The obtained freeze-dried cryogels yield thermal conductivity of 23 mW m −1 K −1, with specific surface area of 369.4 m 2 g −1, and porosity of 96.7%, whereas ambient-pressure-dried aerogels exhibit thermal conductivity of 23.6 mW m −1 K −1, specific surface area of 473.8 m 2 g −1, and porosity of 97.4%. Herein, we report silica-based cryogel and aerogel materials by implementing freeze-drying and ambient-pressure-drying processes respectively. 2019, 199-216.Achieving a mesoporous structure in superinsulation materials is pivotal for guaranteeing a harmonious relationship between low thermal conductivity, high porosity, and low density. Characterization of Nanoparticles in Dermal Formulations. Sensitive characterizations of natural dolomite by terahertz time-domain spectroscopy. Sibo Hao, Haochong Huang, Yuanyuan Ma, Zili Zhang, Zhiyuan Zheng.Physical Chemistry Chemical Physics 2020, 22 Probing NaCl hydrate formation from aqueous solutions by terahertz time-domain spectroscopy. Ligang Chen, Guanhua Ren, Liyuan Liu, Pan Guo, Endong Wang, Zhongjie Zhu, Jinrong Yang, Jianxiong Shen, Zongchang Zhang, Lu Zhou, Jianbing Zhang, Bin Yang, Weili Zhang, Yi Gao, Hongwei Zhao, Jiaguang Han.Journal of Infrared, Millimeter, and Terahertz Waves 2021, 42 Reproducibility of Terahertz Peaks in a Frozen Aqueous Solution of 5-Methylcytidine. Physical Chemistry Chemical Physics 2021, 23 The necessity of periodic boundary conditions for the accurate calculation of crystalline terahertz spectra. Nano-dry-salt deposition on electret nonwoven confers anticoronaviral effect while retaining aerosol filtration performance. Dae Hoon Park, Jisoo Choi, Amin Piri, Jungho Hwang, Jeong Hoon Byeon.Three-step one-way model in terahertz biomedical detection. Yan Peng, Jieli Huang, Jie Luo, Zhangfan Yang, Liping Wang, Xu Wu, Xiaofei Zang, Chen Yu, Min Gu, Qing Hu, Xicheng Zhang, Yiming Zhu, Songlin Zhuang.Recent Advances in Terahertz Time-Domain Spectroscopy and Imaging Techniques for Automation in Agriculture and Food Sector. Khushbu S, Yashini M, Ashish Rawson, Sunil C.Physical Chemistry Chemical Physics 2022, 24 Formation of NaCl eutectics in water-in-oil emulsion. The Journal of Physical Chemistry Letters 2020, 11 Terahertz Signatures of Hydrate Formation in Alkali Halide Solutions. Ligang Chen, Guanhua Ren, Liyuan Liu, Pan Guo, Endong Wang, Lu Zhou, Zhongjie Zhu, Jianbing Zhang, Bin Yang, Wentao Zhang, Yanfeng Li, Weili Zhang, Yi Gao, Hongwei Zhao, Jiaguang Han.ACS Sustainable Chemistry & Engineering 2022, 10 Freeze-Dissolving Method: A Fast Green Technology for Producing Nanoparticles and Ultrafine Powder. Qiushuo Yu, Yingchen Wang, Jiaqi Luo, Huaiyu Yang.This article is cited by 11 publications. This finding of single unit-cell-sized particles signifies the importance of studying the freeze-drying process in-depth and offers a new possibility for the development of freeze-drying technology for the manufacture of nanometer-sized particles such as ultrafine pharmaceutical powders, which more readily dissolve in water. In the freezing process, Na + and Cl – ions form two types of metastable unit-cell-sized NaCl particles on the pathway to the well-known NaCl♲H 2O crystal production, which are not listed in the phase diagram of freezing of NaCl solution but have absorption peaks in THz spectra. Here, we detected unit-cell-sized NaCl particles in ice as precursor substances of NaCl♲H 2O during freezing of NaCl solution by using terahertz (THz) spectroscopy. Sodium chloride (NaCl) aqueous solution becomes NaCl hydrate, NaCl♲H 2O, at low temperature, which is different from potassium chloride and is a typical complex model for studying the freeze-drying process in foods and pharmaceuticals.
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