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 Experiment Videos

Compositional variations in apatites with respect to preferential ionic extraction.

F J Cuisinier1, R W Glaisher, J C Voegel

  • 1Faculté de Chirurgie Dentaire, INSERM U157, Strasbourg, France.

Ultramicroscopy
|September 1, 1991
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Genomic evaluation of late-term abortion in cows recorded through Dairy Herd Improvement test plans.

JDS communications·2023
Same author

Genomic evaluation of dairy heifer livability.

Journal of dairy science·2021
Same author

Investigating conception rate for beef service sires bred to dairy cows and heifers.

Journal of dairy science·2020
Same author

High-density genome-wide association study for residual feed intake in Holstein dairy cattle.

Journal of dairy science·2019
Same author

Defining the optimal period length and stage of growth or lactation to estimate residual feed intake in dairy cows.

Journal of dairy science·2019
Same author

Arthroscopic soft tissue reconstruction in anterior shoulder instability.

Der Orthopade·2018

Theoretical analysis reveals that detecting ionic losses in apatite (Ca10(PO4)6(OH)2) requires specific electron microscopy apertures. Ultra-thin specimens, crucial for observing these losses, are currently impossible to prepare.

Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Electron Microscopy

Background:

  • Apatitic structures are vital in various fields, including biomaterials and geology.
  • Understanding ionic mobility and loss within these structures is key to predicting material degradation and performance.
  • High-resolution electron microscopy (HREM) offers potential for atomic-level analysis but faces challenges in specimen preparation and interpretation.

Purpose of the Study:

  • To theoretically investigate the feasibility of detecting ionic losses from apatite (Ca10(PO4)6(OH)2) using HREM.
  • To determine the optimal instrumental parameters for visualizing ionic sites and potential structural changes.
  • To assess the practical limitations of current specimen preparation techniques for such analyses.

Main Methods:

Related Experiment Videos

  • Theoretical investigation using linear image analysis.
  • Simulation of HREM image intensities based on varying specimen thickness.
  • Analysis of the relationship between OH- column intensity and specimen thickness.

Main Results:

  • An objective aperture of at least 3.7 nm-1 is theoretically required to resolve key atomic coordinates (CaII, OH-, P).
  • A significant inverse proportionality exists between specimen composition and OH- image intensities for specimens < 2 nm thick.
  • Experimental detection of image intensity variations is possible, but specimen preparation is a major hurdle.

Conclusions:

  • Detecting ionic losses in apatite via HREM is theoretically possible under specific conditions.
  • The preparation of ultra-thin (< 2 nm) apatite specimens required for this analysis is currently not achievable with ultramicrotomy.
  • Further advancements in specimen preparation techniques are necessary to experimentally validate these theoretical findings.