Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

pH

The potential of hydrogen (pH) is a measure of the acidity or basicity of a water-based solution determined by the concentration of hydronium ions (H3O+). In one liter of pure water at neutral pH, there are 1×10−7 moles of hydronium ions. However, the extensive range of hydronium ion concentrations present in water-based solutions makes measuring pH in moles cumbersome. Therefore, a pH scale was developed to convert moles of hydronium ions into the negative logarithm of the hydronium ion...

Potentiometry: Membrane Electrodes

Potentiometry: Membrane Electrodes

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 the...

Pressure Gauges

Pressure Gauges

Most pressure gauges, like those on scuba tanks, are calibrated to read zero at atmospheric pressure. Readings from such gauges are called the gauge pressure, which is the pressure relative to atmospheric pressure. When the pressure inside the tank exceeds atmospheric pressure, the gauge reports a positive value. Some gauges are designed to measure negative pressure. For example, many physics experiments must take place in a vacuum chamber, a rigid chamber from which some of the air is pumped...

High-Performance Liquid Chromatography: Types of Detectors

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...

Measurement of Fluid Pressure

Measurement of Fluid Pressure

Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...

Bioreactor Controls-I

Bioreactor Controls-I

Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly monitored using...

You might also read

Related Articles

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

Sort by

Same author

Hierarchical regulation and mechanism of "open-hollow-fibrous network" structures: Osteogenic-angiogenic coupling responses of poly(γ-benzyl-L-glutamate) microspheres.

Biomaterials advances·2026

Same author

Injectable porous nanocomposite microgel assemblies engineered via a triple-dynamic crosslinking strategy for vascularized bone regeneration.

Materials today. Bio·2026

Same author

Hybrid hydrogel system integrating thermoresponsive microspheres and KGN-loaded nanofibers enables efficient cartilage matrix regeneration.

Regenerative biomaterials·2026

Same author

Bioactive Glass-Reinforced Composite Bone Adhesive with pH Modulation, Mechanical Strengthening, and Antibacterial and Osteogenic Functions.

ACS applied materials & interfaces·2026

Same author

Bioinspired Metal-Ligand Coordination for Tuning the Mechanical Properties and Antibacterial Activity of Dual-Cross-Linked Hydrogels.

Biomacromolecules·2026

Same author

Polarization-independent surface nanostructuring by femtosecond laser irradiation via microsphere in far field and ambient air.

Light, science & applications·2026

Search research articles

Related Experiment Video

Updated: Jun 30, 2026

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Published on: August 8, 2017

Phytic Acid-Induced Gradient Hydrogels for Highly Sensitive and Broad Range Pressure Sensing.

Lei Song^1,2,3, Zhenwu Wang⁴, Shengjia Chen^1,2,5

¹Laboratory of Advanced Theranostic Materials and Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)

|January 17, 2025

Summary

Researchers developed a novel gradient ionic hydrogel using phytic acid for advanced flexible pressure sensors. This material offers high sensitivity, a wide sensing range, and excellent biocompatibility for wearable applications.

Keywords:

broad sensing range gradient ionic hydrogels high sensitivity phytic acid pressure sensing

More Related Videos

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Related Experiment Videos

Last Updated: Jun 30, 2026

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Published on: August 8, 2017

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique

Published on: March 24, 2023

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Author Spotlight: Microfluidic Channel-Based Soft Electrodes and Their Application in Capacitive Pressure Sensing

Published on: March 17, 2023

Area of Science:

Materials Science
Polymer Chemistry
Sensor Technology

Background:

Ionic conductive hydrogels are key for iontronic sensor dielectric layers.
Gradient ionic hydrogels offer wide pressure response ranges due to modulus gradients.
Fabricating optimal gradient hydrogels with desired properties remains a challenge.

Purpose of the Study:

To develop a novel gradient ionic hydrogel with enhanced mechanical and sensing properties.
To explore the distinct interactions between phytic acid and different polymers for hydrogel fabrication.
To create a flexible pressure sensor with high sensitivity, broad range, and low-pressure detection.

Main Methods:

Investigated distinct interactions of phytic acid (PA) with polyacrylamide and polyacrylic acid.
Utilized a precursor solution infiltration method to construct modulus gradient ionic hydrogels.
Fabricated and tested flexible pressure sensors based on the developed gradient hydrogel.

Main Results:

Achieved a gradient hydrogel with high sensitivity (9.00 kPa⁻¹) and a broad sensing range (≈3.7 Pa to 1.2 MPa).
Demonstrated superior performance in detecting subtle pressures (acoustic waves, airflow) and moderate pressures (speaking, finger pressing).
The hydrogel exhibited significant antibacterial properties and biocompatibility.

Conclusions:

A novel modulus gradient ionic hydrogel was successfully fabricated using a unique phytic acid-polymer interaction mechanism.
The resulting flexible pressure sensor shows exceptional performance across a wide pressure spectrum, including low-pressure detection.
The hydrogel's bioactivity and sensing capabilities highlight its potential for advanced wearable sensing applications.