CATEGORIES

    Ultramicroscope

    Overview Knowledge Standards Terms
    The ultramicroscope utilizes the principles of light diffraction and interference by placing tiny particles under intense illumination and observing their scattered light spots to detect submicron-sized particles. It is used to observe objects such as colloids and bacteria that cannot be resolved by ordinary microscopes, aiding in the analysis of particle distribution in materials science and biological research.
    Selection
    When selecting an ultramicroscope, consider the sample type and particle size range, and match the light source wavelength with detector sensitivity. Pay attention to whether the system resolution and magnification meet observation requirements, and check the operational complexity and maintenance costs. Ensure the equipment is compatible with the existing laboratory environment and refer to practical application cases to verify performance.
    type
    Method
    Structure
    Number of eyepieces
    magnification
    Light Source
    Imaging
    Objective

    Terms

    Basket Sand Mill
    Binocular Metallographic Microscope
    Optical high-power microscope
    Inverted Biological Microscope
    Laboratory ultrasonic cleaner
    Conical sand mill
    Inverted microscope
    Metallurgical microscope
    Stereomicroscope
    Polarizing Stereomicroscope

    Standards

    Active GB/T 16582-2008
    Plastics - Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods
    Active GB/T 36264-2018
    Test method for tensile strength of fiber composites under ultrahigh temperature and oxidizing environment
    Active GB/T 37900-2019
    Test method of hardness and fracture toughness for ultra-thin glass—Low-load vickers hardness indentation method
    Active GB/T 38534-2020
    Test method for tensile properties of oriented fibre reinforced polymer matrix composite materials at ultra-low temperature
    Active GB/T 38686-2020
    Test method for flexibility of ultrathin glass—Two point bending method
    Active GB/T 11344-2021
    Non-destructive testing—Ultrasonic thickness measurement
    Active GB/T 37361-2019
    Determination of the film thickness—Ultrasonic thickness gauge method
    Active GB/T 27596-2011
    Dyestuffs - Determination of particle fineness - Microscope method
    Active GB/T 38898-2020
    Non-destructive testing—Testing method for measuring coating bond strength using ultrasonic wave
    Active GB/T 40332-2021
    Non-destructive testing—Ultrasonic testing—Characterization and verification of ultrasonic thickness measuring equipment
    Active GB/T 44525-2024
    Non-destructive testing—Ultrasonic testing—Specification for resin matrix composite reference block
    Active GB/T 2679.11-2008
    Paper and board - qualitative analysis of mineral filler and mineral coating - SEM/EDAX method

    Articles

    Ultrasonic Thickness Gauge Selection: Technical Considerations for Probe Configuration and Measurement Modes
    This article primarily introduces the technical factors to consider when selecting an ultrasonic thickness gauge. In terms of probe configuration, the frequency affects both resolution and penetration depth, while crystal size determines adaptability to curvature and surface conditions. Dual-element probes offer a smaller dead zone compared to single-element probes, and delay-line probes are suitable for thin-wall and high-temperature applications.
    Vacuum adsorption coating machine solves the flatness challenge in the transfer of ultra-thin graphene films.
    The vacuum adsorption coating machine transfers graphene films smoothly onto target substrates through controlled negative pressure, solving issues such as wrinkling, tearing, and contamination often encountered with traditional methods.
    Superhydrophobic surface coating is applied to the microstructure substrate using a film coating machine.
    This article introduces the coating process of superhydrophobic surface coatings on microstructured substrates. Superhydrophobic coatings feature high water contact angles and low rolling angles, making them widely used in applications such as anti-fouling and waterproofing.
    Ultrasonic thickness gauge for detecting thick coatings and composite coatings.
    Ultrasonic thickness gauges measure coating thickness using the principle of ultrasonic pulse reflection, calculating the result based on the propagation time of sound waves in the material and the speed of sound. When detecting thick coatings and composite coatings, challenges such as acoustic attenuation of the material, unknown sound speed, and signal recognition at multi-layer interfaces must be addressed.
    Analysis of Causes for Excessive Repetition Error in Microbalances
    Microbalance repeatability out-of-tolerance refers to the situation where the results of multiple weighings of the same object exceed the allowable range of variation.
    Ultrasonic Thickness Gauge Measures the Thickness of Flexible Packaging Materials
    This article introduces the principles, technical points, and operational procedures for measuring the thickness of flexible packaging materials using an ultrasonic thickness gauge. It is based on the principle of ultrasonic pulse reflection, which calculates thickness by measuring the propagation time of sound waves through the material.
    The principle of measuring dry film thickness with a coating thickness gauge
    Coating thickness gauges measure dry film thickness through non-destructive methods, with commonly used principles including electromagnetic induction, eddy current, and ultrasonic methods.
    To determine if an ultrasonic cleaner cleans effectively, first understand the two key parameters: frequency and power.
    This article mainly discusses how to achieve thorough cleaning with an ultrasonic cleaner, emphasizing that the key factors are frequency and power. The frequency determines the size and penetrating ability of the bubbles generated during cleaning, while the power provides the necessary energy for the cleaning process.