CIQTEK has officially launched its 200 kV field emission transmission electron microscope, TEM-F200, delivering 0.10 nm information resolution and featuring several key subsystems developed in-house. Unveiled on October 18 at the 2026 National Electron Microscopy Annual Conference in China, the TEM-F200 is designed for demanding work in materials science, semiconductor research, and nanoscale characterization. The launch also marks another step toward a more complete domestic TEM platform, from key hardware to imaging and analysis workflows. Built Around Resolution, Stability, and Practical Use For TEM users, resolution is only part of the story. Stability, ease of operation, detector performance, automation, and service all affect what the microscope can actually deliver day-to-day. The TEM-F200 combines a 200 kV field emission electron source with a self-developed high-voltage power supply and optical system. TEM-F200 Key Specifications 200 kV Field Emission Transmission Electron Microscope Acceleration Voltage 20 to 200 kV Information Resolution 0.10 nm Point Resolution 0.25 nm STEM Resolution 0.16 nm STEM Detector Modes HAADF, ADF, ABF Magnification 20× to 1,200,000× Super-EDS Optional dual 100 mm² windowless SDD detectors with symmetrical geometry, energy resolution ≤127 eV Optional Configurations EELS, 4D-STEM, 3D-ED, in situ sample holder A thermostatic water-cooled objective lens and four-axis sample stage help support stable imaging, while automated aperture control, position memory, and one-click adjustment are designed to reduce repetitive manual work. The main imaging camera is CIQTEK’s self-developed 16-megapixel fiber-coupled CMOS camera, built specifically for TEM use. The camera combines a 9 μm CMOS sensor, 4K × 4K imaging, and up to 24 fps at full resolution. Less Time at the Controls, More Time on the Sample The TEM-F200 also puts a strong focus on workflow. Fluorescent-screen images can be transferred directly to the PC display, while high-voltage control, electron-gun auto-start, vacuum operation, sample-position auto navigation, and STEM detector movement can all be integrated into the system workflow. For laboratories that need more flexibility, the platform can also be expanded with EDS, EELS, 4D-STEM, 3D electron diffraction, side cameras, cryogenic components, and in situ holders. From FinFET Devices to Advanced Alloys The new system has already been demonstrated on a range of demanding samples. For semiconductor FinFET devices, local nanoscale features and fine lattice structures were clearly resolved, with FFT analysis showing a spacing down to 1.045 Å. Semiconductor FinFET Cross-sectional imaging of semiconductor memory chips clearly revealed multilayer thin-film and dielectric structures. For 7075 aerospace aluminum alloy, TEM-BF and STEM-HAADF imaging resolved nanoscale precipitates, discontinuous grain-boundary phases, and precipitate-free zones. The system was also used to e...

CIQTEK officially unveiled its self-developed TEM-F200 200 kV Field Emission Transmission Electron Microscope at the 2026 National Annual Conference on Electron Microscopy in Nanjing, China. The TEM-F200 was the headline launch among five new electron microscopy products introduced during the event. The new lineup also includes the TEM-F120 120 kV Field Emission TEM, SEM5000Ultra Ultra-High-Resolution Field Emission SEM, a purpose-built fiber-coupled CMOS camera for TEM, and CIQTEK SEM Agent. Together, the launches expand CIQTEK's electron microscopy portfolio from complete microscope systems to imaging hardware and intelligent software. A New 200 kV TEM Developed In-House On October 18, CIQTEK Vice President Dr. Cao Feng introduced the TEM-F200 during a conference presentation focused on the development of CIQTEK's 200 kV transmission electron microscopy technology. The system reaches an information resolution of 0.10 nm. Key components, including the high-voltage power supply, electron gun, constant-power water-cooled objective lens, fully automated apertures, and fiber-coupled CMOS camera, were developed in-house. The TEM-F200 is now ready for volume production and delivery. The launch marks an important step in CIQTEK's expansion into higher-end transmission electron microscopy and strengthens its ability to develop complete electron microscopy systems around core technologies. Five New Products Across TEM, SEM, Imaging and AI Alongside the TEM-F200, CIQTEK introduced four additional products covering different parts of the electron microscopy workflow: TEM-F120, a 120 kV Field Emission Transmission Electron Microscope SEM5000Ultra, an Ultra-High-Resolution Field Emission Scanning Electron Microscope A purpose-built fiber-coupled CMOS camera for TEM CIQTEK SEM Agent, an intelligent software platform for electron microscopy These launches extend beyond individual instruments. They cover complete TEM and SEM systems, core imaging components, and AI-powered software, showing a broader approach to electron microscopy development.   From New Instruments to Smarter Microscopy Workflows During the 2026 National Annual Conference on Electron Microscopy, CIQTEK also hosted a series of product sessions covering its TEM portfolio, the new SEM5000Ultra and wider SEM lineup, as well as its AI electron microscopy roadmap and SEM Agent platform. The focus was not simply on adding more instruments. As microscopy workflows become more complex, users increasingly need a combination of high-resolution imaging, stable hardware, automation, and easier operation. By developing complete microscopes, core components, and intelligent software together, CIQTEK is building a more connected electron microscopy platform for materials science, semiconductor research, life science, and other advanced applications.   Expanding CIQTEK's Electron Microscopy Platform CIQTEK also worked with seven industry partners during the conference to showcase technologies and ap...

For structural analysis of complex organic molecules and natural products, 2D homonuclear scalar-correlation NMR experiments are among the most useful tools for resolving ambiguities caused by overlapping signals in 1D spectra. Among the most widely used 1H-1H correlation experiments, COSY and TOCSY answer two different but complementary questions. COSY is mainly used to trace local proton-to-proton connectivity through observable J couplings, while TOCSY extends magnetization transfer through a continuous coupling network and helps identify all observable members of the same spin system. In practical terms, COSY helps answer "Which protons are coupled to each other?", while TOCSY helps answer "Which protons belong to the same spin system?" This article walks through the two experiments from pulse-sequence principles to practical spectrum interpretation, explaining their key differences and how they can be used together in 2D NMR spectroscopy. 1. Core Functions of COSY and TOCSY COSY, or Correlation Spectroscopy, and TOCSY, or Total Correlation Spectroscopy, both use scalar coupling, or J coupling, to provide proton correlation information through chemical bonds. However, the type of structural information they are designed to reveal is different. Consider a continuously coupled proton chain: H1 → H2 → H3 → H4 COSY: Local Coupling Connectivity COSY primarily detects directly observable scalar couplings between pairs of protons. The most common correlations arise from 2JHH and 3JHH couplings, for example: H1 ↔ H2H2 ↔ H3H3 ↔ H4 These pairwise correlations allow researchers to build the local proton connectivity step by step. In other words, a COSY spectrum is particularly useful when the goal is to reconstruct the sequential relationship between neighboring or otherwise detectably coupled protons. Note: COSY correlations are not restricted to two-bond and three-bond couplings. In allylic systems, aromatic systems, or rigid W-type geometries, a sufficiently strong 4J coupling, typically greater than about 1.5 Hz, may also generate a COSY cross peak. Therefore, the presence of a cross peak alone should not be taken as proof that two nuclei are directly adjacent in the molecular structure. TOCSY: Assignment of an Entire Spin System TOCSY takes a different approach. Through magnetization transfer across a J-coupled network, protons within the same continuous spin system can become correlated even when two particular protons do not show a strong direct coupling to each other. Its main purpose is therefore not to determine the direct connectivity of every proton pair. Instead, TOCSY is used to identify and group multiple protons that belong to the same spin system. For example, if H1, H2, H3, and H4 form a continuous coupling network, magnetization can propagate through the sequence: H1 → H2 → H3 → H4 As a result, correlations between more distant members of the system may appear in the TOCSY spectrum. Note: A...