Topic: SEM

Why hi-tech textile engineering requires SEM analysis

By Luigi Raspolini - Sep 28, 2017

It’s been a long time since the textile industry relied exclusively on natural fibers. Over the decades, synthetic fibers have proven to be cheaper, easier to produce and often perform better. At the same time, chemical treatments have been developed that improve the smoothness and the resistance of both natural and synthetic fibers, which has resulted in higher quality products. Read this blog for more information on how electron microscopy can play a fundamental role in this development process.

It’s been a long time since the textile industry relied exclusively on natural fibers. Over the decades, synthetic fibers have proven to be cheaper, easier to produce and often perform better. At the same time, chemical treatments have been developed that improve the smoothness and the resistance of both natural and synthetic fibers, which has resulted in higher quality products. Read this blog for more information on how electron microscopy can play a fundamental role in this development process.

Read more
Topics: SEM, fibers, textile

Fabrication of silicon microstructures with KOH etching — imaged through SEM

By Marijke Scotuzzi - Sep 14, 2017

Potassium Hydroxide (KOH) etching is an important process in the fabrication of microdevices, and is used to remove material from a silicon wafer. It is possible to selectively etch only certain parts of the wafer, by protecting the rest with a layer of silicon dioxide, or mask. However, the presence of residues gives this technique a critical disadvantage, as it can negatively influence the fabrication process of the device. In this blog, we present a way of taking advantage of the etching residue, using it as a mask for a subsequent etching, in order to fabricate two-layer microstructures. We also provide examples of how these microstructures can be effectively imaged with SEM.

Potassium Hydroxide (KOH) etching is an important process in the fabrication of microdevices, and is used to remove material from a silicon wafer. It is possible to selectively etch only certain parts of the wafer, by protecting the rest with a layer of silicon dioxide, or mask. However, the presence of residues gives this technique a critical disadvantage, as it can negatively influence the fabrication process of the device. In this blog, we present a way of taking advantage of the etching residue, using it as a mask for a subsequent etching, in order to fabricate two-layer microstructures. We also provide examples of how these microstructures can be effectively imaged with SEM.

Read more
Topics: SEM, SEM images

Sample preparation techniques for SEM to neutralize the effect of vacuum

By Luigi Raspolini - Aug 24, 2017

Scanning electron microscopes (SEM) scan the surface of the sample with an electron beam, collecting reflected electrons which carry information about the material the electrons interact with. If gas is in the sample chamber, its atoms interact with the beam, partly deflecting electrons and adding noise to the image. 

This is the reason why vacuum must be achieved in SEM before imaging. But while vacuum is crucial for proper analysis, it can also have a negative effect on certain types of materials. Read this blog to learn how you can neutralize vacuum and keep your samples intact.

Scanning electron microscopes (SEM) scan the surface of the sample with an electron beam, collecting reflected electrons which carry information about the material the electrons interact with. If gas is in the sample chamber, its atoms interact with the beam, partly deflecting electrons and adding noise to the image. 

This is the reason why vacuum must be achieved in SEM before imaging. But while vacuum is crucial for proper analysis, it can also have a negative effect on certain types of materials. Read this blog to learn how you can neutralize vacuum and keep your samples intact.

Read more

Expert sample preparation techniques for SEM

By Luigi Raspolini - Aug 17, 2017

When using a scanning electron microscope (SEM) for the first time, you might have doubts about what can be imaged. You might also struggle to get the image quality you were expecting. Luckily, you can easily improve your results by following the simple yet powerful sample preparation techniques for SEM in this blog. Read on! 

When using a scanning electron microscope (SEM) for the first time, you might have doubts about what can be imaged. You might also struggle to get the image quality you were expecting. Luckily, you can easily improve your results by following the simple yet powerful sample preparation techniques for SEM in this blog. Read on! 

Read more

SEM sample tilting: how to keep the area of interest within the field of view

By Luigi Raspolini - Aug 10, 2017

Certain samples are tricky to image. Sometimes, even the best sample preparation will be of no help in finding the results you need. Surface roughness and features on top of the sample might hide the specific area of interest, which could contain crucial information about surface defects or characteristics of the imaged material. In cases like this, you need a new point of view. Read this blog to discover how you can get just that.

Certain samples are tricky to image. Sometimes, even the best sample preparation will be of no help in finding the results you need. Surface roughness and features on top of the sample might hide the specific area of interest, which could contain crucial information about surface defects or characteristics of the imaged material. In cases like this, you need a new point of view. Read this blog to discover how you can get just that.

Read more
Topics: SEM, tilting

SEM: types of electrons, their detection and the information they provide

By Antonis Nanakoudis - Jun 29, 2017

Electron microscopes are very versatile instruments, which can provide different types of information depending on the user’s needs. In this blog we will describe the different types of electrons that are produced in a SEM, how they are detected and the type of information that they can provide. 

Electron microscopes are very versatile instruments, which can provide different types of information depending on the user’s needs. In this blog we will describe the different types of electrons that are produced in a SEM, how they are detected and the type of information that they can provide. 

Read more

Imaging fibers with a SEM: how to obtain a flawless quality analysis

By Marijke Scotuzzi - Jun 22, 2017

In our daily life, we make use of a large amount of objects and devices that are produced from fibers. Fibers are usually imaged in a scanning electron microscope (SEM), which provides high-resolution images, elemental analysis, and the possibility of automatically measuring thousands of fibers in mere minutes. But in some cases, imaging fibers with a SEM also presents challenges, as the nature of some fibers might compromise the quality of your analysis. With this in mind, this blog describes how you can obtain a high analysis quality through proper SEM configuration and sample preparation. 

In our daily life, we make use of a large amount of objects and devices that are produced from fibers. Fibers are usually imaged in a scanning electron microscope (SEM), which provides high-resolution images, elemental analysis, and the possibility of automatically measuring thousands of fibers in mere minutes. But in some cases, imaging fibers with a SEM also presents challenges, as the nature of some fibers might compromise the quality of your analysis. With this in mind, this blog describes how you can obtain a high analysis quality through proper SEM configuration and sample preparation. 

Read more

How engineers and researchers can boost polymers properties with SEM

By Luigi Raspolini - Jun 16, 2017

Polymers have many uses and applications: engineered combinations of monomers produce a nearly infinite number of molecules with different properties, which are determined by the chemical composition and structure of the molecule. The form of the molecule has a big influence on how the polymer will behave when exposed to different external forces. In this blog, you’ll find practical examples of how Scanning Electron Microscopes (SEMs) can provide unexpected results.

Polymers have many uses and applications: engineered combinations of monomers produce a nearly infinite number of molecules with different properties, which are determined by the chemical composition and structure of the molecule. The form of the molecule has a big influence on how the polymer will behave when exposed to different external forces. In this blog, you’ll find practical examples of how Scanning Electron Microscopes (SEMs) can provide unexpected results.

Read more

How SEM helps discover suitable corrosion inhibitors

By Dr. Jasmin Zahn - Jun 12, 2017

Many industries would benefit from the inhibition of corrosion in metals. In the materials science field, scientists are therefore exploring ways to prevent or reduce corrosion. Many studies looking for suitable corrosion inhibitors have been carried out.

However, most of the inhibitors discovered and developed during those studies were synthetic chemicals, which are very expensive, and hazardous to the environment. Due to the characteristics of these chemicals, studies were carried out to investigate and analyze natural products that could be used as an anti-corrosion agent. SEM technology helped conduct these studies in an effective manner, something we will describe further in this article.

Many industries would benefit from the inhibition of corrosion in metals. In the materials science field, scientists are therefore exploring ways to prevent or reduce corrosion. Many studies looking for suitable corrosion inhibitors have been carried out.

However, most of the inhibitors discovered and developed during those studies were synthetic chemicals, which are very expensive, and hazardous to the environment. Due to the characteristics of these chemicals, studies were carried out to investigate and analyze natural products that could be used as an anti-corrosion agent. SEM technology helped conduct these studies in an effective manner, something we will describe further in this article.

Read more

What is SEM? SEM technology explained

By Antonis Nanakoudis - Jun 1, 2017

Scanning electron microscopy (SEM) has become a powerful and versatile tool for material characterization. This is especially so in recent years, due to the continuous shrinking of the dimension of materials used in various applications. In this blog, we describe the main working principles of a SEM instrument.

Scanning electron microscopy (SEM) has become a powerful and versatile tool for material characterization. This is especially so in recent years, due to the continuous shrinking of the dimension of materials used in various applications. In this blog, we describe the main working principles of a SEM instrument.

Read more

Press Room | Privacy Policy | Disclaimer | Sitemap