Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Amperometry: Overview01:10

Amperometry: Overview

536
Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...
536
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

568
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
568

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dual-frequency fiber-array photoacoustic computed tomography for high-resolution deep brain imaging.

Light, science & applications·2026
Same author

All-fiber photoacoustic endomicroscopy reveals layer-specific angiogenesis-oxygenation uncoupling in experimental colitis.

Science advances·2026
Same author

Hierarchically Multifunctional Fiber-optic Theranostic Probe for Cancer Photothermal-photodynamic Synergism.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

A wearable fiber-optoacoustic interface for continuous deep-tissue hemodynamics in MRI environments.

Photoacoustics·2026
Same author

Multifunctional fiber-optic theranostic probe for closed-loop tumor photothermal therapy.

Light, science & applications·2026
Same author

Enhanced radio-luminescence and density in amorphous optical glass for X-ray imaging.

Optics express·2026
Same journal

Detection and cross-organ characterization of physiological response to microplastic stress in Panax ginseng based on hyperspectral imaging assisted with machine learning.

Talanta·2026
Same journal

Electron-driven proton transfer behaviors in oxidative DNA lesion 8-oxoguanine: A computational study.

Talanta·2026
Same journal

TiO<sub>2</sub> nanoengineering for high-performance photoelectrochemical biosensors: From fundamental strategies to frontier applications.

Talanta·2026
Same journal

CRISPR-based diagnostics for ESKAPE drug-resistant bacteria: From proof-of-concept to point-of-care.

Talanta·2026
Same journal

Integrated 3D printed wearable microfluidics with removable electrochemical sensor for morphine monitoring in sweat.

Talanta·2026
Same journal

Eu-doped Tourmaline@MOF-ZnO core-shell nanocomposites: Enabling UV-activated room-temperature and ppb-level n-butanol sensing.

Talanta·2026
See all related articles

Related Experiment Video

Updated: Jun 29, 2025

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation
11:18

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation

Published on: January 7, 2019

8.5K

A capillary-aided microfiber Bragg grating pH sensor for hydrovoltaic technology.

Yongkang Zhang1, Heyi Xia2, Qiaochu Yang1

  • 1Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 510632, China; College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China.

Talanta
|April 4, 2024
PubMed
Summary
This summary is machine-generated.

A new miniature fiber-optic pH probe enables precise measurement of hydrogen ions in ultra-small water samples from hydrovoltaic devices. This breakthrough facilitates characterization of emerging energy harvesting technologies.

Keywords:
Bragg gratingFiber optic sensorHydrovoltaicMicrofiber probeSmall aqueous sample detectionpH sensor

More Related Videos

Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors
09:15

Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors

Published on: November 22, 2016

10.6K
Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
08:19

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Published on: June 1, 2012

14.4K

Related Experiment Videos

Last Updated: Jun 29, 2025

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation
11:18

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation

Published on: January 7, 2019

8.5K
Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors
09:15

Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors

Published on: November 22, 2016

10.6K
Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing
08:19

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Published on: June 1, 2012

14.4K

Area of Science:

  • Materials Science
  • Energy Harvesting
  • Sensor Technology

Background:

  • Hydrovoltaic technology generates energy from water but faces challenges in quantifying hydrogen ions due to small sample volumes.
  • Existing methods are inadequate for analyzing trace amounts of hydrogen ions in microscale hydrovoltaic systems.

Purpose of the Study:

  • To develop a miniature fiber-optic pH probe for accurate detection of hydrogen ions in ultra-small aqueous samples.
  • To enable effective characterization and monitoring of hydrovoltaic microdevices.

Main Methods:

  • A unilaterally tapered-microfiber Bragg grating (μFBG) was functionalized with sodium alginate for pH sensitivity.
  • The μFBG sensor was encapsulated into a sampling capillary for detecting trace samples (<2 μL).

Main Results:

  • The tapered-μFBG sensor demonstrated high pH sensitivity (62.8 p.m./pH) and a low limit of resolution (0.096 pH).
  • The sensor successfully monitored and characterized a hydrovoltaic microdevice, correlating pH with microcurrent generation.

Conclusions:

  • The developed miniature fiber-optic pH probe is a promising tool for analyzing microsamples in hydrovoltaics, materials science, energy, biology, and medicine.
  • This technology addresses the critical need for detecting and characterizing trace analytes in microfluidic systems.