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

Thermal Strain01:19

Thermal Strain

2.9K
Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...
2.9K
Shearing Strain01:20

Shearing Strain

1.4K
The shearing strain represents a cubic element's angular change when subjected to shearing stress. This type of stress can transform a cube into an oblique parallelepiped without influencing normal strains. The cubic element experiences a significant transformation when exposed solely to shearing stress. Its shape alters from a perfect cube into a rhomboid, clearly demonstrating the effect of shearing strain. The degree of this strain is considered positive if it reduces the angle between the...
1.4K
Measurements of Strain01:27

Measurements of Strain

2.6K
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
2.6K
Strain Energy01:13

Strain Energy

999
Strain energy is a fundamental concept in the field of materials science and structural engineering, describing the energy absorbed by a material or structure when it is deformed under load.
Consider a rod that is fixed at one end and subjected to an axial force at the free end. This axial force induces stress within the rod, leading to its elongation. As the axial force increases, so does the elongation of the rod, illustrating a direct relationship between the force applied and the resulting...
999
Problem Solving on Stress and Strain01:22

Problem Solving on Stress and Strain

2.0K
Stress is a quantity that describes the magnitude of a force that causes deformation, generally defined as internal force per unit area. When forces pull on an object and cause its elongation, like the stretching of an elastic band, it is called tensile stress. When forces cause the compression of an object, it is known as compressive stress. When an object is being squeezed uniformly from all sides, like a submarine in the depths of the ocean, we call this kind of stress bulk stress (or volume...
2.0K
Stress-Strain Diagram01:10

Stress-Strain Diagram

2.4K
A stress-strain diagram is a crucial tool that graphically displays a material's mechanical characteristics. This diagram is derived from a tensile test performed on a carefully prepared cylindrical specimen. The specimen has two gauge marks inscribed on its central part, and the distance between these marks is known as the gauge length. The cylindrical specimen is placed in a testing machine, which applies an increasing centric load. As this load grows, so does the gauge length. This...
2.4K

You might also read

Related Articles

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

Sort by
Same author

Strain-Microstructure-Optoelectronic Inter-Relationship toward Engineering Mechano-Optoelectronic Conjugated Polymer Thin Films.

Polymers·2021
Same author

Instabilities of Thin Films on a Compliant Substrate: Direct Numerical Simulations from Surface Wrinkling to Global Buckling.

Scientific reports·2020
See all related articles

Related Experiment Video

Updated: Feb 3, 2026

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
09:59

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Published on: June 23, 2018

8.2K

Corrugated Photoactive Thin Films for Flexible Strain Sensor.

Donghyeon Ryu1, Alfred Mongare2

  • 1Department of Mechanical Engineering, New Mexico Tech; Socorro, 87801, NM, USA. donghyeon.ryu@nmt.edu.

Materials (Basel, Switzerland)
|October 17, 2018
PubMed
Summary

This study developed a mechanically resilient flexible strain sensor using corrugated poly(3-hexylthiophene) (P3HT) and PEDOT:PSS thin films. The novel design enhances strain sensing range and durability for electronic applications.

Keywords:
P3HTPEDOT:PSSflexible sensorphotoactive self-sensing thin filmsstrain sensor

More Related Videos

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor
07:17

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor

Published on: August 3, 2018

6.4K
Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

5.4K

Related Experiment Videos

Last Updated: Feb 3, 2026

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
09:59

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Published on: June 23, 2018

8.2K
Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor
07:17

Measurement of Dynamic Force Acted on Water Strider Leg Jumping Upward by the PVDF Film Sensor

Published on: August 3, 2018

6.4K
Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

5.4K

Area of Science:

  • Materials Science
  • Flexible Electronics
  • Nanotechnology

Background:

  • Previous poly(3-hexylthiophene) (P3HT) strain sensors had limited mechanical resilience.
  • Non-corrugated thin films are prone to brittleness, restricting performance.
  • Direct current (DC) voltage generation in P3HT varies with tensile strain.

Purpose of the Study:

  • To design a mechanically resilient flexible strain sensor.
  • To improve the strain sensing range and durability of P3HT-based sensors.
  • To investigate the effect of corrugation on thin film properties for strain sensing.

Main Methods:

  • Fabrication of corrugated bilayer thin films using P3HT and PEDOT:PSS.
  • Inducing corrugation via substrate pre-strain and release.
  • Characterization of optical and electrical properties under varying pre-strain and film thickness.
  • Investigating the strain effects on corrugated thin film properties.

Main Results:

  • Corrugated thin films exhibit altered optical and electronic properties compared to non-corrugated films.
  • Optimized design guidelines for flexible strain sensors were established.
  • The developed flexible strain sensor demonstrated a tensile strain sensing range up to 5%.
  • A maximum gauge factor of approximately 7 was achieved at frequencies up to 15 Hz.

Conclusions:

  • Corrugation significantly enhances the mechanical resilience and strain sensing capabilities of P3HT:PEDOT:PSS thin films.
  • The developed flexible strain sensor offers improved performance for various electronic applications.
  • The study provides a viable pathway for creating robust and sensitive flexible electronic devices.