Next Article in Journal
A Stress Sensor Based on Galvanic Skin Response (GSR) Controlled by ZigBee
Previous Article in Journal
Improved Maturity and Ripeness Classifications of Magnifera Indica cv. Harumanis Mangoes through Sensor Fusion of an Electronic Nose and Acoustic Sensor
Previous Article in Special Issue
Exploring Transduction Mechanisms of Protein Transduction Domains (PTDs) in Living Cells Utilizing Single-Quantum Dot Tracking (SQT) Technology
Article Menu

Export Article

Open AccessReview

Sensing with Superconducting Point Contacts

Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore
Author to whom correspondence should be addressed.
Sensors 2012, 12(5), 6049-6074;
Received: 14 March 2012 / Revised: 6 April 2012 / Accepted: 20 April 2012 / Published: 10 May 2012
(This article belongs to the Special Issue Sensing with Quantum Dots)
PDF [515 KB, uploaded 21 June 2014]


Superconducting point contacts have been used for measuring magnetic polarizations, identifying magnetic impurities, electronic structures, and even the vibrational modes of small molecules. Due to intrinsically small energy scale in the subgap structures of the supercurrent determined by the size of the superconducting energy gap, superconductors provide ultrahigh sensitivities for high resolution spectroscopies. The so-called Andreev reflection process between normal metal and superconductor carries complex and rich information which can be utilized as powerful sensor when fully exploited. In this review, we would discuss recent experimental and theoretical developments in the supercurrent transport through superconducting point contacts and their relevance to sensing applications, and we would highlight their current issues and potentials. A true utilization of the method based on Andreev reflection analysis opens up possibilities for a new class of ultrasensitive sensors. View Full-Text
Keywords: point contact spectroscopy; superconductivity; andreev reflections point contact spectroscopy; superconductivity; andreev reflections
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Nurbawono, A.; Zhang, C. Sensing with Superconducting Point Contacts. Sensors 2012, 12, 6049-6074.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top