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

Stress Concentrations01:24

Stress Concentrations

Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller width...
Stress: General Loading Conditions01:15

Stress: General Loading Conditions

To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
Plastic Behavior01:21

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.

You might also read

Related Articles

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

Sort by
Same author

Evaluation of cold resistance in pear (<i>Pyrus</i> L.) germplasms: integrating physiological and biochemical responses with anatomical traits under low temperature stress.

PeerJ·2026
Same author

A Self-Powered Dressing Based on a Zn-Mo Galvanic Cell for Accelerated Wound Repair.

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

Integrative network pharmacology and in vitro/in vivo validation reveal the protective effects of sotetsuflavone against osteoarthritis associated with PI3K/Akt/NF-κB signaling.

Scientific reports·2026
Same author

Correction to "Conductive Microneedle Patch with Electricity-Triggered Drug Release Performance for Atopic Dermatitis Treatment".

ACS applied materials & interfaces·2026
Same author

A high-resolution electrostatically actuated MEMS Fabry-Pérot tunable filter for LWIR imaging and sensing applications.

Microsystems & nanoengineering·2026
Same author

Rheological Behavior and Aging Resistance of SBS/Lignin Composite Modified Asphalt.

Polymers·2026
Same journal

Nanozyme-Reinforced miR-197-3p Delivery Resets Metabolic and Senescence Pathways to Rejuvenate Osteoarthritic Cartilage.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Correction to "Nanoparticles (NPs)-Meditated LncRNA AFAP1-AS1 Silencing to Block Wnt/β-Catenin Signaling Pathway for Synergistic Reversal of Radioresistance and Effective Cancer Radiotherapy".

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Femtosecond-Laser Nanocavitation Regenerates SERS-Active Plasmonic Nanogaps for Longitudinal Molecular Sensing at Biointerfaces.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Correction to "Bioinspired Polyacrylic Acid-Based Dressing: Wet Adhesive, Self-Healing, and Multi-Biofunctional Coacervate Hydrogel Accelerates Wound Healing".

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Non-Line-of-Sight Passive Ammonia Sensor Loaded With MXene/In<sub>2</sub>O<sub>3</sub> Composites for Agricultural Products Quality Deterioration Detection.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same journal

Cerium Nanoparticle-Mediated Inhibition of the NSUN2/m<sup>5</sup>C Axis Suppresses Synovial Aggression in Rheumatoid Arthritis.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
See all related articles

Related Experiment Video

Updated: May 13, 2026

Postproduction Processing of Electrospun Fibres for Tissue Engineering
15:52

Postproduction Processing of Electrospun Fibres for Tissue Engineering

Published on: August 9, 2012

Topologically Structured PLLA Fibers With Stress Concentration Effects for Health Monitoring.

Longfei Li1,2,3, Juwei Yang1,4, Yiqian Wang1

  • 1Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|May 11, 2026
PubMed
Summary
This summary is machine-generated.

Researchers enhanced the piezoelectric performance of Poly(L-lactic acid) (PLLA) nanofibers by incorporating hydroxyapatite (HAp) nanoparticles. This innovation boosts potential for self-powered flexible electronics in health monitoring and tissue engineering applications.

Keywords:
biomedical engineeringflexible electronic devicespiezoelectric enhancement strategypoly(L‐lactic acid) fiberstress concentration

More Related Videos

A Method to Study the Correlation Between Local Collagen Structure and Mechanical Properties of Atherosclerotic Plaque Fibrous Tissue
13:45

A Method to Study the Correlation Between Local Collagen Structure and Mechanical Properties of Atherosclerotic Plaque Fibrous Tissue

Published on: November 11, 2022

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
09:38

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Published on: November 7, 2016

Related Experiment Videos

Last Updated: May 13, 2026

Postproduction Processing of Electrospun Fibres for Tissue Engineering
15:52

Postproduction Processing of Electrospun Fibres for Tissue Engineering

Published on: August 9, 2012

A Method to Study the Correlation Between Local Collagen Structure and Mechanical Properties of Atherosclerotic Plaque Fibrous Tissue
13:45

A Method to Study the Correlation Between Local Collagen Structure and Mechanical Properties of Atherosclerotic Plaque Fibrous Tissue

Published on: November 11, 2022

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
09:38

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Published on: November 7, 2016

Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Nanotechnology

Background:

  • Flexible electronic devices require materials with high piezoelectric performance.
  • Poly(L-lactic acid) (PLLA) nanofiber membranes show promise for self-powered health monitoring and tissue repair.
  • The intrinsic piezoelectric performance of PLLA nanofibers is currently insufficient for practical applications.

Purpose of the Study:

  • To enhance the piezoelectric properties of PLLA nanofiber membranes.
  • To explore the use of hydroxyapatite (HAp) for improving PLLA crystallinity and piezoelectric output.
  • To develop PLLA-HAp/PLLA composite fiber membranes with amplified piezoelectric effects.

Main Methods:

  • A multi-path strategy involving crystallography and hierarchical design of PLLA fibers.
  • Incorporation of high-aspect-ratio needle-like hydroxyapatite (HAp) into PLLA.
  • Construction of PLLA-HAp/PLLA composite fiber membranes with specific topological structures.

Main Results:

  • Incorporating HAp optimized PLLA crystallinity and enhanced piezoelectric output.
  • The PLLA-HAp/PLLA composite membranes showed significantly improved piezoelectric performance, with output 6-14 times higher than pure PLLA fibers.
  • The optimized membranes successfully monitored human physiological activities, including joint movements and heart rates.

Conclusions:

  • The developed piezoelectric enhancement strategy offers a new approach for high-performance piezoelectric devices.
  • The PLLA-HAp composite fiber membranes show great potential for self-powered health monitoring and tissue engineering.
  • Hierarchical design and material composite strategies are effective for advancing piezoelectric materials.