ResourceGeneral Lab
sciTEM - High-Throughput Characterization of Nanoparticles by SEM/TEM
6 Sept 2017Analysis of nanoparticles by TEM is a very useful characterization method. However, by design, TEM instruments place sample grids under high vacuum. Having the capability to insert multiple samples at once inside the TEM and then acquiring all images without breaking vacuum for each one, results in a significant increase in the number of samples that can be analyzed per measurement cycle. This note describes the application of a well-proven technology for dispensing multiple liquid samples as colloidal suspension of nanoparticles onto a single TEM support grid. The technology can also be applied to related methods such as SEM.
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Pipettes and DispensersPipettes and dispensers are essential lab equipment used to dispense measured volumes of liquid accurately. Explore a range of manual and electronic pipettes, including single and multichannel, serological and volumetric pipettes, as well as a range of pipette tips. Bottle-top dispensers are also available for simple and fast solvent dispensing. Find the best pipettes & dispensers in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.NanotechnologyNanotechnology, or nanotech, is an engineering technique using molecular scale functional systems. Applications of nanotechnology include medicine and medical devices, electronics, air and water purification, food science and energy production.Particle CharacterizationParticle characterization instruments are used to determine particle size distribution, shape, surface area, zeta potential, density and porosity of particles and materials. Multiple tecchniques are available for determining particle size, shape and count including dynamic light scattering (DLS), laser diffraction, electrozone (Coulter technique), imaging particle analysis and single particle optical sensing. Determine the density of your material with a gas pycnometer or examine its surface area and porosity with gas adsorption analyzers and mercury porosimeters. Find the best particle characterization instruments in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Non-Destructive TechniquesNon-destructive techniques (NDT) describes a variety of analytical techniques used to evaluate the properties of a material. Common methods include ultrasonic, magnetic-particle, liquid penetrant, radiographic, remote visual inspection (RVI), and eddy-current testing. NDT is regularly used in forensic engineering, civil engineering, mechanical engineering, electrical engineering, systems engineering, aeronautical engineering, and medicine.Electron MicroscopyElectron microscopes (EM) are used to create high-resolution images of samples at the nanoscale by means of an accelerated beam of electrons as a source of illumination. Types of electron microscope include scanning electron microscopes (SEM), transmission electron microscopes (TEM), scanning transmission electron microscopes (STEM) and cryo-electron microscopes. Focused ion beam (FIB) microscopes are useful for modifying or milling a sample surface with nanometer precision, as well as imaging. Find the best electron microscopes in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.High ThroughputHigh throughput experiments allow the simultaneous processing of several samples. This parallelization reduces the cost per experiment and increases reproducibility and output volume of data.SEMScanning Electron Microscopy (SEM) is a technique that uses a focused electron beam to scan a sample and create high-resolution images. It is widely used in materials science, nanotechnology, and biological research. Explore SEM systems in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.NanoparticlesNanoparticles are between 1-100nm in size. Nanoparticles can be used for a wide variety of applications including biomedical, catalysis and electronics.TEM