人脐带间充质干细胞外泌体_0.2mg/200ml

外泌体
1. 产品信息
 

2. 产品特性
●  本产品所使用的间充质干细胞经过严格质检，结果符合国家《细胞治疗产品研究与评价技术指导原则》的标 准要求，批次间质量稳定可靠；
●  本产品为间充质干细胞使用无血清培养基规模化培养、收集上清液并使用超速离心法进行标准化制备获得， 同时通过电镜分析、NTA检测、BCA蛋白浓度、标记蛋白Western Blot、无菌检测等质量控制，确保外泌 体产品的质量和安全。
3. 质量控制
 

4. 产品保存
●  外泌体保存温度为-80℃,保质期为半年。
●  产品请于保质期内使用，超过保质期，请勿使用，按照医疗垃圾处理。
5. 注意事项
● 该产品仅限科研使用；
● 为保证产品质量，请勿反复冻融，溶解后尽快使用。

      
  The development of efficient sliding ferroelectric (FE) materials is crucial for advancing next-generation low-power nanodevices. Currently, most efforts focus on homobilayer two-dimensional materials, except for the experimentally reported heterobilayer sliding FE, MoS₂/WS₂. Here, we first screened 870 transition metal dichalcogenide (TMD) bilayer heterostructures derived from experimentally characterized monolayer TMDs and systematically investigated their sliding ferroelectric behavior across various stacking configurations using high-throughput calculations. On the basis of the generated data, we developed an efficient descriptor, named the amplitude of Allen electronegativity difference (Δχ_m), for identifying van der Waals heterobilayers with sliding FE properties. Finally, 16 semiconducting TMD heterobilayers are identified as exhibiting interlayer sliding FE alongside low switching barriers (<21 meV/f.u.), with 10 outperforming the experimental MoS₂/WS₂ system, showing the largest out-of-plane polarization (OPP) values up to 10 times higher than MoS₂/WS₂. These materials exhibit favorable band gaps (0.60-1.80 eV) using the HSE06 method, making them suitable for sliding FE applications. Our findings reveal that polarization switching in these heterobilayers is strongly influenced by the interplay of stacking patterns, material electronegativity, charge transfer, and electronic structures. This study provides a robust framework for designing novel sliding ferroelectric materials and offers a theoretical basis for future experimental research.