Topic: scanning-electron-microscope

Additive manufacturing: improving the quality of AM processes through SEM analysis

By Antonis Nanakoudis - May 17, 2018

In a previous blog, we introduced Additive Manufacturing (AM) as a new manufacturing approach and described its key points (you can read the blog here). Additive Manufacturing, also known as 3D printing or rapid prototyping, has attracted the attention of many people and industries around the world due to its unlimited and promising potential. In this blog we will describe how the use of a Scanning Electron Microscope (SEM) can be a powerful tool to monitor and improve the quality of additive manufacturingprocesses.

In a previous blog, we introduced Additive Manufacturing (AM) as a new manufacturing approach and described its key points (you can read the blog here). Additive Manufacturing, also known as 3D printing or rapid prototyping, has attracted the attention of many people and industries around the world due to its unlimited and promising potential. In this blog we will describe how the use of a Scanning Electron Microscope (SEM) can be a powerful tool to monitor and improve the quality of additive manufacturingprocesses.

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Effective asbestos detection with a Scanning Electron Microscope (SEM)

By Luigi Raspolini - May 10, 2018

Resistance to fire, sound absorption, tensile strength and low price caused a boost in asbestos mining activities at the beginning of 19th century.

Already used in the production of asphalt, brake pads, electrical insulators, fireproof suits, technical fabrics and other everyday products, asbestos started its golden century when the Austrian engineer Ludwig Hatschek invented the first asbestos-cement, often mistakenly referred to as Eternit.

The material properties, particularly its lightness and resilience, started a real revolution in the construction engineering and asbestos-cements factories, which immediately emerged all over the world.

Resistance to fire, sound absorption, tensile strength and low price caused a boost in asbestos mining activities at the beginning of 19th century.

Already used in the production of asphalt, brake pads, electrical insulators, fireproof suits, technical fabrics and other everyday products, asbestos started its golden century when the Austrian engineer Ludwig Hatschek invented the first asbestos-cement, often mistakenly referred to as Eternit.

The material properties, particularly its lightness and resilience, started a real revolution in the construction engineering and asbestos-cements factories, which immediately emerged all over the world.

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What is depth of field and how can I optimize it in a scanning electron microscope?

By Luigi Raspolini - May 3, 2018

Imaging with a scanning electron microscope (SEM) consists of taking pictures of small features. So why not consider a comparison with photography? Let’s analyze how similar the behaviors of a SEM and a camera are when it comes to focusing on your subject, and what the exact definition of depth of field is.

Tip: Get a free demo of our Desktop SEM and discover it's capabilities for your research
Request your personal demo

Imaging with a scanning electron microscope (SEM) consists of taking pictures of small features. So why not consider a comparison with photography? Let’s analyze how similar the behaviors of a SEM and a camera are when it comes to focusing on your subject, and what the exact definition of depth of field is.

Tip: Get a free demo of our Desktop SEM and discover it's capabilities for your research
Request your personal demo

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How a desktop SEM saves lab operators a lot of time

By Karl Kersten - Apr 6, 2018

Is it true that as a lab operator, you work under constant time pressure? Do you find it challenging to deliver output quickly? And does it take hard work to maintain your high standard of quality? This blogs explains how a desktop scanning electron microscope (SEM) can be used to increase your research productivity and therefore to save a lot of time.

Is it true that as a lab operator, you work under constant time pressure? Do you find it challenging to deliver output quickly? And does it take hard work to maintain your high standard of quality? This blogs explains how a desktop scanning electron microscope (SEM) can be used to increase your research productivity and therefore to save a lot of time.

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How scanning electron microscopy fuels biomedical research

By Karl Kersten - Mar 15, 2018

Biomedical research is a wide field. It describes an area of science devoted to the study of the processes of life, the prevention and treatment of diseases, and the genetic and environmental factors related to diseases and health. And since the field is so diverse, its range of investigation equipment is too. Scanning electron microscopy (SEM) is one of those types of equipment, and is used to describe tissue or organ structures to gain insights into possible alterations and diseases. To show the variety of topics explored with a SEM — demonstrating its power and vast range of applications — this blog will introduce you to three scientific studies.

 

Biomedical research is a wide field. It describes an area of science devoted to the study of the processes of life, the prevention and treatment of diseases, and the genetic and environmental factors related to diseases and health. And since the field is so diverse, its range of investigation equipment is too. Scanning electron microscopy (SEM) is one of those types of equipment, and is used to describe tissue or organ structures to gain insights into possible alterations and diseases. To show the variety of topics explored with a SEM — demonstrating its power and vast range of applications — this blog will introduce you to three scientific studies.

 

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SEM and TEM: what's the difference?

By Antonis Nanakoudis - Feb 8, 2018

Electron microscopes have emerged as a powerful tool for the characterization of a wide range of materials. Their versatility and extremely high spatial resolution render them a very valuable tool for many applications. The two main types of electron microscopes are the Transmission Electron Microscope (TEM) and the Scanning Electron Microscope (SEM). In this blog we briefly describe their similarities and differences.

Electron microscopes have emerged as a powerful tool for the characterization of a wide range of materials. Their versatility and extremely high spatial resolution render them a very valuable tool for many applications. The two main types of electron microscopes are the Transmission Electron Microscope (TEM) and the Scanning Electron Microscope (SEM). In this blog we briefly describe their similarities and differences.

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Emission stability in SEM thermionic electron sources: CeB6, LaB6 and W filaments

By Karl Kersten - Feb 1, 2018

Typically, desktop scanning electron microscopes (SEM) make use of thermionic sources, from which electrons are emitted when warming up the SEM filament. Although the working principles are the same, different thermionic sources show a different performance. Phenom SEMs are equipped with a CeB6 source because of its higher brightness and longer lifetime. A parameter that plays a crucial role is the emission current stability. How is the CeB6 source performing in terms of stability? What are the engineering smarts that enable the Phenom source to maximize a CeB6 source's potential? This blog answers these questions.

Typically, desktop scanning electron microscopes (SEM) make use of thermionic sources, from which electrons are emitted when warming up the SEM filament. Although the working principles are the same, different thermionic sources show a different performance. Phenom SEMs are equipped with a CeB6 source because of its higher brightness and longer lifetime. A parameter that plays a crucial role is the emission current stability. How is the CeB6 source performing in terms of stability? What are the engineering smarts that enable the Phenom source to maximize a CeB6 source's potential? This blog answers these questions.

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Inside a scanning electron microscope: the SEM electron column explained

By Karl Kersten - Dec 21, 2017

Scanning electron microscopes (SEMs) use an electron beam to image samples with a resolution down to the nanometer scale. The electrons are emitted from a filament and collimated into a beam in the electron source. The beam is then focused on the sample surface by a set of lenses in the electron column. How does an electron lens work? And which kind of lenses exist? How are lenses combined to form an electron column? In this blog, we will answer these questions and give a general insight into the working principle of an electron column.

Scanning electron microscopes (SEMs) use an electron beam to image samples with a resolution down to the nanometer scale. The electrons are emitted from a filament and collimated into a beam in the electron source. The beam is then focused on the sample surface by a set of lenses in the electron column. How does an electron lens work? And which kind of lenses exist? How are lenses combined to form an electron column? In this blog, we will answer these questions and give a general insight into the working principle of an electron column.

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Spot size in scanning electron microscopy (SEM): why it matters!

By Antonis Nanakoudis - Nov 9, 2017

Scanning electron microscopes have emerged as a very valuable characterization method in recent years, following the major technological developments and the continuous shrinking of material dimensions. SEMs are versatile tools that allow users to perform many different types of analyses on a wide range of materials and to achieve the best results, users should carefully select the main microscope settings. One of those settings is the spot size, i.e. the diameter of the probe at the sample. In this blog, I explain how to adjust the spot size in a SEM — and how to achieve the right balance between high-resolution imaging and a high beam current to get the results you’re looking for.

Scanning electron microscopes have emerged as a very valuable characterization method in recent years, following the major technological developments and the continuous shrinking of material dimensions. SEMs are versatile tools that allow users to perform many different types of analyses on a wide range of materials and to achieve the best results, users should carefully select the main microscope settings. One of those settings is the spot size, i.e. the diameter of the probe at the sample. In this blog, I explain how to adjust the spot size in a SEM — and how to achieve the right balance between high-resolution imaging and a high beam current to get the results you’re looking for.

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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.

Tip: Get a free demo of our Desktop SEM and discover it's capabilities for your research
Request your personal demo

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.

Tip: Get a free demo of our Desktop SEM and discover it's capabilities for your research
Request your personal demo

Read more

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