NaCl ion detection using a silica toroid microcavity

Jiro Nishimura, Misako Kobayashi, Ryusuke Saito, Takasumi Tanabe

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

An optical-microcavity-based sensor is an important building block for an optofluidics system, because it allows us to fabricate small devices with high sensitivity. Here we describe the detection of NaCl and pH in water using a silica toroid microcavity. First we demonstrate the detection of NaCl particles, and show that a detection sensitivity of 0.38mM is possible with a sample volume of 0.03 nl. Then, we report the detection of NaCl ions in liquid and demonstrate a sensitivity of 3.20 mM and also, in principle, the detection of pH with a sensitivity of 0.14 pH. Finally, we integrate a tapered optical fiber, a silica toroid microcavity, and a fluidic channel for future optofluidics applications.

Original languageEnglish
Pages (from-to)6391-6396
Number of pages6
JournalApplied Optics
Volume54
Issue number20
DOIs
Publication statusPublished - 2015 Jul 10

Fingerprint

toroids
Microcavities
Silica
silicon dioxide
Ions
ions
Fluidics
sensitivity
Optical fibers
fluidics
Sensors
Liquids
optical fibers
Water
sensors
liquids
water

Keywords

  • Microcavities
  • Optical sensing and sensors

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

NaCl ion detection using a silica toroid microcavity. / Nishimura, Jiro; Kobayashi, Misako; Saito, Ryusuke; Tanabe, Takasumi.

In: Applied Optics, Vol. 54, No. 20, 10.07.2015, p. 6391-6396.

Research output: Contribution to journalArticle

Nishimura, J, Kobayashi, M, Saito, R & Tanabe, T 2015, 'NaCl ion detection using a silica toroid microcavity', Applied Optics, vol. 54, no. 20, pp. 6391-6396. https://doi.org/10.1364/AO.54.006391
Nishimura, Jiro ; Kobayashi, Misako ; Saito, Ryusuke ; Tanabe, Takasumi. / NaCl ion detection using a silica toroid microcavity. In: Applied Optics. 2015 ; Vol. 54, No. 20. pp. 6391-6396.
@article{1f69cd380c22479d968e2ab1e4433927,
title = "NaCl ion detection using a silica toroid microcavity",
abstract = "An optical-microcavity-based sensor is an important building block for an optofluidics system, because it allows us to fabricate small devices with high sensitivity. Here we describe the detection of NaCl and pH in water using a silica toroid microcavity. First we demonstrate the detection of NaCl particles, and show that a detection sensitivity of 0.38mM is possible with a sample volume of 0.03 nl. Then, we report the detection of NaCl ions in liquid and demonstrate a sensitivity of 3.20 mM and also, in principle, the detection of pH with a sensitivity of 0.14 pH. Finally, we integrate a tapered optical fiber, a silica toroid microcavity, and a fluidic channel for future optofluidics applications.",
keywords = "Microcavities, Optical sensing and sensors",
author = "Jiro Nishimura and Misako Kobayashi and Ryusuke Saito and Takasumi Tanabe",
year = "2015",
month = "7",
day = "10",
doi = "10.1364/AO.54.006391",
language = "English",
volume = "54",
pages = "6391--6396",
journal = "Applied Optics",
issn = "1559-128X",
publisher = "The Optical Society",
number = "20",

}

TY - JOUR

T1 - NaCl ion detection using a silica toroid microcavity

AU - Nishimura, Jiro

AU - Kobayashi, Misako

AU - Saito, Ryusuke

AU - Tanabe, Takasumi

PY - 2015/7/10

Y1 - 2015/7/10

N2 - An optical-microcavity-based sensor is an important building block for an optofluidics system, because it allows us to fabricate small devices with high sensitivity. Here we describe the detection of NaCl and pH in water using a silica toroid microcavity. First we demonstrate the detection of NaCl particles, and show that a detection sensitivity of 0.38mM is possible with a sample volume of 0.03 nl. Then, we report the detection of NaCl ions in liquid and demonstrate a sensitivity of 3.20 mM and also, in principle, the detection of pH with a sensitivity of 0.14 pH. Finally, we integrate a tapered optical fiber, a silica toroid microcavity, and a fluidic channel for future optofluidics applications.

AB - An optical-microcavity-based sensor is an important building block for an optofluidics system, because it allows us to fabricate small devices with high sensitivity. Here we describe the detection of NaCl and pH in water using a silica toroid microcavity. First we demonstrate the detection of NaCl particles, and show that a detection sensitivity of 0.38mM is possible with a sample volume of 0.03 nl. Then, we report the detection of NaCl ions in liquid and demonstrate a sensitivity of 3.20 mM and also, in principle, the detection of pH with a sensitivity of 0.14 pH. Finally, we integrate a tapered optical fiber, a silica toroid microcavity, and a fluidic channel for future optofluidics applications.

KW - Microcavities

KW - Optical sensing and sensors

UR - http://www.scopus.com/inward/record.url?scp=84942368378&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84942368378&partnerID=8YFLogxK

U2 - 10.1364/AO.54.006391

DO - 10.1364/AO.54.006391

M3 - Article

VL - 54

SP - 6391

EP - 6396

JO - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 20

ER -