High-Resolution Transmission Electron Microscopy (HRTEM) Imaging

Isotropic etch profiles are crucial for semiconductors. This case study done by Infinitalab reports highly accurate and statistically significant measurement of sub-nanometer level thickness variations to evaluate the etch profile uniformity of atomic layer deposited (ALD) films, by HRTEM imaging.

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High-Resolution Transmission Electron Microscopy (HRTEM) Imaging

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Overview
Scope, Applications, and Benefits
Test Process
Specifications
Instrumentation
Results and Deliverables

Overview

High-Resolution Transmission Electron Microscopy (HRTEM) is a powerful characterization tool that uses a high-energy electron beam to produce images of a material’s internal structure at the atomic scale. With a resolution below 1 Ångström, HRTEM enables direct observation of crystal lattice planes, grain boundaries, defects, interfaces, and nanostructural features that cannot be observed by any other imaging tool. When coupled with other techniques such as SAED, STEM, EDS, and EELS, it gives a comprehensive understanding of both structural and compositional properties at the nanoscale.

HRTEM is a powerful tool in the analysis and characterization of semiconductors, advanced ceramics, metals, nanoparticles, catalysts, films, and biomaterials. It finds application in failure analysis, material development, quality verification, and research in which understanding the material’s atomic structure is directly related to macroscopic properties and reliability.

Scope, Applications, and Benefits

Scope

HRTEM covers atomic to nanoscale structural characterisation of crystalline and amorphous materials across a broad range of industrial and research applications.

Atomic-resolution imaging of crystal lattices, defects, dislocations, and grain boundaries
Phase identification and crystal structure determination via selected area electron diffraction (SAED)
Elemental mapping and compositional analysis using EDS and EELS
Nanoparticle size, morphology, and crystallinity characterisation
Thin film layer thickness, interface quality, and epitaxial alignment assessment
Applicable to metals, ceramics, semiconductors, polymers, catalysts, and biological specimens

Applications

Nanomaterials and nanotechnology research
Semiconductor and electronic materials
Metallurgy and alloy analysis
Polymer nanocomposites
Failure analysis and defect investigation

Benefits

Atomic-level resolution imaging
Direct visualization of lattice structures
Identification of nanoscale defects
Supports advanced material development
Enhances understanding of structure–property relationships

Test Process

Specimen Preparation

Sample thinned to electron transparency (<100 nm) by FIB, ion milling, or ultramicrotomy.

Instrument Setup & Alignment

Electron beam aligned, accelerating voltage set, and specimen positioned at eucentric height.

Imaging & Data Acquisition

HRTEM images, SAED patterns, STEM maps, and EDS/EELS spectra acquired from regions of interest.

Analysis & Reporting

Images processed; lattice spacings, phases, and compositional data interpreted and documented.

Technical Specifications

Parameter	Details
Technique Type	Transmission Electron Microscopy (High-Resolution Mode)
Resolution	Up to ~0.1–0.2 nm (atomic scale)
Sample Thickness	Typically below 100 nm
Accelerating Voltage	80 kV to 300 kV (or higher)
Magnification Range	Up to millions of times
Analyzed Features	Crystal structure, lattice fringes, defects, grain boundaries
Environment	High vacuum
Output	High-resolution images and diffraction patterns

Instrumentation Used for Testing

High-Resolution Transmission Electron Microscope (HRTEM)
Electron Gun (Field Emission Source)
Sample Preparation Equipment (Ion milling, ultramicrotome)
Vacuum System
Image Processing Software

Results and Deliverables

Atomic-scale images of materials
Lattice structure and crystallographic analysis
Defect and dislocation identification
Grain boundary and phase analysis
Detailed microscopy report

Why Choose Infinita Lab for High-Resolution Transmission Electron Microscopy?

With Infinita Lab (www.infinitalab.com), you are guaranteed a Nationwide Network of Accredited Laboratories spread across the USA, the best Consultants from around the world, Convenient Sample Pick-Up and Delivery, and Fast Turnaround Time.

Our team understands the stakes and subtleties of every test. Whether you’re validating a new Product, de-risking a prototype, or navigating complex compliance requirements, our specialists guide the process with rigor and clarity.

Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote

Frequently Asked Questions

HRTEM is an advanced imaging technique that uses electron beams to visualize atomic structure in materials at a resolution of up to 0.5 Å (0.05 nm). The resolution achieved has already probed details concerning crystal structures, defects, and atomic arrangements.

HRTEM obtains high resolution using the high-energy electron beam (200–300 keV) passing through a thin sample interacting with its atoms. Phase contrast and advanced lens systems

HRTEM provides high-resolution images, but sample preparation can modify the material to some extent. It is also primarily applicable for thin samples and could be better for more extensive bulk materials. Sample damage due to the high-energy electron beam also constitutes another limiting factor.

Yes, while HRTEM can be combined with complementary techniques such as EELS for further chemical and elemental analysis, it allows the study of the material not only at atomic-scale resolution but also its atomic-level chemistry composition.

HRTEM offers detailed structural information necessary for the design and process optimization of advanced materials, especially in nanotechnology, semiconductor research, and materials science. It is helpful for defect imaging, tailoring, and understanding material properties when designing new materials and devices.