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HRTEM image from a segment of a filled multi-walled carbon nanotube (Copyright QinetiQ Ltd.) |
CEMMNT offer world leading Transmission Electron Microscopy (SEM) services and expertise across multiple industry sectors, offering clients a cost-effective, fast-turn around service whilst utilising state-of-the-art equipment, techniques and facilities.
Transmission Electron Microscopy (TEM) uses a high energy (100-400keV) focused electron beam to generate ultra-high resolution images of thin samples, allowing lattice imaging in the case of crystals. Bulk samples require careful preparation (in plan-view or cross-section) by polishing and/or ion beam thinning to achieve electron transparency. Individual features or devices can be targeted. Free nanoparticles and nanofibres can be analysed directly.
The technique can be coupled with Energy-Dispersive X-ray analysis (EDX) and Electron Energy Loss Spectroscopy (EELS) providing nanoscale elemental analysis and chemical bonding information. Detailed local crystallographic analysis (phase, orientation, defects and strain) is also possible.
- Image area: 10 nm to 20 microns
- Resolution: 0.2 nm (High-resolution TEM; Lattice imaging)
- Bright-field & dark-field imaging
- Local elemental analysis using EDX and EELS
- Selected area diffraction
- Cross-section analysis
- Multilayer thickness determination
- Defect characterisation
- Interfacial layers (roughness, defects, bonding, ultra-thin layers)
- Local crystal structure determination and visualisation
- Semiconductor device imaging
- Polycrystal grain structure
- Nanoparticle and nanotube size, shape and structure determination
- Inter-disciplinary expertise
- Fast turnaround service
- Access to an unparalleled range of state-of-the-art techniques and facilities
- Extensive sample preparation experience & capabilities
- Leading expertise in data interpretation
- Wide range of complementary techniques available for comparison
- High quality data
- Confidentiality
- Client-focussed and responsive service
- Discussions with experts with relevant applications experience
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