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首页> 外文期刊>ACS Omega >Development of a Theoretical Model That Predicts Optothermal Energy Conversion of Gold Metallic Nanoparticles
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Development of a Theoretical Model That Predicts Optothermal Energy Conversion of Gold Metallic Nanoparticles

机译：预测金金属纳米粒子光热能转化的理论模型的开发

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Gold nanoparticles (AuNPs) can be found in different shapes and sizes, which determine their chemical and physical characteristics. Physical and chemical properties of metallic NPs can be tuned by changing their shape, size, and surface chemistry; therefore, this has led to their use in a wide variety of applications in many industrial and academic sectors. One of the features of metallic NPs is their ability to act as optothermal energy converters, where they absorb light at a specific wavelength and heat up their local nanosurfaces. This feature has been used in many applications where metallic NPs get coupled with thermally responsive systems to trigger an optical response. In this study, we synthesized AuNPs that are spherical in shape with an average diameter of 20.07 nm. This work assessed simultaneously theoretical and experimental techniques to evaluate the different factors that affect heat generation at the surface of AuNPs when exposed to a specific light wavelength. The results indicated that laser power, concentration of AuNPs, time × laser power interaction, and time illumination, were the most important factors that contributed to the temperature change exhibited in the AuNPs solution. We report a regression model that allows predicting heat generation and temperature changes with residual standard errors of less than 4%. These results are highly relevant in the future design and development of applications where metallic NPs are incorporated into systems to induce a temperature change triggered by light exposure.
机译：可以发现具有不同形状和大小的金纳米颗粒（AuNPs），这决定了它们的化学和物理特性。金属NP的物理和化学性质可以通过改变其形状，大小和表面化学性质来调整。因此，这导致了它们在许多工业和学术领域中的广泛应用。金属NP的特征之一是它们具有光热能转换器的功能，它们可以吸收特定波长的光并加热其局部纳米表面。此功能已用于金属NP与热响应系统耦合以触发光学响应的​​许多应用中。在这项研究中，我们合成了球形的AuNP，平均直径为20.07 nm。这项工作同时评估了理论和实验技术，以评估暴露于特定光波长时影响AuNPs表面发热的不同因素。结果表明，激光功率，AuNPs浓度，时间×激光功率相互作用和时间照度是影响AuNPs溶液中温度变化的最重要因素。我们报告了一种回归模型，该模型可以预测热量产生和温度变化，且残留标准误差小于4％。这些结果与将来的设计和应用开发高度相关，在这些应用中，将金属NP掺入系统中以引发由光照触发的温度变化。

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