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

Development of Analytical Methods01:21

Development of Analytical Methods

2.4K
An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
2.4K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.7K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.7K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.5K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
1.5K
Analyte Adsorption and Distribution01:09

Analyte Adsorption and Distribution

2.8K
In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
2.8K
Jung's Analytical Theory01:23

Jung's Analytical Theory

1.1K
Carl Jung, a Swiss psychiatrist and former follower of Freud, eventually broke away from Freud's ideas to create his framework, analytical psychology. This approach emphasizes achieving a balance between the conscious and unconscious aspects of the mind and reconciling various experiences within an individual's personality. Jung believed that this process, which typically unfolds in the latter part of life, involves an ongoing journey of recognizing and incorporating unconscious...
1.1K
G-protein Coupled Receptors01:21

G-protein Coupled Receptors

132.2K
G-protein coupled receptors are ligand binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that transverses the cell membrane seven times creating intracellular and extracellular loops. The extracellular loops create a ligand specific pocket which binds to neurotransmitters or hormones. The intracellular loops holds onto the G-protein.
132.2K

You might also read

Related Articles

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

Sort by
Same author

Spectrofluorimetric method for determination of the skin depigmenting substance - 4-hexylresorcinol - in cosmetic products.

Analytical methods : advancing methods and applications·2026
Same author

Exploiting a Microdisk Array Device for Enhanced Microextraction of Indomethacin from Human Urine.

ACS omega·2026
Same author

Editorial of Topic Issue "Chromatography-Mass Spectrometry Analysis in Biomedical Research and Clinical Laboratory".

Molecules (Basel, Switzerland)·2026
Same author

Efficient HPLC-ELSD analysis of sodium and phosphate in aripiprazole extended-release injectable suspensions using trimodal column technology.

RSC advances·2025
Same author

Sub-zero temperature biosolvent-assisted liquid-liquid microextraction for quantifying propranolol and carvedilol in human urine using HPLC-UV: greenness profile evaluation.

RSC advances·2025
Same author

Applications of Hydrophilic Interaction Chromatography in Pharmaceutical Impurity Profiling: A Comprehensive Review of Two Decades.

Molecules (Basel, Switzerland)·2025

Related Experiment Video

Updated: Feb 14, 2026

Fluorescent Paper Strips for the Detection of Diesel Adulteration with Smartphone Read-out
07:10

Fluorescent Paper Strips for the Detection of Diesel Adulteration with Smartphone Read-out

Published on: November 9, 2018

9.8K

Paper-Based Analytical Devices Coupled with Fluorescence Detection and Smartphone Imaging: Advances and Applications.

Constantinos K Zacharis1

  • 1Laboratory of Pharmaceutical Analysis, Department of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.

Sensors (Basel, Switzerland)
|February 13, 2026
PubMed
Summary

Paper-based analytical devices combined with smartphone fluorescence imaging offer sensitive, rapid, and portable on-site detection. This review covers advancements in materials, design, and smartphone integration for various applications.

Keywords:
determinationfluorescencepaper-based analytical devicesmartphone detection

More Related Videos

Author Spotlight: Development of a Smartphone-Enhanced Paper-Based Device for Rapid Dengue NS1 Detection
06:00

Author Spotlight: Development of a Smartphone-Enhanced Paper-Based Device for Rapid Dengue NS1 Detection

Published on: January 26, 2024

2.1K
Thermal Measurement Techniques in Analytical Microfluidic Devices
08:29

Thermal Measurement Techniques in Analytical Microfluidic Devices

Published on: June 3, 2015

10.1K

Related Experiment Videos

Last Updated: Feb 14, 2026

Fluorescent Paper Strips for the Detection of Diesel Adulteration with Smartphone Read-out
07:10

Fluorescent Paper Strips for the Detection of Diesel Adulteration with Smartphone Read-out

Published on: November 9, 2018

9.8K
Author Spotlight: Development of a Smartphone-Enhanced Paper-Based Device for Rapid Dengue NS1 Detection
06:00

Author Spotlight: Development of a Smartphone-Enhanced Paper-Based Device for Rapid Dengue NS1 Detection

Published on: January 26, 2024

2.1K
Thermal Measurement Techniques in Analytical Microfluidic Devices
08:29

Thermal Measurement Techniques in Analytical Microfluidic Devices

Published on: June 3, 2015

10.1K

Area of Science:

  • Analytical Chemistry
  • Biotechnology
  • Materials Science

Background:

  • Paper-based analytical devices (PADs) provide cost-effective, on-site analysis.
  • Integrating fluorescence detection with smartphone imaging enhances PAD performance and portability.

Purpose of the Study:

  • To review recent advancements in paper-based fluorescence sensing technologies.
  • To highlight design principles, materials, and detection strategies.
  • To explore the role of smartphones in detection and data processing.

Main Methods:

  • Review of literature on paper-based fluorescence sensing.
  • Focus on nanomaterials (quantum dots, carbon-based fluorophores) for enhanced sensitivity and selectivity.
  • Exploration of smartphone-based optical detection and image analysis techniques.

Main Results:

  • Recent advancements have significantly improved sensitivity, selectivity, and portability of PADs.
  • Nanomaterials and quantum dots are key to enhanced fluorescence detection.
  • Smartphone integration enables user-friendly quantification and data processing.

Conclusions:

  • Paper-based fluorescence sensors integrated with smartphones represent a powerful tool for on-site analysis.
  • Continued innovation in materials and smartphone-based methods will expand applications in food, bioanalytical, and environmental monitoring.