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Materials Science
In situ Electron Microscopy
In situ microscopy for the high-resolution, real-time observation of samples’ responses to stimuli.
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In situ analysis
As materials research continues to advance, it is becoming increasingly important to not only observe materials in their initial and final state but also throughout their various applications. This might include imaging metal feedstocks as they are heated for additive manufacturing or wetting and drying of functionalized nanoparticles in order to understand their behavior in real-world conditions. Characterizing these behaviors is crucial as they impact critical research areas such as clean energy, transportation, catalysis, nano-electronics, and even human health.
In situ electron microscopy
While electron microscopy (EM) has traditionally been a static imaging method, advances in sample handling and rapid imaging have allowed the technique to be used for live, in situ observations. The high resolution of EM enables you to investigate nanoscale annealing behavior, phase transformations in metals, structural changes, sintering phenomena in catalysts, segregation/diffusion phenomena, and more.
In situ EM analysis of materials requires that the instruments offer fast and quantitative data acquisition along with dynamic high-resolution imaging. This is especially important when the investigated processes are dependent on rapidly changeable variables like temperature or humidity. For such dynamic experiments, the combination of flexibility in sample imaging, the ability to use different beam and vacuum conditions, and the fast collection of compositional data are indispensable.
A piece of solder heated and cooled directly within the scanning electron microscope. (Video)
In situ electron microscopes from Thermo Fisher Scientific
Thermo Scientific Environmental scanning electron microscopy (ESEM) and DualBeam (focused ion beam SEM) systems can operate under a variety of conditions that are needed for realistic in situ experiments. In particular, the MEMS-based Thermo Scientific μHeater Holder, in combination with in situ sample preparation, provides high-quality characterization at elevated temperatures.
Two-phase Co-Sb alloy heated to 700°C on a high vacuum heating stage. The antimony-rich phase sublimates during heating, causing exposure of the second phase (right image).
Mixture of magnetite and hematite nanoparticles heated to 1030 °C. This backscattered electron image was acquired simultaneously with the EDS elemental maps (see next image).
Mixture of magnetite and hematite nanoparticles heated to 1030 °C. This combined EDS map of iron and oxygen was acquired simultaneously with the backscattered electron image (see previous image).
Texture development on implant material. As the temperature increases from 700°C to 1300°C (next image) we can observe a completely different surface structure. Temperature: 700°C, Pressure: 120 Pa.
Texture development on implant material. As the temperature increases from 700°C (previous image) to 1300°C we can observe a completely different surface structure. Temperature: 1300°C, Pressure: 120 Pa.
Sodium chloride crystals dissolving and recrystallizing, observed directly in the low-vacuum mode of an environmental SEM.
Tissue fiber wetting and drying observed directly in the low-vacuum mode of an environmental SEM.
Metal nanoparticles coalescing as they are heated.
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Two-phase Co-Sb alloy heated to 700°C on a high vacuum heating stage. The antimony-rich phase sublimates during heating, causing exposure of the second phase (right image).
Mixture of magnetite and hematite nanoparticles heated to 1030 °C. This backscattered electron image was acquired simultaneously with the EDS elemental maps (see next image).
Mixture of magnetite and hematite nanoparticles heated to 1030 °C. This combined EDS map of iron and oxygen was acquired simultaneously with the backscattered electron image (see previous image).
Texture development on implant material. As the temperature increases from 700°C to 1300°C (next image) we can observe a completely different surface structure. Temperature: 700°C, Pressure: 120 Pa.
Texture development on implant material. As the temperature increases from 700°C (previous image) to 1300°C we can observe a completely different surface structure. Temperature: 1300°C, Pressure: 120 Pa.
Sodium chloride crystals dissolving and recrystallizing, observed directly in the low-vacuum mode of an environmental SEM.
Tissue fiber wetting and drying observed directly in the low-vacuum mode of an environmental SEM.
Metal nanoparticles coalescing as they are heated.
Documents
Control de calidad
El control y garantía de calidad son esenciales en la industria moderna. Ofrecemos una gama de herramientas de EM y espectroscopía para el análisis multiescala y multimodal de defectos, lo que le permite tomar decisiones fiables e informadas para el control y la mejora de procesos.
Investigación sobre materiales fundamentales
Se investigan nuevos materiales a escalas cada vez más pequeñas para lograr el máximo control de sus propiedades físicas y químicas. La microscopía electrónica proporciona a los investigadores información clave sobre una amplia variedad de características materiales a escala nanométrica.
Investigación de baterías
El desarrollo de baterías se realiza mediante análisis multiescala con microCT, SEM y TEM, espectroscopía Raman, XPS y visualización y análisis 3D digital. Aprenda cómo este enfoque proporciona la información estructural y química necesaria para crear mejores baterías.
Investigación sobre polímeros
La microestructura polimérica determina las características y el rendimiento del material a granel. La microscopía electrónica permite un análisis exhaustivo en microescala de la morfología y composición de los polímeros para aplicaciones de control de calidad e I+D.
Investigación sobre metales
La producción eficaz de metales requiere un control preciso de las inclusiones y precipitados. Nuestras herramientas automatizadas pueden realizar varias tareas cruciales para el análisis de metales, incluyendo el recuento de nanopartículas, el análisis químico EDS y la preparación de muestras de TEM.
Investigación sobre catálisis
Los catalizadores son cruciales para la mayoría de los procesos industriales modernos. Su eficacia depende de la composición microscópica y la morfología de las partículas catalíticas; EM con EDS es ideal para estudiar estas propiedades.
Nanopartículas
Los materiales tienen propiedades sustancialmente diferentes en la nanoescala y en la macroescala. Para estudiarlos, la instrumentación S/TEM se puede combinar con la espectroscopia de rayos X por dispersión de energía para obtener datos de resolución nanométrica, o incluso subnanométrica.
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Servicios de microscopía electrónica para
la ciencia de materiales
Para garantizar un rendimiento óptimo del sistema, le proporcionamos acceso a una red de expertos de primer nivel en servicios de campo, asistencia técnica y piezas de repuesto certificadas.
