Knowledge Base

Welcome to the Lambda Knowledge Base

  1. How scanning electron microscopy fuels biomedical research

    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...
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  2. Web Order Payment Methods

    Lambda can accept the following payment methods for website orders: Credit card, handled by Sagepay or PayPal PayPal, either Express Checkout or Standard Checkout Purchase Order number, from customers with an existing account with us If none of the above are appropriate for you, please call us on +44 (0) 1582 764334 or email [email protected]
    To speak with a Sales & Applications Engineer please call 01582 764334 or click here to email.
  3. Basics of Acousto-Optic Devices

    Acousto-Optic Beam Modulators and Deflectors Control Laser Beams in Many Applications. by John Lekavich, Director, IntraAction Acousto-Optics, the interaction of sound waves and light in a transparent medium, has proven an effective means of amplitude-modulating, deflecting, or shifting the optical frequency of laser light. When a transparent medium is subject to a stress, the optical refractive index of the medium...
    To speak with a Sales & Applications Engineer please call 01582 764334 or click here to email.
  4. Food science research: how scanning electron microscopy is used

    In food sciences, researchers face many different and challenging microscopy tasks: from particle and fibre analysis, to food preservation, food microbiology and food pathogens. Many different microscopy techniques are used within food science. Food science research and scanning electron microscopy (SEM) have been strongly related for many years. SEM can be used in various studies from herbs to fruits, and...
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  5. Emission stability in SEM thermionic electron sources: CeB6, LaB6 and W filaments

    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...
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  6. SEM and TEM: what's the difference?

    Electron microscopes have emerged as a powerful tool for the characterisation 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...
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  7. SEM and fibre analysis for filtration systems quality control

    The production of filters and membranes undergoes several quality control steps to ensure that the properties of the product are up to specification. Different tools can be used for such analysis, but only one can provide the best results. Find out in this blog how Scanning Electron Microscopes (SEM) can be used to investigate imperfections in metallic filters. Different purpose...
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  8. Rigol’s New Real-time Spectrum Analyser

    Never Miss a Signal Today’s RF designs utilise rapidly changing and pulsing signals that are difficult to consistently capture on traditional swept spectrum analysers. The Rigol RSA5000 delivers a class leading 7.45µsec 100% probability of intercept meaning that any pulse with a duration of greater than 7.45µsec will be captured and accurately displayed. Isolate & Capture IoT Device proliferation means...
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  9. Ultra High Resolution OSA: a perfect tool for optical Orthogonal Frequency Division Multiplexing (OFDM) measurement and adjustment

    The Ultra High Resolution OSA (UHR-OSA) proposed by APEX Technologies remains a very important tool not only to measure the optical OFDM (Orthogonal Frequency Division Multiplexing) signal spectrums even with few tens of MHz spacing sub-carriers but also to adjust and adapt it to other modulation techniques. APEX-UHR-OSA incessant need in OFDM research area APEX UHR-OSAs have found a wide industrial and...
    To speak with a Sales & Applications Engineer please call 01582 764334 or click here to email.
  10. Ultra High Resolution OSA for Characterising and interrogating Fibre Bragg Grating Sensors

    The APEX Technologies Ultra High Resolution Optical Spectrum Analyser (OSA) can be used to measure the active/passive optical component insertion loss/gain thanks to the possibility to synchronise the internal Tunable Laser Source and the OSA sweepings. In this context, the APEX OSA remains a perfect tool to measure the Fibre Bragg Grating (FBG) Sensor reflection with 1 MHz of resolution...
    To speak with a Sales & Applications Engineer please call 01582 764334 or click here to email.

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