The CIQTEK DB550 dual-beam FIB-SEM brings together high-resolution electron imaging and precision ion beam processing on a single platform. CIQTEK has validated its DB550 Focused Ion Beam Scanning Electron Microscope (FIB-SEM) on real 5nm process node chip samples, demonstrating production-ready TEM sample preparation with intact fin structures, zero amorphization, and clearly resolved film layers. The results confirm that the DB550 meets the exacting demands of advanced semiconductor failure analysis labs working at the cutting edge of process technology. In advanced chip research and manufacturing, two tools matter above all others. The Transmission Electron Microscope (TEM) lets you see structures at the atomic scale. But before you can look, you need a sample thin enough for electrons to pass through. That is where the dual-beam FIB-SEM comes in. It is the precision workshop that prepares those ultra-thin specimens. Meet the DB550: One Platform for Imaging and Nanoscale Processing The CIQTEK DB550 FIB-SEM integrates two powerful capabilities onto a single platform. On one side, a scanning electron microscope (SEM) delivers high-resolution surface imaging. On the other, a focused ion beam (FIB) performs nanoscale material removal with surgical precision. Together, they bridge the gap between observation and fabrication at dimensions measured in billionths of a meter. At the heart of the DB550 sits a low-voltage, high-resolution electron column paired with CIQTEK's proprietary "Chengying" ion column, developed entirely in-house. The Chengying column is the engine behind the system's nanoscale cutting and etching capabilities. CIQTEK controls the full design and manufacturing pipeline for this critical component. The 5nm Challenge: Why Sample Preparation Gets Harder at Every Node At 5nm and below, chip architectures rely on fin-type field-effect transistors (FinFETs) with fin widths and pitches measured in just a few nanometers. The DB550 is designed to handle the full sample preparation workflow for these demanding process nodes. It starts with high-current rough cutting to quickly remove bulk material and reach the target region. Then it transitions to low-voltage fine polishing to thin the sample to TEM-ready dimensions without damaging the delicate structures underneath. TEM Validation: The Proof Is in the Image CIQTEK prepared a 5nm process node chip sample on the DB550 and transferred it to a TEM for characterization. The results speak for themselves. TEM characterization of a 5nm chip sample prepared on the DB550 shows intact fin structures with clear, well-defined film layers and no amorphization damage. The TEM images revealed that the fin structures remained completely intact after FIB preparation. There was no detectable amorphization in the silicon crystal lattice. The individual film layers appeared clear and sharply defined in the TEM cross-section. These results validate the dual-beam sample preparation performance of the DB550 on...

A Winning Team: SEM + FIB, the "Golden Combination" CIQTEK brings SEM and FIB together as a powerful team, providing critical support for PCB process optimization, reliability verification, and root cause determination of failures. SEM High-Resolution Imaging: The "Microscope" for Surface Details The SEM uses a high-resolution electron beam to capture crisp images of PCB surface morphology. It reveals solder pad plating, intermetallic compounds, micro-cracks, tin whiskers, and foreign particle contamination with exceptional clarity. Coupled with energy-dispersive X-ray spectroscopy (EDS), the SEM also performs elemental analysis on microscopic regions. This combination lets engineers identify the chemical signature of defects, making it straightforward to spot issues like short circuits, open circuits, corrosion, and plating anomalies. FIB Nanoscale Cutting: The "Scalpel" for Internal Structures While the SEM excels at surface imaging, the FIB takes over when you need to see what is happening inside the board. Using a nanometer-precision ion beam, the FIB performs targeted cross-sectioning at the exact defect location. It prepares ultra-thin slices through multi-layer boards, blind vias, and buried vias, exposing internal structures that mechanical sectioning simply cannot reach. Think of the FIB as a microscopic surgical tool. It removes material with nanometer accuracy, leaving a clean cross-section ready for imaging and analysis. CIQTEK Semiconductor Showcase: See It in Action The Beauty of the Microscopic World, Revealed in Every Detail. Here are real examples of CIQTEK electron microscopes in PCB cross-section observation: Solder Joint Interface Panorama Low magnification observation of capacitor overall morphology, viewing the real microscopic structure of the capacitor solder joint interface from the inside IMC Layer Evaluation Evaluating interlayer bonding, measuring IMC thickness and uniformity, detecting voids, cracks, and interface defects Multi-Layer Board Inner Structure Clear observation of IMC layer morphology, thickness, continuity, and density at the solder pad and solder interface Process Reliability Evaluation Evaluating trace pattern, thickness, etching quality and copper-to-substrate bonding, detecting line shift, etch defects, delamination, voids, and analyzing plating layer quality for PCB process control and reliability assessment Built for Labs That Demand Reliability CIQTEK develops its electron microscopy platforms from the ground up, covering core algorithms through hardware design. This vertical integration ensures consistent performance and long-term supply stability, which matters for labs running continuous production or multi-year research programs. The company backs its instruments with responsive technical support and regular software updates, helping users keep their systems running efficiently over time. Get in Touch If you are evaluating SEM or FIB systems for your PCB inspection workflow, the CIQTEK team can...

La temperatura no es solo un entorno ambiental en resonancia paramagnética electrónica (RPE) Espectroscopia. Es un parámetro experimental fundamental, a la par de la potencia de microondas y el rango del campo magnético. Elegir la temperatura adecuada permite obtener señales más nítidas, mayor sensibilidad y detalles estructurales que las mediciones a temperatura ambiente no pueden revelar. Si se elige incorrectamente, la señal puede desaparecer por completo. Esta guía explica la física de la EPR a temperatura variable y ayuda a seleccionar la configuración adecuada para las muestras. Por qué la temperatura es tan importante en la EPR Todo experimento de EPR plantea tres preguntas: ¿Cómo modifica la temperatura el entorno de espín microscópico? ¿Cómo afecta a la interpretación espectral? ¿Y qué sistemas requieren necesariamente mediciones a temperatura variable? Analicemos esto en detalle. Refrigeración: La forma más sencilla de aumentar la sensibilidad La señal EPR proviene de un hecho simple. Los electrones desapareados ocupan dos niveles de energía de espín, y la diferencia de población entre esos niveles es lo que detectamos. En un campo magnético externo B 0 , los espines de los electrones experimentan División de Zeeman , creando dos niveles con m s = +1/2 y m s = -1/2. La diferencia de energía entre ellos es: El distribución de Boltzmann rige cómo los electrones pueblan estos niveles. La proporción de población depende de la temperatura de una manera muy directa: Esto es lo que significa en la práctica. La intensidad de la señal EPR es proporcional a la diferencia de población entre los dos niveles. Esa diferencia se escala como 1/T. En otras palabras, si se baja la temperatura, la señal se vuelve más fuerte. Punto. La temperatura es una variable independiente y totalmente controlable, por lo que enfriar la muestra es la forma más fundamental y directa de aumentar la sensibilidad absoluta en Espectroscopia EPR . Espectros de RPE de una muestra de carbón de baja concentración, medidos a diferentes temperaturas. Las temperaturas más bajas producen señales mucho más intensas. (Medidos con un sistema de RPE CIQTEK). El enfriamiento ralentiza la relajación, revelando señales ocultas. La temperatura no solo afecta la intensidad de la señal. También controla relajación de giro , que determina si se puede detectar una señal. La relajación en resonancia magnética se divide en dos categorías. Relajación espín-red (T 1 ). Este es el proceso en el que los espines excitados intercambian energía con la red cristalina circundante. Es altamente sensible a la temperatura. A temperatura ambiente, las vibraciones de la red son vigorosas. Los espines excitados disipan su energía rápidamente, por lo que T 1 es corto. Enfría el sistema y, efectivamente, "congelarás" esas vibraciones de la red. 1 Se alarga drásticamente. Relajación espín-espín (T 2 ). Esto se debe principalmente a las interacciones dipolares magnéticas entre espines vecinos. La temperatura influ...