PH measurements in 16-nL-volume solutions using terahertz chemical microscopy

Toshihiko Kiwa; Tatsuki Kamiya; Taiga Morimoto; Kenji Sakai; Keiji Tsukada

doi:10.1364/OE.26.008232

PH measurements in 16-nL-volume solutions using terahertz chemical microscopy

Toshihiko Kiwa, Tatsuki Kamiya, Taiga Morimoto, Kenji Sakai, Keiji Tsukada

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

15 Citations (Scopus)

Abstract

Terahertz chemical microscopy has been developed for measuring the pH of a solution using only a small volume. The microsolution wells were fabricated on the surface of the sensing plate using a conventional photolithograph technique. Because the pH value can be calculated from the amplitude of a terahertz wave directly radiated from a sensing plate by a femtosecond laser irradiation, this method does not require any reference electrode in the solution. Thus, pH measurement can be achieved with a volume as small as 16 nL.

Original language	English
Pages (from-to)	8232-8238
Number of pages	7
Journal	Optics Express
Volume	26
Issue number	7
DOIs	https://doi.org/10.1364/OE.26.008232
Publication status	Published - Apr 2 2018

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "Terahertz chemical microscopy has been developed for measuring the pH of a solution using only a small volume. The microsolution wells were fabricated on the surface of the sensing plate using a conventional photolithograph technique. Because the pH value can be calculated from the amplitude of a terahertz wave directly radiated from a sensing plate by a femtosecond laser irradiation, this method does not require any reference electrode in the solution. Thus, pH measurement can be achieved with a volume as small as 16 nL.",

author = "Toshihiko Kiwa and Tatsuki Kamiya and Taiga Morimoto and Kenji Sakai and Keiji Tsukada",

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AU - Kiwa, Toshihiko

AU - Kamiya, Tatsuki

AU - Morimoto, Taiga

AU - Sakai, Kenji

AU - Tsukada, Keiji

N1 - Funding Information: Japan Society for the Promotion of Science (JSPS) (KAKENHI B 16H03887). Publisher Copyright: © 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

PY - 2018/4/2

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N2 - Terahertz chemical microscopy has been developed for measuring the pH of a solution using only a small volume. The microsolution wells were fabricated on the surface of the sensing plate using a conventional photolithograph technique. Because the pH value can be calculated from the amplitude of a terahertz wave directly radiated from a sensing plate by a femtosecond laser irradiation, this method does not require any reference electrode in the solution. Thus, pH measurement can be achieved with a volume as small as 16 nL.

AB - Terahertz chemical microscopy has been developed for measuring the pH of a solution using only a small volume. The microsolution wells were fabricated on the surface of the sensing plate using a conventional photolithograph technique. Because the pH value can be calculated from the amplitude of a terahertz wave directly radiated from a sensing plate by a femtosecond laser irradiation, this method does not require any reference electrode in the solution. Thus, pH measurement can be achieved with a volume as small as 16 nL.

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PH measurements in 16-nL-volume solutions using terahertz chemical microscopy

Abstract

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