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

doi:https://doi.org/10.1021/acsphotonics.8b00206

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

Weizmann Institute of Science, Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	2860-2867
Number of pages	8
Journal	ACS Photonics
Volume	5
Issue number	7
DOIs	https://doi.org/10.1021/acsphotonics.8b00206
State	Published - 24 Jun 2018
Event	8th International Conference on Surface Plasmon Photonics (SPP) - Taipei Duration: 22 May 2017 → 26 May 2017

Keywords

membrane potential sensing
quantum confined Stark effect
quantum dots

All Science Journal Classification (ASJC) codes

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

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title = "Rapid Voltage Sensing with Single Nanorods via the Quantum Confined Stark Effect",

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.",

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note = "The authors would like to thank K. Park for helpful discussions. The authors gratefully acknowledge funding by the Human Frontiers Science Project RGP0061/2015 and the European Research Council advanced grant NVS 669941. A.L. acknowledges support from the Marie Curie Individual Fellowship NanoVoltSens 752019. D.O. acknowledges support from the Crown Center of Photonics and the Israeli Centers of Research Excellence Program. S.W. acknowledges support by DARPA Fund #D14PC00141 and by the U.S. Department of Energy Office of Science, Office of Biological and Environmental Research program, under Award Number DE-FC02-02ER63421; 8th International Conference on Surface Plasmon Photonics (SPP) ; Conference date: 22-05-2017 Through 26-05-2017",

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AU - Bar-Elli, Omri

AU - Steinitz, Dan

AU - Yang, Gaoling

AU - Tenne, Ron

AU - Ludwig, Anastasia

AU - Kuo, Yung

AU - Triller, Antoine

AU - Weiss, Shimon

AU - Oron, Dan

N1 - The authors would like to thank K. Park for helpful discussions. The authors gratefully acknowledge funding by the Human Frontiers Science Project RGP0061/2015 and the European Research Council advanced grant NVS 669941. A.L. acknowledges support from the Marie Curie Individual Fellowship NanoVoltSens 752019. D.O. acknowledges support from the Crown Center of Photonics and the Israeli Centers of Research Excellence Program. S.W. acknowledges support by DARPA Fund #D14PC00141 and by the U.S. Department of Energy Office of Science, Office of Biological and Environmental Research program, under Award Number DE-FC02-02ER63421

PY - 2018/6/24

Y1 - 2018/6/24

N2 - 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.

AB - 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.

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ER -

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

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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