Photoacoustic technique has emerged as one of the foremost methods for the accurate measurement of thermophysical parameters for a wide range of solid materials. This technique has been used to study the non-linear optical (NLO) single crystal of benzil (BZ) which have been grown in both slow evaporation solution technique (SEST) and Sankaranarayanan-Ramasamy (SR) technique. The grown crystals are found to be of good quality; single crystals have been put under the investigations of single crystal X-ray diffraction (XRD) and photoacoustic (PA) effect. PA study can be utilised to find out a few thermophysical parameters such as thermal conductivity, thermal diffusivity and thermal effusivity. The observed value of thermal diffusivity for benzil crystal is found to be superior to few other familiar NLO materials so that it emerges out to be possessed with an advantage which can be utilised for NLO applications. The grown crystal has also been utilised for dielectric analysis for various temperatures. The grown crystal is found to be suitable for nonlinear optical and photonic applications. As of now, among the reported so far, the investigation of thermal parameters for SEST and SR method grown benzil single crystal is reported for the first time in the literature.

光声技术已成为精确测量各种固体材料热物理参数的最重要方法之一。该技术已用于研究苯偶酰（BZ）的非线性光学（NLO）单晶，该单晶是通过缓慢蒸发溶液技术（SEST）和Sankaranarayanan-Ramasamy（SR）技术生长的。发现生长的晶体质量良好；对单晶进行了单晶X射线衍射（XRD）和光声（PA）效应的研究。PA 研究可用于找出一些热物理参数，例如导热率、热扩散率和热流出率。苯偶酰晶体的热扩散率观测值优于其他几种常见的非线性光学材料，因此具有可用于非线性光学应用的优势。生长的晶体还用于各种温度的介电分析。研究发现生长的晶体适用于非线性光学和光子应用。截至目前，在迄今为止的报道中，对SEST法和SR法生长苯偶酰单晶的热参数研究尚属文献首次报道。