Results 51 to 60 of about 2,596 (250)

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

Advanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang, Christopher Wöpke, Toni Seiler, Jared Faisst, Mathias List, Meike Kuhn, Bekcy Joseph, Alexander Ehm, Dietrich R. T. Zahn, Yana Vaynzof, Eva M. Herzig, Roderick C. I. Mackenzie, Uli Würfel, Maria Saladina, Carsten Deibel   +14 more
wiley   +1 more source

Study on progressive failure mode of surrounding rock of shallow buried bias tunnel considering strain-softening characteristics

Scientific Reports
Mountain tunnels portal often have to pass through slope terrain unavoidably, thus forming a shallow buried bias tunnel. During the construction of shallow buried bias tunnel, disasters such as slope sliding and tunnel collapse frequently occur.
Xiaoxu Tian, Zhanping Song, Xiaole Shen, Qinsong Xue   +3 more
doaj   +1 more source

Prediction of Collapse Scope of Deep-Buried Tunnels Using Pressure Arch Theory [PDF]

Mathematical Problems in Engineering, 2016
Tunnel collapse remains a serious problem in practice. Effective prediction methods on tunnel collapse are necessary for tunnel engineering. In this study, systematic study on the pressure arch was presented to predict tunnel collapse. Multiple factors under different conditions were considered. First, the pressure arch was described as a certain scope
Yingchao Wang, Hongwen Jing, Qiang Zhang, Ning Luo, Xin Yin   +4 more
openaire   +1 more source

Spin‐On SiOx‐Assisted Inkjet Printing for Interdigitated n+ and p+ Poly‐Si/SiOx Contacts in Silicon Solar Cells With Suppressed Unintended Doping

Advanced Materials Technologies, EarlyView.
This work presents an innovative spin‐on SiOx‐assisted inkjet‐printed approach to form localized n+ and p+ poly‐Si/SiOx passivating contacts for high‐efficiency silicon solar cells within a single‐annealing step. The developed process results in a well‐defined interdigitated doping pattern, with unintended doping and cross‐doping concentrations ...
Jiali Wang, Jinlei Ren, Laura Creon, Paula Peres, Rene Chemnitzer, Pierre‐Yves Corre, Sieu Pheng Phang, Daniel Macdonald, AnYao Liu   +8 more
wiley   +1 more source

Technology and mechanical properties of a shallow-buried biased tunnel approaching in fully weathered granite: A case study of Xiangsi Mountain tunnel

Shuiwen dizhi gongcheng dizhi
As a critical part of a tunnel, the tunnel entrance often encounters issues of shallow burial under bias pressure and poor stability of the surrounding rock.
Dongsheng LI, Yuangui PAN, Yuchao ZHENG
doaj   +1 more source

Study on Deformation Characteristics of Surrounding Rock in Deep‐Buried Tunnels of Plateau Railroads

Advances in Civil Engineering
Regarding the deformation problem of surrounding rock in deep‐buried tunnels of high‐altitude railways, this article adopted a combination of numerical simulation and in situ monitoring analysis methods relying on a new plateau railroad tunnel. The deformation evolution law of tunnel surrounding rock under different burial depth conditions and its ...
Ziguang Zhang, Meng Zhang, Yahui Wang, Lin Wei, Lei Zhang, Biao Leng, Yong He   +6 more
openaire   +2 more sources

Evaluation of Rock Vibration Generated in Blasting Excavation of Deep-buried Tunnels

KSCE Journal of Civil Engineering, 2018
The experimental tunnels of the China Jinping Underground Laboratory are constructed in a maximum overburden depth of 2375 m and subjected to extremely high in situ stress more than 50 MPa. When these deep-buried tunnels are excavated with the method of drill and blast, the surfaces created by blasting are generated almost instantaneously, and thus the
Jianhua Yang, Wenbo Lu, Peng Li, Peng Yan   +3 more
openaire   +1 more source

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke, Moses Kumi, Xiaoming Tao, Junhong Pu   +3 more
wiley   +1 more source

Prediction and classification technology of rockburst hazard in deep buried and high in-situ stress tunnel. [PDF]

Sci Rep
With the increasing number of deep-buried tunnel constructions in China, the possibility of rockburst hazard during tunnel construction in high-stress, hard rock environments also rises. The stress inversion method is initially employed to determine the stress characteristics along the tunnel axis to provide the basis for predicting rockburst hazards ...
Li H, Yang Y, Zhang Z, Tang L.
europepmc   +4 more sources

Information Transmission Strategies for Self‐Organized Robotic Aggregation

Advanced Robotics Research, EarlyView.
In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng, Zihan Li, Yifeng Shao, Jinhao Liu, Li Yu, Shuguang Li   +5 more
wiley   +1 more source