Science Behind the Service: Scanning Electron Microscopy
What is Scanning Electron Microscopy?
Scanning Electron Microscopy (SEM) is an advanced microscope imaging technique that uses a high energy electron beam to create a greyscale image of a sample's surface topography and obtain composition data. Variations in the level of grey shading create a 3d like image depicting shapes, textures and changes in the topography. Quality concerns can be evaluated for defects, corrosion and composition with the data obtained through the Electron Microscope.
How does a Scanning Electron Microscope work?
A scanning electron microscope uses a focused beam of electrons to scan a sample. When the electron beam scans the sample, two separate electron reactions take place causing backscattered electrons and secondary electrons. The microscope has receptors designed to collect these electron reactions to form the 3d like grey scale image. The first reaction occurs when the high energy electrons are d(r)eflected by the sample. samples reflects electrons from the e some of the electrons from the beam. This The atoms in the a scanning electron microscope is designed to interact with a sample layer, penetrating a few microns below the surface. This high energy column of electrons will produce 2 types of electron reactions, Backscattered electrons and Secondary electrons. Backscattered Electrons are high energy electrons that are reflected by the surface of a sample. These backscattered electrons originate from the electron gun that produces a high energy electron beam. Secondary Electrons are produced when atoms on the surface of a sample are electrons that are produced Microscopes using visible light . Three dimensional, high resolution images can be obtained. Details as small as 70 angstroms can be depicted guests and employees. Hand sanitizer stations will be provided at each entrance. Guests are asked to provide their own masks. If a guest arrives with out a masks Micron will either provide one for them or ask that they return at another time with proper protection. All precautions are being enacted to combat the COVID-19 Virus crisis in accordance with CDC guidelines. Common areas, work areas, conference rooms, restrooms, and packages will be sanitized regularly with disinfectant wipes and recommended all purpose cleaners.
Private Conference Rooms
Group Viewing Screens
Testing protocols lay out the course of the inspection for the day. Prior to booking you will want to ensure that our facility can accommodate all the testing needed.
Along with all of our regular testing we are equipped with a class 100 clean room, and sample preparation. Portable band saws, a table saw and grinders are are frequently used to prepare cross sections and obtain smaller cut samples for testing.
Booking an Inspection
Helpful Things to Include:
• Protocol or a List of testing you need
• a Range of Dates for Inspection
The Retainer must be paid in full prior to the day of inspection.
• Reference Micron Invoice # on payment
Please provide a Chain of Custody Sheet. Evidence transport is not provided
We are located behind the Mercedes Benz of Wilmington on Route 48 in the back right corner lot.
Wifi will also be provided.
A knowledgeable Senior technologist will advise on proper sample preparation and the best course of testing. Videography and photography is welcome for documentation. Separate Conference rooms will be available for private discussion of the case.
On occasions samples may be sent out for more testing.
Heat Treatment Quality Control
Defect Analysis in Castings
Case Depth Measurements
Stainless Steel Passivization Measurements
Grain Size Measurements
Internal Defects Determination
Corrosion Product Analysis
Surface Analysis: Auger, ESCA
Polymer Analysis: FTIR
Surface Topography: Keyence Digital, SEM
Hardness: Vickers, Knoop, Rockwell
Chemical Analysis: EDS