Knowledge Base

WHY IS SEM IMAGING USED TO STUDY GLASS FIBRES? SEM imaging is an ideal tool to check the homogeneity, compactness aof glass fibres in a polymer matrix. Other defects such as poor adhesion of the fibres to the polymer matrix (shown as clean fibres) can also easily be detected. Chemical microanalysis techniques (EDS) used in conjunction with scanning electron microscopy...

WHY IS SEM IMAGING USED TO STUDY NANOFIBRES? SEM imaging is an ideal tool to check the homogeneity and diameter of nanofibres. SEM manufacturers have developed specific software applications for a fully automatic fibre diameter distribution measurement. Nanofibres are also used in air filtration applications for antibacterial and nanoparticle applications. SEM imaging (eventually combined with EDS chemical microanalysis techniques) to...

WHY IS SEM IMAGING USED TO STUDY FACE MASKS? SEM imaging is an ideal tool to check the homogeneity, compactness and average diameter of fibres in the different face mask layers. The SEM image show a 10nm gold coated non-woven polypropylene filtration layer at 1400x magnification. Some SEM manufacturers have developed specific software applications for a fully automatic fibre diameter...

WHY IS SEM IMAGING USED TO STUDY NANOFIBRES? SEM imaging is an ideal tool to check the fibre surface properties and the structure of collagen networks. In general, a lot of organic and biological samples such as tissue, blood vessels and cartilage provide very interesting information when imaged by SEM. Such materials however are very poor electrical and thermal conductors...

WHY IS SEM IMAGING USED TO STUDY DIATOMS? Diatoms are used to help determine the origin of materials containing them. One important field of use is forensics. A typical application is to differentiate a death by submersion form a post-mortem immersion of a body in water. Because the composition of diatoms is specific for a specific location, a sample of...

SID4 EXCLUSIVE TECHNOLOGY: 4-Wave Lateral Shearing Interferometry PHASICS® technology was introduced to overcome the Shack-Hartmann sensor limitations, especially resolution. This ultra-high resolution enables accurate wavefront measurement for robust calculations of beam parameters... To read more click HERE to download the full article. Lambda Photometrics is the leading UK Distributor of Characterisation, Measurement and Analysis solutions with particular expertise in Instrumentation...

Is there such a thing as structure insensitive heterogeneous catalysis? Dr. Charlotte Vogt, Principal Investigator at the Technion Institute of Technology in Israel, will address this phenomenon in our upcoming VSPARTICLE user webinar. Please join us if you would like to know more on this topic.Wednesday, 2nd March 2022 - 9amIn this webinar, Dr. Charlotte Vogt will address a fundamental concept in heterogeneous catalysis: structure (in)sensitivity. The VSP-G1 Nanoparticle Generator was...

One of the truly unique features of the PHOTON RT spectrophotometer is the capability to run broadband measurements. The most sophisticated configuration offers an unsurpassed opportunity to qualify optical coatings continuously from 185nm in the UV to 5200 nm in the MWIR.  Throughout EssentOptics business history, they have regularly set new benchmarks for broadband measurement capability. Since their first announcement...

Complex asphere metrology ideally suited for production-level volumes. Advances in diamond turning and small-tool deterministic polishing have dramatically increased optical manufacturing capabilities to produce nearly any surface shape. Designers have leveraged these capabilities by increasingly designing aspheric optics into imaging, sensing and laser systems to improve performance and reduce size and weight of optical systems. However, it isn’t just the polishing equipment...

The synthetic fluoropolymer of tetrafluoroethylene AKA Polytetrafluoroethylene (PTFE) and its analogues are strongly hydrophobic and having low surface energies of less than 18 dyn/cm are perhaps best-known for their non-stick properties. This low surface energy along with PTFE’s high electrical insulating properties can make sputter coating with noble metals prior to SEM a real challenge. Not anymore. Image courtesy of...