Surface Analysis Laboratory

The Asemblon Surface Analysis Lab

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The Asemblon Surface Analysis Lab Provides:

The experience you need

  • 10 + years in surface analysis experience

    • The attention and service you deserve

  • Quick turn around time for data

    • The prices you will like

  • Competitive pricing

    • XPS/ESCA

    X-ray photoelectron spectroscopy (XPS), also known as electron spectroscopy for chemical analysis (ESCA), is a powerful surface analytical method that can be used to:

    • Determine the chemical composition of the sample surface
    • Identify all elements (except hydrogen and helium) present within the upper 100 Å of a surface
    • Determine the bonding state of elements
    • Determine the oxidation state of inorganic elements
    • Look at the compositional changes within the upper 100 Å through a non-destructive depth profile

    Asemblon has a monochromatized SSI X-probe ESCA system equipped with an aluminum X-ray source. Our instrument is capable of both high signal to noise and high resolution analysis of a wide variety of sample types and sizes. Combined with our instrumentation we have over 10 years of experience analyzing and interpreting ESCA spectra of self-assembled monolayers, polymers, metals, glass, and more. Our staff has experience with analyzing many types of samples including fibers, tubes, wires, powders and of course simple flat substrates. The Asemblon team also brings over 30 years of experience in surface modification into their analytical services. This background enables us to more fully understand your samples and truly help you find the answers you are looking for.

    Contact Angle

    The contact angle is the angle that is formed between a small drop of a liquid at a surface or interface. Typically contact angles are measured between a liquid and solid surface. The contact angle of a droplet on a surface is determined by the balance of forces between the solid, liquid and vapor (air) interfaces. Contact angle measurements are very surface sensitive, typically sampling the upper 3 to 20 Å.

    Contact angle measurements can:

    • Provide a quick assessment of successful surface modification
    • Measure the interfacial energy of a surface
    • Determine the presence of surface contamination
    • Asses the chemical functionality of a surface