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

The Sense of Self: Reflected Self-Appraisal and Social Comparison02:57

The Sense of Self: Reflected Self-Appraisal and Social Comparison

56.1K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.1K
Introduction to Special Senses01:26

Introduction to Special Senses

7.6K
Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
7.6K
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

806
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
806
Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

1.6K
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
1.6K
Exercise and Muscle Performance01:27

Exercise and Muscle Performance

2.4K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
2.4K
Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

631
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
631

You might also read

Related Articles

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

Sort by
Same author

Ultrafast Self-Assembly of Zeolitic Imidazolate Framework-8 Enables Antibody Orientation for Ultrasensitive Lateral Flow Immunoassays.

ACS nano·2026
Same author

Robust and Sensitive Electrochemical Biosensor Based on Cascade Interface Engineering for piRNA Detection in Breast Cancer Diagnosis.

ACS sensors·2026
Same author

ACE Inhibitory Peptide Tailored Preparation, Screening, and Interaction Mechanism via Computer-Assisted Experimental Studies.

Journal of agricultural and food chemistry·2026
Same author

Programmable DNA hydrogels for dual-mode PD-L1 suppression via polyvalent LYTAC mimics and transcriptional silencing.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Dancing on Electrodes: Wearable Continuous Multiplexed Monitoring for Daily Diabetic Nephropathy Management.

ACS nano·2026
Same author

On-demand formation of ultrathin liquid metal hydrogel tattoos for conformal and low-impedance bioelectronics.

Science advances·2026

Related Experiment Video

Updated: Feb 5, 2026

Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles
07:58

Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles

Published on: November 14, 2018

8.8K

Hydrogels Incorporating Au@Polydopamine Nanoparticles: Robust Performance for Optical Sensing.

Jiangjiang Zhang1,2, Lei Mou1,3, Xingyu Jiang1,2

  • 1Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Number 11 Zhongguancun Beiyitiao , Beijing 100190 , China.

Analytical Chemistry
|September 8, 2018
PubMed
Summary

This study introduces a novel colorimetric stimuli-responsive hydrogel (SRhG) using polydopamine-coated gold nanoparticles. This stable hydrogel enables sensitive optical detection of analytes like biothiols and enzyme activity.

More Related Videos

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

23.0K
Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
09:39

Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications

Published on: February 7, 2021

8.9K

Related Experiment Videos

Last Updated: Feb 5, 2026

Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles
07:58

Bio-inspired Polydopamine Surface Modification of Nanodiamonds and Its Reduction of Silver Nanoparticles

Published on: November 14, 2018

8.8K
Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

23.0K
Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
09:39

Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications

Published on: February 7, 2021

8.9K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Analytical Chemistry

Background:

  • Stimuli-responsive hydrogels (SRhG) are widely used but often rely on structural changes like swelling or collapse.
  • Existing hydrogel sensors can lack stability and suffer from interference in solution-based sensing.

Purpose of the Study:

  • To develop a simple, convenient, and stable colorimetric stimuli-responsive hydrogel (SRhG).
  • To utilize polydopamine-coated gold nanoparticles (Au@PDA NPs) for enhanced optical sensing capabilities.

Main Methods:

  • Fabrication of an agarose hydrogel embedding Au@PDA NPs with a core-shell structure.
  • In situ formation of silver nanoparticles (Ag NPs) on Au@PDA NPs surfaces in the presence of silver ions.
  • Utilizing the shift in localized surface plasmon resonance (LSPR) absorption for colorimetric detection.

Main Results:

  • The developed hydrogel exhibits a core-satellites structure (Ag_Au@PDA NPs) leading to a visible color change.
  • The solid-state sensing platform demonstrated enhanced stability and anti-interference compared to solution-phase methods.
  • Successful application in optical sensing for biothiol detection and acetylcholinesterase activity assays.

Conclusions:

  • The Au@PDA NPs hydrogel offers a robust and sensitive platform for optical sensing.
  • This novel SRhG shows significant potential for various analytical applications, including diagnostics and environmental monitoring.
  • The material's design facilitates high sensitivity and selectivity in detecting target analytes.