Rapid Voltage Sensing with Single Nanorods via the Quantum Confined Stark Effect

Omri Bar-Elli, Dan Steinitz, Gaoling Yang, Ron Tenne, Anastasia Ludwig, Yung Kuo, Antoine Triller, Shimon Weiss, Dan Oron

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Properly designed colloidal semiconductor quantum dots (QDs) have already been shown to exhibit high sensitivity to external electric fields via the quantum confined Stark effect (QCSE). Yet, detection of the characteristic spectral shifts associated with the effect of the QCSE has traditionally been painstakingly slow, dramatically limiting the sensitivity of these QD sensors to fast transients. We experimentally demonstrate a new detection scheme designed to achieve shot-noise-limited sensitivity to emission wavelength shifts in QDs, showing feasibility for their use as local electric field sensors on the millisecond time scale. This regime of operation is already potentially suitable for detection of single action potentials in neurons at a high spatial resolution.

Original languageEnglish
Pages (from-to)2860-2867
Number of pages8
JournalACS Photonics
Volume5
Issue number7
DOIs
Publication statusPublished - Jul 18 2018

Fingerprint

Stark effect
Nanotubes
Quantum Dots
Nanorods
nanorods
Semiconductor quantum dots
quantum dots
sensitivity
Electric potential
electric potential
Electric fields
Shot noise
Semiconductors
electric fields
shift
sensors
Sensors
shot noise
neurons
Action Potentials

Keywords

  • membrane potential sensing
  • quantum confined Stark effect
  • quantum dots

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Rapid Voltage Sensing with Single Nanorods via the Quantum Confined Stark Effect. / Bar-Elli, Omri; Steinitz, Dan; Yang, Gaoling; Tenne, Ron; Ludwig, Anastasia; Kuo, Yung; Triller, Antoine; Weiss, Shimon; Oron, Dan.

In: ACS Photonics, Vol. 5, No. 7, 18.07.2018, p. 2860-2867.

Research output: Contribution to journalArticle

Bar-Elli, O, Steinitz, D, Yang, G, Tenne, R, Ludwig, A, Kuo, Y, Triller, A, Weiss, S & Oron, D 2018, 'Rapid Voltage Sensing with Single Nanorods via the Quantum Confined Stark Effect', ACS Photonics, vol. 5, no. 7, pp. 2860-2867. https://doi.org/10.1021/acsphotonics.8b00206
Bar-Elli O, Steinitz D, Yang G, Tenne R, Ludwig A, Kuo Y et al. Rapid Voltage Sensing with Single Nanorods via the Quantum Confined Stark Effect. ACS Photonics. 2018 Jul 18;5(7):2860-2867. https://doi.org/10.1021/acsphotonics.8b00206
Bar-Elli, Omri ; Steinitz, Dan ; Yang, Gaoling ; Tenne, Ron ; Ludwig, Anastasia ; Kuo, Yung ; Triller, Antoine ; Weiss, Shimon ; Oron, Dan. / Rapid Voltage Sensing with Single Nanorods via the Quantum Confined Stark Effect. In: ACS Photonics. 2018 ; Vol. 5, No. 7. pp. 2860-2867.
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