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...

Para análise estrutural de moléculas orgânicas complexas e produtos naturais, experimentos de RMN de correlação escalar homonuclear 2D estão entre as ferramentas mais úteis para resolver ambiguidades causadas por sinais sobrepostos em espectros 1D. Entre os mais amplamente utilizados 1H-1H experimentos de correlação, COSY e TOCSY respondem a duas perguntas diferentes, porém complementares. COSY é usado principalmente para rastrear conectividade local próton-próton através de acoplamentos J observáveis, enquanto TOCSY estende a transferência de magnetização através de uma rede de acoplamento contínua e ajuda a identificar todos os membros observáveis do mesmo sistema de spin. Em termos práticos, COSY ajuda a responder "Quais prótons estão acoplados uns aos outros?", enquanto TOCSY ajuda a responder "Quais prótons pertencem ao mesmo sistema de spin?" Este artigo percorre os dois experimentos, desde os princípios da sequência de pulsos até a interpretação prática do espectro, explicando suas principais diferenças e como eles podem ser usados juntos em espectroscopia de RMN 2D. 1. Funções Principais de COSY e TOCSY COSY, ou Espectroscopia de Correlação, e TOCSY, ou Espectroscopia de Correlação Total, ambos usam acoplamento escalar, ou acoplamento J, para fornecer informações de correlação de prótons através de ligações químicas. No entanto, o tipo de informação estrutural que eles foram projetados para revelar é diferente. Considere uma cadeia de prótons continuamente acoplada: H1 → H2 → H3 → H4 COSY: Conectividade de Acoplamento Local COSY detecta principalmente acoplamentos escalares diretamente observáveis entre pares de prótons. As correlações mais comuns surgem de 2JHH e 3JHH acoplamentos, por exemplo: H1 ↔ H2H2 ↔ H3H3 ↔ H4 Essas correlações aos pares permitem que os pesquisadores construam a conectividade protônica local passo a passo. Em outras palavras, um espectro COSY é particularmente útil quando o objetivo é reconstruir a relação sequencial entre prótons vizinhos ou de outra forma detectavelmente acoplados. Nota: As correlações COSY não se restringem a acoplamentos de duas e três ligações. Em sistemas alílicos, sistemas aromáticos ou geometrias rígidas do tipo W, um acoplamento 4J suficientemente forte, tipicamente maior que cerca de 1,5 Hz, também pode gerar um pico cruzado COSY. Portanto, a presença de um pico cruzado por si só não deve ser tomada como prova de que dois núcleos são diretamente adjacentes na estrutura molecular. TOCSY: Atribuição de um Sistema de Spin Completo O TOCSY adota uma abordagem diferente. Através da transferência de magnetização por uma rede acoplada por J, prótons dentro do mesmo sistema de spin contínuo podem se tornar correlacionados mesmo quando dois prótons específicos não mostram um acoplamento direto forte um com o outro. Seu objetivo principal, portanto, não é determinar a conectividade direta de cada par de prótons. Em vez disso, o TOCSY é usado para identificar e agrupar múltiplos prótons que pertence...