Blog

How SEM helps to detect defects in a 3D-printed object

By Dr. Jasmin Zahn - Apr 26, 2017

3D printing, or additive manufacturing (AM), refers to processes that are used to make 3D printed objects. In order to achieve this, successive layers of material are formed under computer control to create an object. The objects can have almost any shape or geometry and are produced using digital data from a 3D model or other electronic data source. But successive layers formed under computer control can result in structural interruptions that negatively affect the reliability of an object. And these undesirable interruptions should not go undetected; something we discuss in this blog later on. But first, more about 3D printing.

3D printing, or additive manufacturing (AM), refers to processes that are used to make 3D printed objects. In order to achieve this, successive layers of material are formed under computer control to create an object. The objects can have almost any shape or geometry and are produced using digital data from a 3D model or other electronic data source. But successive layers formed under computer control can result in structural interruptions that negatively affect the reliability of an object. And these undesirable interruptions should not go undetected; something we discuss in this blog later on. But first, more about 3D printing.

Read more
Topics: SEM, 3D printing

How knowledge of fiber properties led to the fabrication of a heart valve

By Dr. Jasmin Zahn - Apr 13, 2017

These days, fibers and fiber materials can be found in endless applications. A wide range of these materials is used everywhere from baby diapers to water filters, from applications in asbestos to the automotive industry. Because of their widespread use, a lot of research is carried out to alter fiber materials and enhance their properties. This includes research on components as well as on fiber preparation technologies. One example is the fabrication of a heart valve using differently engineered fibers, which is described in this blog in more detail.

These days, fibers and fiber materials can be found in endless applications. A wide range of these materials is used everywhere from baby diapers to water filters, from applications in asbestos to the automotive industry. Because of their widespread use, a lot of research is carried out to alter fiber materials and enhance their properties. This includes research on components as well as on fiber preparation technologies. One example is the fabrication of a heart valve using differently engineered fibers, which is described in this blog in more detail.

Read more

Sample degradation: what causes it and how to slow down the process

By Ruud Bernsen - Apr 6, 2017

When using a scanning electron microscope (SEM), the electron beam can, over time, permanently alter or degrade the sample that is being observed. This degradation is an unwanted effect as it can alter — or even destroy — the details you want to see, and consequently change your results and conclusions. In this blog, I will explain what can cause the degradation, and how you can slow down the process.

When using a scanning electron microscope (SEM), the electron beam can, over time, permanently alter or degrade the sample that is being observed. This degradation is an unwanted effect as it can alter — or even destroy — the details you want to see, and consequently change your results and conclusions. In this blog, I will explain what can cause the degradation, and how you can slow down the process.

Read more

Vacuum: less pressure for your sample, more stress on you

By Luigi Raspolini - Mar 31, 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, deflecting partly electrons and adding noise to the image. This is the reason why  vacuum must be achieved before imaging.

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, deflecting partly electrons and adding noise to the image. This is the reason why  vacuum must be achieved before imaging.

Read more

Microscopy resolution resolved! A simple explanation for an often misunderstood term

By Luigi Raspolini - Mar 24, 2017

There are different definitions of resolution and they depend on what kind of application you are working on. This blog's intent is to highlight and clarify the differences between the resolution of a LCD screen and the idea of resolution in microscopy.

There are different definitions of resolution and they depend on what kind of application you are working on. This blog's intent is to highlight and clarify the differences between the resolution of a LCD screen and the idea of resolution in microscopy.

Read more

Magnification: is it the key to analyse your samples?

By Luigi Raspolini - Mar 16, 2017

Magnification is a very simple concept, but it sometimes can create confusion because of its own definition. The aim of this blog is to clarify this topic and focus on other parameters which can describe better how big an object is represented.

Magnification is a very simple concept, but it sometimes can create confusion because of its own definition. The aim of this blog is to clarify this topic and focus on other parameters which can describe better how big an object is represented.

Read more

How SEM helps analyze morphologies for nanofibers efficiently

By Dr. Jasmin Zahn - Mar 9, 2017

Most of us may not be aware, but we are constantly surrounded by fibers. From tissue engineering to diapers, high technology filters are part of our daily lives. Many common, inexpensive polymers can be processed on a large scale into flexible materials. But not every produced fibrous material is ready for usage, such as in electronic devices, and further alterations of the material are needed. This blog will give you an insight into how scanning electron microscopy (SEM) can be used in the context of various nano-engineered fibers.

Most of us may not be aware, but we are constantly surrounded by fibers. From tissue engineering to diapers, high technology filters are part of our daily lives. Many common, inexpensive polymers can be processed on a large scale into flexible materials. But not every produced fibrous material is ready for usage, such as in electronic devices, and further alterations of the material are needed. This blog will give you an insight into how scanning electron microscopy (SEM) can be used in the context of various nano-engineered fibers.

Read more

Your sample has a secret — reveal it with a new point of view!

By Luigi Raspolini - Mar 2, 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.

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 more
Topics: SEM, tilting

Why the analysis of nanofibers requires a modern microscopy technique

By Karl Kersten - Feb 23, 2017

Fibers are all around us in many different forms. In most cases we do not notice them because they are used in a product. In case an object is much longer as it is wide we consider it as a fiber. Fibers have specific properties for the product in which they are used. This blog will describe the different ways how these fibers can be classified.

Fibers are all around us in many different forms. In most cases we do not notice them because they are used in a product. In case an object is much longer as it is wide we consider it as a fiber. Fibers have specific properties for the product in which they are used. This blog will describe the different ways how these fibers can be classified.

Read more

The art of sample preparation: tips and tricks to become an expert

By Luigi Raspolini - Feb 16, 2017

When using a scanning electron microscope 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 outcomes by following these simple tricks.

When using a scanning electron microscope 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 outcomes by following these simple tricks.

Read more

Press Room | Privacy Policy | Disclaimer | Sitemap