The present invention relates generally to a system and a method for thermo-optical measurements in a droplet (23) of aqueous solution comprising particles of interest, the method comprising the following steps: providing the droplet of aqueous solution with a volume of less than 200nl, wherein the aqueous solution is a first liquid (21) and at least a part of the particles of interest are fluorescent particles; embedding the droplet (23) of aqueous solution at least partly in a second liquid (21); irradiating a laser light beam into the droplet to obtain a spatial temperature distribution in the droplet around the irradiated laser light beam; exciting fluorescently said fluorescent particles and detecting the fluorescence at least at one position or at around one position in the droplet or detecting the fluorescence distribution of said fluorescently excited particles, wherein said detection of fluorescence is performed at least once at a predetermined time after the start of the laser irradiation; and determining a characteristic of the particles of interest from the detected fluorescence intensity or fluorescence intensity distribution.
本发明一般涉及一种系统和一种方法,用于在包含相关颗粒的
水溶液液滴(23)中进行热光学测量,该方法包括以下步骤:提供体积小于 200nl 的
水溶液液滴,其中
水溶液为第一液体 (21),至少一部分感兴趣的颗粒为荧光颗粒;将
水溶液液滴 (23) 至少部分嵌入第二液体 (21);将激光光束照射到液滴中,以获得照射的激光光束周围液滴中的空间温度分布;激发所述荧光颗粒的荧光,并检测液滴中至少一个位置或周围一个位置的荧光或检测所述荧光激发颗粒的荧光分布,其中所述荧光检测至少在激光照射开始后的预定时间进行一次;以及根据检测到的荧光强度或荧光强度分布确定相关颗粒的特征。