GB/T 34831-2017 in English

VALID

Nanotechnologies-Electron microscopy imaging of noble metal nanoparticles- High angle annular dark field imaging method

Issued on:2017-11-01
Implemented on:2018-05-01
File Format:PDF
Delivery:Within 1 day

Price(USD)： $176.00
$171.00

Standard No:	GB/T 34831-2017
Document status:	VALID
Title in English:	Nanotechnologies-Electron microscopy imaging of noble metal nanoparticles- High angle annular dark field imaging method
Title in Chinese:	纳米技术贵金属纳米颗粒电子显微镜成像高角环形暗场法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Within 1 day
Issued on:	2017-11-01
Implemented on:	2018-05-01
Chinese Classification:	N33-Electron optics and other physical optics instrument
Professional Classification:	GB-National Standard
Related Keywords:	annular dark field imaging annular dark field high-angle annular dark field accessory + high-angle annular dark field detector gb/t nanotechnologies-electron microscopy imaging
Related Topics:	gold nanoparticles organic nanoparticles UV light of gold nanoparticles Gold Nanoparticle Size tio2 nanoparticles field electron microscope gold nanowavelength gold nanoparticles UV gold nanoparticles UV high-efficiency electron microscopy Dark field imaging Near field imaging Palladium Nanoparticles+ Gold Nanoparticle Technology Nano tio2 particles Nanobeam annular dark field annular dark field palladium nanoparticles field electron microscope Gold nanoimaging field electron microscope Nanoparticle Tracer Nanoparticle Tracer Gold Nanoparticles UV isotropic nanoparticles nanoparticle infrared palladium nanoparticles UV gold nanoparticles Gold Nanoparticles Size UV UV light of gold nanoparticles Gold Nanoparticle Size nanoparticle toxin gold nanoparticles Gold nanoparticles glow silver nanoparticles UV Nanoparticles glow Angle Ring + Field Nano Inspection Microscope UV nanoparticles metal nanocluster High Angle Annular Dark Field Gold Nanoparticles UV and Particle Size Gold Nanoparticles UV Gold Nanoparticles UV microscope dark field gold nano environment dark field electron microscope Nano Inspection Microscope metal nano Nanoparticle sample preparation Gold Nanoparticles+ Nano gold spectrum gold nanoparticles Nanogold Synthesis Nano gold particle size UV UV nano metal particle imaging Gold Nanoparticles UV Nanotechnology Nanoparticle Size Measurement Atomic Force Microscopy Granular Dark Field Imaging imaging particles ring electron microscope Gold Nanoparticle Size and UV Infrared Gold Nanoparticles Infrared Gold Nanoparticles Nano microscope microscope dark field nano electron microscope UV gold nanoparticles Luminescent gold nanoparticles Electron Microscopy Three Classes High Angle Annular Dark Field Phase Electron Microscopy Imaging Gold Nanoparticle UV Spectroscopy Gold Nanoparticle Size gold nanoparticles infrared Electron Microscopy Gold Particles electronic imaging technology Nanogold Flow Cytometry Gold Nanoparticles UV Gold particle size 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microns UV Peak of Gold Nanoparticles Nanogold and monatomic gold Metal Internal Imaging Luminescence of gold nanoparticles Nano gold particle size Ten 8 Electron Particles imaging technology Metal Internal Imaging near-field microscopy Why Gold Nanoparticles General Nanoparticle Size Carbon Nanotube Electron Microscopy Gold Nanometer nanometer and nanometer field electron microscopy Nanoparticles nano metal clusters gold nanocoupling Electron Microscopy Nanoparticles microns and millimeters Microscope cm Gold Nanoparticle Spectroscopy Near Field Microscopy Dark field imaging Near field imaging Nanogold 2017 particle dark field nanoparticle tracer Nanoparticle Dispersant Generation Nano Electron Microscopy Nano Particles Microscopy Particles electric field imaging Nanoparticle Swarm Technology The Future of Precious Metal Nanoparticles Noble Metal Nanoparticles Noble Metal Nanoparticles Granular Nanozyme Multiple Nano Precious Metals micro nano core How to Nanoscale Precious Metals How to detect nanoparticles Nano-multiple precious metals Noble metal nano The imaging must be dark around imaging tracer particles Electron Microscopy Titanium Particles Noble Metal Palladium Nano Noble metal nano Nanoparticle Generator gold nanoparticle tracer Particle Electron Microscopy gold nanoparticle tracer Why is the center of the microscope field of view dark? Atomic Force Microscopy Nanosheets Environmental Microscopy Nano metal particles flow particle imaging GBT34831 GB/T 34831-2017 Coulter Nanoparticles ultra high voltage electron microscope High angle ring dark field scanning transmission electron microscopy High angle annular dark field image - scanning transmission electron microscope nanogram microbeam electron microscopy Applicable scenarios for electron microscopes Calcium ion imaging technology near field imaging lens Chemiluminescence of magnetic nanoparticles Nano electrospinning Nanoparticle size potentiometer use Nanoparticle PDI Detection of micron-sized particles in metals Nanoparticle size analyzer confirmation method Select specific nanoparticles What are the methods for separating nanoparticles? Nanoparticle dispersion method Nanoparticle contact angle measurement method Dispersion method of nanoparticles Nanoparticle structure analysis methods How to adjust the microscope image when it is too dark

《GB/T 34831-2017纳米技术贵金属纳米颗粒电子显微镜成像高角环形暗场法》由TC279（全国纳米技术标准化技术委员会）归口，主管部门为中国科学院。

Introduction

1. Background and significance of standard formulation

Due to their unique physical and chemical properties, precious metal nanoparticles have important application value in catalysis, energy, optics and other fields. However, their characterization technology has always been a research difficulty. As an advanced microscopy technology, high-angle annular dark field imaging can effectively distinguish precious metal particles from their carriers, providing strong support for the characterization of nanomaterials.

2. Principle of high-angle annular dark field imaging

High-angle annular dark field imaging (HAADF) uses an annular detector to collect high-angle scattered electrons, and the image contrast is approximately proportional to the square of the atomic number. This technology is particularly suitable for the characterization of precious metal nanoparticles, with atomic-level resolution and high sensitivity.

3. Comparison of standard frameworks

Standard dimensions	Requirements of this standard	Reference requirements	Industry universality
Instruments and equipment	Field emission electron microscope + scanning transmission accessory + high-angle annular dark field detector	GB/T 19619	Widely applicable
Imaging technology	High-angle annular dark field imaging (HAADF)	Nanoprobe mode + 0.2nm beam spot size	High resolution requirements
Sample preparation	Ultrasonic dispersion + carbon support film sample preparation	Dispersants such as water and ethanol	Standardized process

4. Implementation suggestions

Case study: In palladium/zinc oxide (Pd/ZnO) composite materials, high-angle annular dark field imaging clearly distinguishes the precious metal particles from the carrier. This method is suitable for the characterization of micron-sized particles and nanoparticles.

Operational suggestions: Before the experiment, the instrument status needs to be checked to ensure that the condenser axis and astigmatism are accurately adjusted. Contamination should be avoided during sample preparation, and the purity requirements of the dispersant should be guaranteed.

More samples: JC/T 2453-2018 QC/T 942-2021 GB 50021-2001(2009)

Sample only — not a preview of GB/T 34831-2017

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