Results 81 to 90 of about 71,683 (272)

Biological Synthesis of CdS/CdSe Core/Shell Nanoparticles and Its Application in Quantum Dot Sensitized Solar Cells

Frontiers in Microbiology, 2019
In the present work, we report the use of bacterial cells for the production of CdS/CdSe Core/Shell quantum dots (QDs), a complex nanostructure specially designed to improve their performance as photosensitizer in photovoltaic devices.
Nicolás Órdenes-Aenishanslins, Giovanna Anziani-Ostuni, Carolina P. Quezada, Rodrigo Espinoza-González, Denisse Bravo, José M. Pérez-Donoso   +5 more
doaj   +1 more source

Decoupling the Impact of Deep‐Trap and Band‐Tail States on PbS Quantum Dot Photodetectors via Alkylamine Engineering

Advanced Materials Technologies, EarlyView.
Band‐tail and deep trap states are effectively disentangled through the use of selective alkylamine additives. PA‐driven 2D ordering narrows band tails, while HA enhances halide passivation and Pb coordination to suppress deep traps. A comparative study of their CQD short‐wave infrared (SWIR) photodetectors further reveals whether band‐tail states or ...
Huaying Zhong, Fan Fang, Jasper Guido Ebel, Qian Chen, Lixin Li, Kaiyu Luo, Yihan Song, Andong Zhong, Haibo Zhu, Xiao Wang, Kaijie Ling, Yong Xia, Haodong Tang, Wei Chen, Peter Müller‐Buschbaum   +14 more
wiley   +1 more source

Determination of Thermal History by Photoluminescence of Core-shelled Quantum Dots Going Through Heating Events

, 2014
A kind of novel thermal history nanosensors were theoretically designed and experimentally demonstrated to permanently record thermal events. The photoluminescence spectrum of core-shelled quantum dots CdSe/ZnS irreversibly shifted with heating histories
Chen, G., Chen, X., Lan, Y., Lu, Y., Ren, Z., Skula, N., Wang, H.   +6 more
core   +1 more source

A Nanoparticle‐Integrated Complete Manufacturing Pipeline of Chemically Engineered Exosomes

Advanced Science, EarlyView.
We report a novel manufacture technology of chemically engineered exosomes. The four steps of manufacturing, i.e., biogenesis, loading, isolation, and storage, are integrated by the use of a nanoparticle. The manufacture technology incorporates three innovative components, i.e., a new nano‐bio effect, a new composite nanoparticle, and a new isolation ...
Xiaowei Wen, Zixing Xu, Zerun Hao, Yanming Chen, Kai Xie, Haofan Yin, Xueying Wang, Jie Min, Sihan Sun, Baiding Chen, Chengxiu Ling, Mingming Xu, Yizhao Chen, Gang Ruan   +13 more
wiley   +1 more source

Graphene quantum dots in alveolar macrophage: uptake-exocytosis, accumulation in nuclei, nuclear responses and DNA cleavage

Particle and Fibre Toxicology, 2018
Background Given the tremendous potential for graphene quantum dots (QDs) in biomedical applications, a thorough understanding of the interaction of these materials with macrophages is essential because macrophages are one of the most important barriers ...
Lina Xu, Yanhui Dai, Zhenyu Wang, Jian Zhao, Fei Li, Jason C. White, Baoshan Xing   +6 more
doaj   +1 more source

GaAs/GaP quantum dots: Ensemble of direct and indirect heterostructures with room temperature optical emission

, 2015
We describe the optical emission and the carrier dynamics of an ensemble of self-assembled GaAs quantum dots embedded in GaP(001). The QD formation is driven by the 3.6 % lattice mismatch between GaAs and GaP in Stranski-Krastanow mode after deposition ...
Boeck, T., Dadgostar, S., Hatami, F., Jiménez, J., Martínez, O., Masselink, W. T., Mogilatenko, A., Schmidtbauer, J., Tomm, J. W., Torres, A.   +9 more
core   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Enhanced blue emission in silica‐confined mixed‐halide perovskite quantum dots via releasing residual stress

InfoMat
Perovskite quantum dots (QDs) confined within solid matrices via calcination methods exhibit superior environmental stability compared to colloidal perovskite QDs.
Jiayi Huang, Kehao Wang, Peng Wang, Xingliang Dai, Zhizhen Ye, Haiping He, Chao Fan   +6 more
doaj   +1 more source

PEC‐DFM Hybrid‐Sensor Based on Nanoparticle‐Resolved Estimation for Sensitive and Reversible Glucose Monitoring

Advanced Science, EarlyView.
Abstract The accurate detection of glucose in wound exudate is critically important for monitoring chronic wound healing. While photoelectrochemical (PEC) sensors are widely used, they often suffer from material degradation caused by redox reactions during operation. Herein, we introduce a dark‐field microscopy (DFM) setup integrated with a PEC system,
Zihao Zhang, Junzheng Liu, Qinggong Wu, Yuan Zeng, Gang Xiao, Zhao Yue, Zhigang Zang, Shuang Zhao   +7 more
wiley   +1 more source

Superior Properties and Biomedical Applications of Microorganism-Derived Fluorescent Quantum Dots

Molecules, 2020
Quantum dots (QDs) are fluorescent nanocrystals with superb photo-physical properties. Applications of QDs have been exponentially increased during the past decade.
Mohamed Abdel-Salam, Basma Omran, Kathryn Whitehead, Kwang-Hyun Baek   +3 more
doaj   +1 more source