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光镊技术,又称光学捕获技术,它是利用光的辐射压力来捕获和操纵包括电介质颗粒、生物细胞及生物大分子在内的微小粒子的。近场光镊技术利用近场光学倏逝场随距离急剧衰减的特征,可显著地降低捕获粒子的尺寸,实现纳米捕获。追踪了近场光镊技术的最新进展,包括全内反射相干倏逝场、近场光学镀膜光纤探针尖、激光照明金属探针尖和聚焦倏逝场用于近场光学捕获,并对其进行了比较,分析了它们存在的主要问题和未来发展方向。
Optical tweezers technology, also known as optical capture technology, uses the radiation pressure of light to capture and manipulate tiny particles, including dielectric particles, biological cells, and biological macromolecules. Near-field optical tweezers technology uses the characteristics of near-field optical evanescent field with sharp decay with distance, can significantly reduce the size of capture particles, to achieve nano-capture. Recent developments in near-field optical tweezers technology are followed, including total internal reflection coherent evanescent fields, near-field optical coated fiber tip, laser illuminated metal probe tip, and focused evanescent field for near-field optical capture Have carried on the comparison, has analyzed their main problems and the future development direction.