鉴于2023年国内市场利率持续偏低,穗信云链把握机遇,加强与各大金融机构的紧密合作,以更高效率、更低利率为中小企业提供信贷支持。集团不仅全面支持新一代票据及供应链票据受理,还加强银行承兑汇票受理,与近10家银行合作。随着穗信云链服务受理能力的进一步提升,2023年交易规模突破百亿元,较去年同比增长131%。其中票据业务同比增长185%,带动金融科技服务板块经营利润达4,300万港元,同比增长190%。
Sample SE T /dB SE R /dB SE A /dB SE A /SE R /% SSE t /(dB·(cm −2 ·g) −1 ) M3-MX-0 5.0 0.9 4.0 4.3 87.6 M3-MX-5 6.8 1.5 5.3 3.5 147.5 M3-MX-10 7.2 1.7 5.5 3.2 171.0 M3-MX-15 7.0 1.7 5.3 3.0一直m3-ag@mx-15 69.0 10.3 58.7 5.7 2 356.6 m3-ag@mx-20 68.2 10.3 57.8 5.6 2 719.8 m3-ag@mx-25 67.9 10.0 57.0 57.9 5.8 2 439.4 2 439.4
lah 10(T C = 250 K),Drozdov和Al。(2019)LAH 10(T C = 260 K),Somayazalu和Al。(2019)YH 9(T C = 243 K),Kong和Al。(2019)YH 6(T C = 224 K),Troyan和Al。(2019)CAH 6(T C = 215 K),但等。(2021)CAH 6(T C = 210 K),Li和Al。(2022)SH 3(T C = 203 K),Drozdov和Al。(2015)THH 10(T C = 161 K),Semenoch和Al。(2019)CEH 10(T C = 115 K),Chen和Al。(2021)CEH 9(T C = 100K),Chen和Al。(2021)YH 4(T C = 88 K),Shao和Al。(2021)BAH 12(T C = 20 K),Chhen和Al。(2021)SNH X(T C = 70K),Hong和Al。(2022)
This work presents an air-coupled piezoelectric micromachined ultrasonic transducer (pMUT) with high transmitting acoustic pressure by using sputtered potassium sodium niobate (K,Na)NbO 3 (KNN) thin film with a high piezoelectric coefficient (e 31 ~ 8-10 C/m 2 ) and low dielectric constant ( r ~ 260-300) for the first time.已经测试了以104.5 kHz为谐振频率的制造的KNN PMUT,已测试以表现出前所未有的结果:(1)在10 cm的距离为109 db/v的高声压水平(SPL)为10 cm,比基于ALN的PMUT的频率高8倍; (2)仅4伏峰峰幅度的低压操作(V P-P); (3)良好接收灵敏度。因此,这项工作介绍了一类新的高SPL和低驾驶电压PMUT,用于在包括但不限于触觉反馈,扬声器和AR/VR系统在内的各个领域的潜在应用中。关键字
最近,将高熵引入各种用于不同应用的材料引起了研究人员的兴趣越来越大,并促进了一系列单相多层(等极)材料的快速发展。[1-4]在无序的多组分系统中,大型构型熵被认为可以稳定晶体结构,从而传递高渗透效果(HE)效应,即,熵驱动的施加效果以及相关的“鸡尾酒”效应由阳离子混合以及化学和结构多样性产生。[1,4,5] Within the past few years, a large number of high-entropy materials (HEMs), represented first by high-entropy alloys (HEAs) [1,5–8] and later by high- entropy oxides (HEOs), [3,9–13] have been utilized in a broad range of applications, including environmental protection, elec- trochemical energy storage, and thermo- electric and catalytic applications.在电池材料中,最近的几份报告表明,高熵的引入可以大大改善循环性能,例如,在HEO和高渗透氧气中(HEOFS)。[9,10,14–24] In a previous study by our group, rock-salt (Co 0.2 Cu 0.2 Mg 0.2 Ni 0.2 Zn 0.2 )O was proposed as a promising anode material for lithium-ion batteries (LIBs), with a unique entropy- stabilized Li-storage mechanism, guaranteeing the reversible conversion reaction and leading to improved cycling stability and Coulombic efficiency.[25,26]另一个针对电化学应用的限制是,据报道,HEO在电化学循环期间会经历不利的相位,这可以使其成为[9]此外,HU和同事在层状O3型HEO上报道了钠离子电池(SIBS)的互嵌型阴极[10],表现出良好的长期可环性和速率性能,并促进宿主矩阵的熵稳定。然而,高注册材料的缺点是它们的制备通常涉及具有高能量成本的程序,例如(高能量)球磨碎或高温处理(> 900°C),并且可以容易容易出现相位分离(例如,对于多物质纳米属粒子)。
Figure 12.1540-MeV 209Bi ion irradiation 1.7 × 10 11 ions/cm 2 TEM images of AlGaN/GaN HEMT devices: (a) Gate region cross-section; (b) The orbital image of the heterojunction region shown in Figure (a); (c) The image shown in Figure (a) has a depth of approximately 500 nm; (d) Traces formed at the drain; (e) As shown in Figure (d), the trajectory appears at a depth of ap- proximately 500 nm [48] 图 12.1540-MeV 209Bi 离子辐照 1.7 × 10 11 ions/cm 2 的 AlGaN/GaN HEMT 器件的 TEM 图像: (a) 栅极区域截面; (b) 图 (a) 所示异质结区域轨道图 像; (c) 图 (a) 所示深度约 500 nm 图像; (d) 在漏极形成的痕迹; (e) 如图 (d) 所示,轨迹出现在深度约 500 nm 处 [48]