Device
·
2025
·
IF 8
Chunjiang Wang,Xiaoming Chen,Qihang Song,Jianxu Shi,Mengyong Lei,Duo Ma,Xiangming Li,Xiaoliang Chen,Hongmiao Tian,Chunhui Wang,Jie Zhang,Yang Lu,Jinyou Shao
Biometric electronics have gained considerable attention in self-sensing, three-dimensional (3D) designs, mechanical drive, and multi-function integration. By leveraging these anisotropic capabilities into devices, metamaterial offers a promising pathway to exciting performance-oriented units. However, such distinctive mismatches in forming processes and inherent material properties are severely restricted in achieving cross-scaled microstructures, causing compatibility issues among well-defined bio-functions and fabrication. Herein, we propose an investment micro-casting 3D printing strategy for custom-molding multi-metamaterials without process barriers. This approach handles the bottlenecks of the hierarchical template replacement in ultra-hydrophobicity microchannels for the free assembly of more than 20 types of challenging-to-form materials. A series of piezoelectric metamaterials are programmed with broadband ranges, imitating nerve distribution that has human-feel touch, bending, and recognition. Our work benefits the stiffness self-perception in dynamic grabbing manipulation, broadening the application of multimodal electronics in bio-embodied robots.
研究领域:
生物医学工程
·
材料科学
·
电子工程
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yu Liu,Gan Yuan,Fei Xie,Yang An,Jianwen Sun,Ning Zhao,Yongbo Deng,Longnan Li,Subhash C. Singh,Chi-Vinh Ngo,Wei Li,Chunlei Guo
Water, sanitation, and hygiene (WASH) investments have become crucial not only to prevent and recover from pandemics and local outbreaks but also to prevent the spread of antimicrobial resistance . However, over 2 billion people worldwide still have access to even poor sanitation, which devastates public health and social and economic development. In addition, inadequate sanitation can cause contamination to drinking water sources where exist insufficient protection, exacerbating clean water scarcity. Here, we introduce a femtosecond laser processing technology combined with silicone oil coating to prepare a slippery surface that can repel feces, named the fecalphobic surface. Compared to a flat surface, the fecalphobic surface requires only a quarter amount of water (on average) or even no water to remove sticky viscoelastic solid-like fecal simulants. Besides, various liquids will slide off this surface. Moreover, the simulant slides off the fecalphobic surface much faster than off an untreated one, approximately 3–26 times faster depending on their weight. The mechanism of the fast sliding of fecal simulants is explained. Moreover, the fecalphobic surface is installed on a latrine prototype that integrates an automatic trap door and a urine-feces separator for improved sanitation solution.
研究领域:
生物医学工程
·
公共卫生
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
BUSINESS HISTORY REVIEW
·
2011
·Vol. 74
·期 4
·611-656
·
IF 0.684
Barry E.C. Boothman
The development of the pulp and paper sector has been a highly controversial subject in Canadian business history. During the 1920s, there was a rapid growth of capacity (which reached twice the level of market demand) and a series of mergers as different firms sought to attain giant size. By 1928 several leading companies were experiencing difficulties, and by 1932 half of the producers were bankrupt while the remainder hovered on the brink of insolvency. These developments had their own logic and were driven by strategic issues and the formation of an institutional market for industrial securities. As corporate executives propelled their firms into dubious strategies characterized by excess production and unrealistic dividend policies, the status of the newsprint producers was obscured from investors by financial and accounting practices, thereby contributing to a flood of investment, which was followed by corporate collapse. The attempts to reorganize the companies began a complex process that lasted anywhere from several years to more than a decade.
研究领域:
商业历史
·
公司金融
·
产业经济学
·
会计学
·
投资管理
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Rui Chen,Xun Liu,Mengxia Wang,Yufei Shu,Meng Zhang,Bei Liu,Zhongying Wang
The desalination of seawater/wastewater utilizing flow-electrode capacitive deionization (FCDI) has received significant interest. However, challenges like the low electrical conductivity of flow electrode and excessive energy consumption have prevented the scaling up of desalination operations. To overcome these issues, this study introduces a new FCDI system termed the two-stage FCDI (TS-FCDI) system, in which desalination modules are equipped with freestanding and flow electrode. The TS-FCDI system offers a graded desalination module design that produces an average salt removal rate (ASRR) of 113 µg cm 2 ·min −1 . However, the TS-FCDI system requires substantially reduced infrastructure investment, device size, and energy expenses. Notably, the design allows for the simultaneous operation of freestanding and flow electrode and enables the transport of ions and charges in the electrode region. Experimental evidence from multiple device configurations (CDI, FCDI, and TS-FCDI) supports this claim. Notably, the TS-FCDI system shows about twice the desalination performance over FCDI, with approximately 50 h of single-cycle (SC) operation. This enhancement links the freestanding electrode with the flow electrode, enabling the device to be well-suited for practical applications. The continuous flow of electrode particles in contact with the freestanding electrode initiates secondary ion transport, merging two different types of electrodes to enhance the active space of the electrode, effectively improving ion adsorption performance. In summary, the results of this study indicate the potential of the TS-FCDI system as a suitable desalination technology for scaling up applications.
研究领域:
环境科学
·
水处理
·
脱盐技术
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）