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...

In short Three research teams used CIQTEK ODMR instruments, including the scanning NV probe microscope (SNVM) and the diamond single-spin spectrometer, to move three different areas of advanced materials research forward.   A team at the Institute of Physics, Chinese Academy of Sciences, imaged spin waves in real space near magnetic defects and antiferromagnetically coupled stripe domains in YIG and LSMO films. They captured wavelength-selective scattering and, for the first time, a zig-zag wavefront distortion as spin waves crossed stripe domains.   A team at the University of Science and Technology of China stripped selenium out of 2D CuCrSe₂ by vacuum annealing. The resulting Se vacancies produced room-temperature ferromagnetism while the layered crystal structure stayed intact.   A team at the Institute of Semiconductors, Chinese Academy of Sciences, mapped how a transverse magnetic field mixes NV center spin states, weakens optical readout, and shifts the balance between the NV⁻ and NV⁰ charge states, all of which matter for keeping NV-based sensors stable in real-world magnetic environments.   Why this matters Optically detected magnetic resonance (ODMR) sits at the center of solid-state spin science. It is how researchers image microscopic magnetic fields, how they unpack spin dynamics, and how they turn a single atomic-scale defect in diamond into a working sensor. The three studies below all leaned on CIQTEK's ODMR product line, which includes the scanning NV probe microscope (SNVM) and the diamond single-spin spectrometer, to push into territory that older tools could not reach: spin wave imaging, room-temperature ferromagnetism in 2D materials, and the spin mixing behavior of NV centers themselves.   Here is what each team found, and why it matters for anyone building magnonic devices, spintronic materials, or diamond-based sensors. Study 1: Scanning NV imaging reveals how spin waves actually propagate Where it was published: SCIENCE CHINA Physics, Mechanics & Astronomy   Paper title: Visualizing modified spin-wave wavefronts near magnetic defects and domains using nitrogen-vacancy centers   Research group: The Li Yangmu group at the Institute of Physics, Chinese Academy of Sciences   The team used scanning NV imaging to perform real-space imaging and phase analysis of spin wave propagation and wavefronts near nanoscale magnetic defects and antiferromagnetically coupled stripe domains in magnetic thin films (YIG and LSMO). The work revealed wavelength-selective scattering and waveform modulation, giving device designers a new set of tools for building and tuning spin wave devices.   First, some background: why spin waves are hard to see Spin waves, also called magnons, are collective excitations of a magnetically ordered system. They carry information without the Joule heating losses that come with conventional charge-based devices, which makes them an attractive carrier for low-power, w...