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Related Experiment Video

Updated: Jun 13, 2026

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

Superconducting nanowires fabricated using molecular templates.

Alexey Bezryadin¹, Paul M Goldbart

¹Frederick Seitz Materials Research Laboratory Department of Physics University of Illinois at Urbana-Champaign Urbana, Illinois 61801, USA. bezryadi@illinois.edu

Advanced Materials (Deerfield Beach, Fla.)

|April 20, 2010

Summary

Single molecules like DNA or carbon nanotubes template ultra-thin superconducting nanowires. These wires exhibit quantum effects like macroscopic quantum tunneling due to thermal fluctuations affecting their superconductivity.

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Area of Science:

Nanotechnology
Condensed Matter Physics
Materials Science

Background:

Utilizes single deoxyribonucleic acid (DNA) molecules or single-walled carbon nanotubes (SWCNTs) as templates for fabricating nanodevices.
Investigates superconducting devices fabricated using these molecular templates at cryogenic temperatures.
Focuses on the unique properties of ultra-thin nanowires, comparable in diameter to the templating molecule.

Discussion:

Analyzes the susceptibility of extremely thin nanowires to thermal fluctuations, specifically collective phase slips.
Explains how phase slips disrupt the quantum coherence of the superconducting condensate, leading to slight resistance below the critical temperature.
Highlights the transition from thermal fluctuation dominance to quantum fluctuation effects at low temperatures.

Key Insights:

Demonstrates the phenomenon of macroscopic quantum tunneling in superconducting nanowires at low temperatures.
Establishes molecular templating as a viable method for creating nanoscale superconducting devices.
Confirms the significant impact of quantum fluctuations on the electronic state of nanoscale conductors.

Outlook:

Suggests the broad applicability of molecular templating for synthesizing nanowires from diverse materials including normal metals, ferromagnetic alloys, and semiconductors.
Opens avenues for novel nanoscale electronic and quantum device development.
Paves the way for future research into quantum phenomena in low-dimensional superconducting systems.