金导体浆料因具有较好的稳定性与可焊性而被广泛应用于低温共烧陶瓷(LTCC)中。金粉的表面形貌、粒径等性质会对金导体浆料产生较大影响。以氯金酸为原料、D-异抗坏血酸为还原剂、阿拉伯树胶为分散剂, 采用不同试验条件制备了纯度较高的三种类球形金粉, 且三种金粉的表面形貌、粒径与比表面积均不同。金粉生长过程属于种子介导的生长方法, 控制Cl-浓度与反应液pH值最终可获得不同形貌与粒径的金粉。研究表明, 三种金粉的比表面积分别为0.740、0.418、0.447 m2·g-1。金粉比表面积显著影响金浆的黏度, 以三种金粉为功能相, 在相同配比下制备LTCC用金导体浆料, 其黏度分别为326、209及214 Pa·s。试验结果表明, 以NaOH溶液溶解氯金酸并调整氯金酸溶液pH值为2, 30%(质量分数)二乙二醇乙醚溶液作还原剂溶剂时制得的金粉为功能相来制备金导体浆料, 烧结后膜层致密度最高、方阻较低以及金丝键合强度最高, 其方阻与金丝键合强度分别为1.11 mΩ/□与866 g, 三种金导体浆料均具有较好的可焊性。

基于废液晶玻璃原料设计了一种新型耐热硼硅玻璃，针对所制耐热玻璃澄清困难，导致玻璃气泡含量多的问题，借助玻璃配合料高温视像研究方法，研究了CeO2、NaCl、Na2SO4、SnO2四种澄清剂对耐热玻璃澄清质量的影响。实验通过高温视像系统对玻璃液澄清过程进行观测，结果表明：在1 600 ℃熔化温度下，NaCl和Na2SO4作为单一澄清剂的添加量分别为0.50%(质量分数)、0.20%(质量分数)时，达到最佳澄清效果；CeO2、SnO2分别与NaNO3复合作为复合澄清剂的添加量为0.40%(质量分数)CeO2+2.60%(质量分数)NaNO3、0.40%(质量分数)SnO2+2.40%(质量分数)NaNO3时，达到最佳澄清效果；玻璃熔体泡沫开始回落时间分别为22、10、20、28 min；开始回落温度分别为1 110、1 050、1 103、1 143 ℃；在最佳保温时长下，采用0.50%(质量分数)NaCl澄清效果最佳。

Remote or standoff detection of greenhouse gases, air pollutants, and biological agents with innovative ultrafast laser technology attracts growing interests in recent years. Hybrid femtosecond/picosecond coherent Raman spectroscopy is considered as one of the most versatile techniques due to its great advantages in terms of detection sensitivity and chemical specificity. However, the simultaneous requirement for the femtosecond pump and the picosecond probe increases the complexity of optical system. Herein, we demonstrate that air lasing naturally created inside a filament can serve as an ideal light source to probe Raman coherence excited by the femtosecond pump, producing coherent Raman signal with molecular vibrational signatures. The combination of pulse self-compression effect and air lasing action during filamentation improves Raman excitation efficiency and greatly simplifies the experimental setup. The air-lasing-assisted Raman spectroscopy was applied to quantitatively detect greenhouse gases mixed in air, and it was found that the minimum detectable concentrations of CO₂ and SF₆ can reach 0.1% and 0.03%, respectively. The ingenious designs, especially the optimization of pump-seed delay and the choice of perpendicular polarization, ensure a high detection sensitivity and signal stability. Moreover, it is demonstrated that this method can be used for simultaneously measuring CO₂ and SF₆ gases and distinguishing ¹²CO₂ and ¹³CO₂. The developed scheme provides a new route for high-sensitivity standoff detection and combustion diagnosis.

采用烧结影像法探讨了低温非结晶型封接玻璃特征烧结影像温度与封接温度的对应关系, 对低温非结晶型封接玻璃的特征烧结形态进行了影像-温度实验, 通过对比玻璃特征烧结影像温度与封接温度, 探寻二者间的相互对应关系, 为考核验证低温非结晶型封接玻璃封接温度提供一种规范、便捷的检测方法。实验结果表明, 低温非结晶型封接玻璃特征烧结影像温度与封接温度之间存在高度匹配的对应关系, 通过烧结影像法可以考核验证低温非结晶型封接玻璃的封接温度。

PbOCaOB2O3SiO2系玻璃粉体是耐高过载低温共烧陶瓷（LTCC）生瓷带的主要组成部分。玻璃粉体的析晶行为影响烧结性能，进而决定基板的使用性能。本文研究了Al2O3含量对PbOCaOB2O3SiO2系玻璃析晶行为与烧结性能的影响。结果表明：向PbOCaOB2O3SiO2系玻璃中引入Al2O3可抑制玻璃析晶，防止高膨胀晶相的析出，并提高玻璃烧结密度；不含Al2O3的PbOCaOB2O3SiO2玻璃粉体析晶峰温度为862 ℃，烧结过程中析出方石英晶相，20~200 ℃的平均线膨胀系数高达260.8×10-7 ℃-1；引入2.1%(质量分数)Al2O3可显著抑制玻璃析晶，700 ℃烧结后膨胀系数降低至72.9×10-7 ℃-1，介电常数显著增大，由6.30提高至7.02。

本文探究了蓖麻油、BYK22552、聚乙烯吡咯烷酮（PVP）、TEGO700四种分散剂对CaOB2O3La2O3玻璃/氧化铝低温共烧陶瓷（LTCC）流延浆料分散性的影响，并进一步对该体系浆料流变性能、触变性能、固相体积分数以及沉降性能方面进行了研究,通过红外光谱分析研究了四种分散剂的分散机理并给出了解释。结果表明，当分散剂TEGO700用量为粉体质量的2%时，流延浆料具有最小黏度（1 650 mPa·s）与最佳触变恢复性。在流延成型最佳黏度2 000 mPa·s下，浆料具有最大固相体积分数（37.2%）与优异的沉降性能。该浆料流延成型得到的柔性生瓷带表面平整且厚度均一，表面粗糙度为144 nm。烧结得到的基板材料表面无气孔、裂纹等明显缺陷，烧结致密化程度高，表面粗糙度为210 nm，40 GHz下测得介电常数与介电损耗分别为6.257和1.431×10-3。

Photodynamic therapy (PDT) is a new and rapidly developing treatment modality for clinical cancer therapy. Semiconductor polymer dots (Pdots) doped with photosensitizers have been successfully applied to PDT, and have made progress in the field of tumor therapy. However, the problems of severe photosensitivity and limited tissue penetration depth are needed to be solved during the implementation process of PDT. Here we developed the Pdots doped with photosensitizer molecule Chlorin e6 (Ce6) and photochromic molecule 1,2-bis(2,4-dimethyl-5-phenyl-3-thiophene)-3,3,4,5-hexafluoro-1-cyclopentene (BTE) to construct a photoswitchable nanoplatform for PDT. The Ce6-BTE-doped Pdots were in the green region, and the tissue penetration depth was increased compared with most Pdots in the blue region. The reversible conversion of BTE under different light irradiation was utilized to regulate the photodynamic effect and solve the problem of photosensitivity. The prepared Ce6-BTE-doped Pdots had small size, excellent optical property, efficient ROS generation and good photoswitchable ability. The cellular uptake, cytotoxicity, and photodynamic effect of the Pdots were detected in human colon tumor cells. The experiments in vitro indicated that Ce6-BTE-doped Pdots could exert excellent photodynamic effect in ON state and reduce photosensitivity in OFF state. These results demonstrated that this nanoplatform holds the potential to be used in clinical PDT.Photodynamic therapy (PDT) is a new and rapidly developing treatment modality for clinical cancer therapy. Semiconductor polymer dots (Pdots) doped with photosensitizers have been successfully applied to PDT, and have made progress in the field of tumor therapy. However, the problems of severe photosensitivity and limited tissue penetration depth are needed to be solved during the implementation process of PDT. Here we developed the Pdots doped with photosensitizer molecule Chlorin e6 (Ce6) and photochromic molecule 1,2-bis(2,4-dimethyl-5-phenyl-3-thiophene)-3,3,4,5-hexafluoro-1-cyclopentene (BTE) to construct a photoswitchable nanoplatform for PDT. The Ce6-BTE-doped Pdots were in the green region, and the tissue penetration depth was increased compared with most Pdots in the blue region. The reversible conversion of BTE under different light irradiation was utilized to regulate the photodynamic effect and solve the problem of photosensitivity. The prepared Ce6-BTE-doped Pdots had small size, excellent optical property, efficient ROS generation and good photoswitchable ability. The cellular uptake, cytotoxicity, and photodynamic effect of the Pdots were detected in human colon tumor cells. The experiments in vitro indicated that Ce6-BTE-doped Pdots could exert excellent photodynamic effect in ON state and reduce photosensitivity in OFF state. These results demonstrated that this nanoplatform holds the potential to be used in clinical PDT.