDER).
  • Performing mechanical stress (10,000 cycles of stretching/bending) and thermal shock (-25-80 °C) tests.

Main Results:

  • Achieved a fast random number generation speed of up to 1.04 Gbit/s.
  • High random number extraction rate of 72% from laser speckle patterns.
  • Generated random bit streams passed all standard randomness test suites.
  • Demonstrated robust mechanical reliability and thermal stability after extensive testing.

Conclusions:

  • The bionic TRNG exhibits excellent performance, randomness, and durability.
  • The flexible and stretchable nature of the TRNG is suitable for emerging flexible networked electronics.
  • This biomimetic approach offers a promising solution for secure information exchange in modern connected systems.