Results 201 to 210 of about 4,842 (250)

Tannic Acid‐Modified Cellulose Nanofiber Reinforced Polymerizable Eutectogels for High‐Performance Stretchable Strain Sensors

Advanced Functional Materials, EarlyView.
A polymerizable deep eutectic solvent is reinforced with tannic acid‐modified cellulose nanofibers to construct a hierarchical dynamic eutectogel network. Synergistic covalent and reversible interactions impart ultrahigh stretchability, high ionic conductivity, broad temperature tolerance, self‐healing, and strong adhesion, enabling robust wearable ...
Huang Wu, Yang Hu, Youmin Tuo, Weide Zhang, Nanzhu Bao, Haitao Wu, Zhuangzhuang Chu, Yunhua Chen, Tao Wang, Teng Yuan, Hongbo Zeng, Zhuohong Yang   +11 more
wiley   +1 more source

Catalytically Enhanced Near Room‐Temperature Hydrogen Sensing Using Pd‐ZnO Colloidal Crystals

Advanced Functional Materials, EarlyView.
Pd‐decorated ZnO colloidal crystal monolayers demonstrate excellent performance across a wide hydrogen concentration range at 33°C, with high selectivity and reproducible device fabrication. The sensors show strong responses even at low‐ppm H2 concentrations and an ultra‐low detection limit of 82 ppb, indicating their suitability for diverse hydrogen ...
Hamidah Alluhaybi, Samuel J. Ippolito, Chung Kim Nguyen, Durairaj Mahendiran, Michelle J. S. Spencer, Edwin L. H. Mayes, Billy James Murdoch, Jason Choi, Shamali De Silva, James Tardio, Adrian Trinchi, Ahmad E. Kandjani, Mohammad Al Kobaisi, Ylias Sabri   +13 more
wiley   +1 more source

Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture

Advanced Functional Materials, EarlyView.
This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li, Zhangzheng Xiao, Zheng Yan, Adnan Raza Altaf, Qun Song, Dingding Yao, Afshan Sohail, Yixin Wang, Wenxiu Ma, Shanjun Li, Yaohui Chen, Peiwen Liu, Kai Zhang   +12 more
wiley   +1 more source

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Heterogeneous Cellular Network Models With Dependence

IEEE Journal on Selected Areas in Communications, 2015
Due to its tractability, a multitier model of mutually independent Poisson point processes (PPPs) for heterogeneous cellular networks (HCNs) has recently been attracting much attention. However, in reality, the locations of the BSs, within each tier and across tiers, are not fully independent. Accordingly, in this paper, we propose two HCN models with
Martin Haenggi, Na Deng, Wuyang Zhou
exaly   +2 more sources

Heterogeneous Cellular Networks [PDF]

, 2013
This detailed, up-to-date introduction to heterogeneous cellular networking introduces its characteristic features, the technology underpinning it and the issues surrounding its use. Comprehensive and in-depth coverage of core topics catalogue the most advanced, innovative technologies used in designing and deploying heterogeneous cellular networks ...
Hu, Rose Qingyang, Qian, Yi
core   +3 more sources

Network Modeling in Heterogeneous and Cooperative Cellular Communications. [PDF]

, 2016
The rapid increase in use of smart phones and devices has introduced a growing demand in data traffic which the conventional homogeneous macro cells can no longer satisfy. A promising solution to this is by spectrum reuse through deploying various low-power small cells overlaid on the macro cell.
Khan, Aroba
openaire   +2 more sources

Timely throughput of heterogeneous cellular networks

2015 IEEE International Conference on Communications (ICC), 2015
Network densification via deploying dense small cells is one of the dominant evolutions towards future cellular network to increase spectrum efficiency. Packet transmission delay and reliability in the resultant interference-limited heterogeneous cellular network (HCN) are essential performance metrics for system design.
Gong-Zheng Zhang, Aiping Huang, Tony Q. S. Quek, Hangguan Shan   +3 more
openaire   +1 more source

Carrier aggregation in heterogeneous cellular networks

2013 IEEE International Conference on Communications (ICC), 2013
Heterogeneous networks (HetNets) and carrier aggregation (CA) are two distinct features of next-generation cellular networks. Small cells in HetNets are vital for data off-loading and can significantly improve area and cell edge spectral efficiency compared to using just macrocells.
Xingqin Lin, Jeffrey G. Andrews, Rapeepat Ratasuk, Bishwarup Mondal, Amitava Ghosh   +4 more
openaire   +1 more source

Cloud cooperated heterogeneous cellular networks

2013 International Symposium on Intelligent Signal Processing and Communication Systems, 2013
This paper introduces a concept of cloud cooperated heterogeneous cellular network (C-HetNet) where small power pico base stations (BSs) overlaid on a macrocell are connected to cloud radio access network (C-RAN) to operate cooperatively with the macro BS.
Kei Sakaguchi, Seiichi Sampei, Hidekazu Shimodaira, Roya E. Rezagah, Gia Khanh Tran, Kiyomichi Araki   +5 more
openaire   +1 more source

Spatiotemporal Cooperation in Heterogeneous Cellular Networks

IEEE Journal on Selected Areas in Communications, 2015
This paper studies downlink communication in a heterogeneous cellular network where a set of geographically separated base stations (BSs) cooperates in transmitting data to a common receiver. If a decoding error occurs, data is cooperatively retransmitted by a possibly different set of BSs, such that the receiver can benefit from spatiotemporal BS ...
Gaurav Nigam, Paolo Minero, Martin Haenggi   +2 more
openaire   +1 more source