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Efficient photoinduced charge transfer in chemically-linked organic-metal Ag-P3HT nanocomposites
Download2016-01-01
Feng, Lin, Chen, Ming, Zheng, Fei, Niu, Meng-Si, Zhang, Xuehua, Hao, Xiao-Tao
A novel nanocomposite of P3HT and Ag nanoparticles (Ag-P3HT) has been synthesized by laser ablation. The fluorescence wavelength of the nanocomposite can be tuned by varying the ablation duration. The steady-state emission maximum at 580 nm for pristine P3HT shows significant blueshift to...
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A mechanism study of acid-assisted oxidative stabilization of asphaltene-derived carbon fibers
Download2021-10-01
Leistenschneider, Desirée, Zuo, Peiyuan, Kim, Yuna, Abedi, Zahra, Ivey, Douglas G., de Klerk, Arno, Zhang, Xuehua, Chen, Weixing
The development of inexpensive carbon fiber precursors is necessary to meet the future demands of carbon fibers. This work shows how asphaltenes, which are obtained as a by-product in bitumen production, can play an important role as such inexpensive carbon fiber precursors. To synthesize carbon...
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Computational fluid dynamics investigation of bitumen residues in oil sands tailings transport in an industrial horizontal pipe
Download2023-01-01
Sontti, Somasekhara Goud, Sadeghi, Mohsen, Khou, Kaiyu, Zheng, Enzu, Zhang, Xuehua
Pipeline transport is commonly used in the oil sand industry to convey crushed oil sand ores and tailings. Bitumen residues in the oil sand tailings can be a threat to the environment that separating them from tailings before disposal is crucial. However, low bitumen concentration in the tailing...
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Concave microlens arrays with tunable curvature for enhanced photodegradation of organic pollutants in water: A non-contact approach
Download2023-11-01
Lu, Qiuyun, Li, Yanan, Kassim, Kehinde, Xu, Ben Bin, El-Din, Mohamed Gamal, Zhang, Xuehua
Solar-driven photodegradation for water treatment faces challenges such as low energy conversion rates, high maintenance costs, and over-sensitivity to the environment. In this study, we develop reusable concave microlens arrays (MLAs) for more efficient solar photodegradation by optimizing light...
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Control of boundary slip by interfacial nanobubbles: A perspective from molecular dynamics simulations
Download2023-01-01
Ynag, Haichang, Zeng, Binglin, Zhang, Xuehua, Xing, Yaowen, Gui, Xiahui, Cao, Yijun
Enhancing boundary slip using interfacial nanobubbles (INBs) has gained significant interest in nanofluidic transport. In this study, we conducted a comprehensive investigation on the influence of INBs on boundary conditions for both smooth and rough substrates using molecular dynamics...
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Effects of Gas Type, Oil, Salts and Detergent on Formation and Stability of Air and Carbon Dioxide Bubbles Produced by Using a Nanobubble Generator
Download2023-04-01
Zhou, Kaiyu, Maugard, Vincent, Zhang, Wenming, Zhou, Joe, Zhang, Xuehua
Recent developments in ultrafine bubble generation have opened up new possibilities for applications in various fields. Herein, we investigated how substances in water affect the size distribution and stability of microbubbles generated by a common nanobubble generator. By combining light...
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2015-12-01
Liu, Xiumei, Bao, Lei, Dipalo, Michele, De Angelis, Francesco, Zhang, Xuehua
Bubble formation from plasmonic heating of nanostructures is of great interest in many applications. In this work, we study experimentally the intrinsic effects of the number of three-dimensional plasmonic nanostructures on the dynamics of microbubbles, largely decoupled from the effects of...
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2015-01-01
Zhang, Xuehua, Lu, Ziyang, Tan, Huanshu, Lohse, Detlef
Nanodroplets on a solid surface (i.e., surface nanodroplets) have practical implications for high-throughput chemical and biological analysis, lubrications, laboratory-on-chip devices, and near-field imaging techniques. Oil nanodroplets can be produced on a solid–liquid interface in a simple step...
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2018-07-01
Wang, Yuliang, Zaytsev, Mikhail E., Lajoinie, Guillaume, The, Hai Le, Eijkel, Jan C.T., van den Berg, Albert, Versluis, Michel, Wekhuysen, Bert M., Zhang, Xuehua, Zandvliet, Harold J., Lohse, Detlef
When illuminated by a laser, plasmonic nanoparticles immersed in water can very quickly and strongly heat up, leading to the nucleation of so-called plasmonic vapor bubbles. While the long-time behavior of such bubbles has been well-studied, here, using ultrahigh-speed imaging, we reveal the...