研究目的
Investigating the single-step formation of Cr2N nanoparticles by pulsed laser irradiation of a chromium target immersed in liquid nitrogen.
研究成果
The study successfully demonstrated the single-step formation of Cr2N nanoparticles using pulsed laser irradiation of a chromium target in liquid nitrogen. The nanoparticles exhibited good chemical stability and unique optical properties, including surface plasmon absorption. Theoretical calculations supported the experimental findings, indicating the potential for further research into the multifunctional properties of Cr2N nanoparticles.
研究不足
The study focuses on the production and characterization of Cr2N nanoparticles but does not explore their application in specific devices or systems. The stability of the nanoparticles under different environmental conditions beyond storage in isopropyl alcohol was not investigated.
1：Experimental Design and Method Selection:
The study employed laser irradiation of a chromium target immersed in liquid nitrogen to produce Cr2N nanoparticles. The process involved the use of a Nd:YAG Quantel Brilliant laser with specific parameters.
2：Sample Selection and Data Sources:
High-purity chromium target (Cr 99.995%) was used as the source material. The nanoparticles were characterized using TEM, SAXS, and UV-Vis absorption spectroscopy.
3：995%) was used as the source material. The nanoparticles were characterized using TEM, SAXS, and UV-Vis absorption spectroscopy.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Nd:YAG Quantel Brilliant laser, JEOL 1200EXII electron microscope, Bruker D8 Discovery diffractometer, Bruker D8 Advanced for SAXS, LAMBDA 1050 UV/Vis spectrophotometer.
4：Experimental Procedures and Operational Workflow:
The chromium target was irradiated in liquid nitrogen, and the resulting nanoparticles were collected and stored in isopropyl alcohol. Characterization was performed to analyze the structure, morphology, and optical properties of the nanoparticles.
5：Data Analysis Methods:
The data were analyzed using TEM for structural analysis, SAXS for size and shape determination, and UV-Vis spectroscopy for optical properties. Theoretical calculations were performed using density functional theory.
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