Article
Engineering, Multidisciplinary
Eleanor R. Russell, Raphael C. Assier, William J. Parnell
Summary: We designed a heat spreader with a special shape to achieve a spatially uniform thermal field. Transformation-based techniques were used to determine the required thermal conductivity, and the materials were approximated by assembling layers or dividing them into components. This design opens up possibilities for manipulating heat flow and solving heat transfer problems in the future.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Multidisciplinary Sciences
Kiyoung Jo, Emanuele Marino, Jason Lynch, Zhiqiao Jiang, Natalie Gogotsi, Thomas P. Darlington, Mohammad Soroush, P. James Schuck, Nicholas J. Borys, Christopher B. Murray, Deep Jariwala
Summary: The authors studied quasi-2D nanoscale emitters on different substrates using tapping mode tip-enhanced spectroscopy. They observed the directional propagation of surface plasmon polaritons launched by the nanoplatelets on Au substrates, visualized as wave-like fringe patterns in near-field photoluminescence maps. The electromagnetic wave simulations confirmed these fringe patterns to be standing waves formed between the tip and the edge-up assembled nano-emitters. They also found that the surrounding dielectric environment of the nanoplatelets can be engineered to control light confinement and in-plane emission. These findings have significant implications in nano and quantum photonics as well as resonant optoelectronics.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Michael Korning Sorensen, Anders Skovbo Gertsen, Rocco Peter Fornari, Binbin Zhou, Xiaotong Zhang, Peter Uhd Jepsen, Edoardo Stanzani, Shinhee Yun, Marcial Fernandez Castro, Matthias Schwartzkopf, Alexandros Koutsioubas, Piotr de Silva, Moises Espindola-Rodriguez, Luise Theil Kuhn, Jens Wenzel Andreasen
Summary: A method is proposed to control the final morphology of roll-to-roll slot-die coated poly(3-hexylthiophene) (P3HT) by optically exciting the p-type polymer during coating. This study demonstrates the relationship between the morphology and physical properties of the thin film by combining density functional theory, molecular dynamics simulations, X-ray experiments, absorption spectroscopy, and THz spectroscopy. It is observed that P3HT films excited with light during deposition exhibit higher crystallinity, texture with more face-on orientation, and increased out-of-plane charge mobility.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruoxu Wang, Fei Han, Bo Chen, Lingmei Liu, Shaoyan Wang, Hua Zhang, Yu Han, Hongyu Chen
Summary: By manipulating the nucleation and growth of solid materials, a general strategy has been presented to synthesize and manipulate nanoscale liquid droplets. Liquid nanoparticles have great potential in various applications and can be manipulated like their solid counterparts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Optics
Zong-Sian Li, Tsan-Wen Lu, Pin-Ruei Huang, Po-Tsung Lee
Summary: We propose and study a plasmonic bowtie notch design with assisted periodic curved grooves to reduce power consumption in experiments and stably trap polystyrene spheres, which can be helpful in realizing highly efficient nano-tweezers in the plasmonic circuit on-chip.
PHOTONICS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Xiaochen Tang, Tianshu Chen, Wenxing Li, Dongsheng Mao, Chenbin Liu, Qi Wu, Nan Huang, Song Hu, Fenyong Sun, Qiuhui Pan, Xiaoli Zhu
Summary: The authors have designed a nanoscale dice device using a DNA cube framework to reproduce probabilistic events in different situations. Artificial molecular machines have the potential to mimic and influence human life, and the key to behavior simulation is to reproduce the specific properties of physical or abstract systems.
NATURE COMMUNICATIONS
(2023)
Article
Optics
Giuseppe Brunetti, Nicola Sasanelli, Mario Nicola Armenise, Caterina Ciminelli
Summary: Plasmonic and dielectric configurations are commonly used for optical trapping at the micro/nanoscale, but have different advantages and challenges. This study proposes a silicon-based dielectric nanobowtie dimer that achieves efficient optical trapping without affecting the temperature of the sample. Numerical simulations demonstrate successful trapping of a virus with high stability and stiffness.
Review
Multidisciplinary Sciences
Francisco J. Garcia-Vidal, Cristiano Ciuti, Thomas W. Ebbesen
Summary: In the past decade, there has been a surge of interest in using hybrid light-matter states to control the properties of matter and chemical reactivity. Experimental and theoretical studies have shown that these hybrid states can enhance properties like transport, magnetism, and superconductivity, as well as modify (bio)chemical reactivity. This multidisciplinary field has great potential for further exploration.
Article
Materials Science, Multidisciplinary
Junqing Guo, Zhenyang Xiao, Ziyu Wu, Xiaxia Liao, Siyuan Wan, Xuewen Fu, Yangbo Zhou
Summary: This study systematically investigates the optical modulation effects of anisotropic 2D materials on isotropic 2D materials in stacked van der Waals heterostructures. The results show that the anisotropic optical properties of the underlying ZrS3 layers have a significant impact on the Raman/PL intensities of MoS2. These anisotropic optical modulation effects can be identified with thin ZrS3 layers due to the strong birefringence and dichroism effects. The polarized photocurrent response of the heterostructure is also demonstrated, with MoS2 as the major contributor.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Hyounghan Kwon, Tianzhe Zheng, Andrei Faraon
Summary: This study proposes nano-electromechanically tunable asymmetric dielectric metasurfaces as a platform for reflective SLMs. By utilizing the strong asymmetric radiation of perturbed high-order Mie resonances, the metasurfaces achieve large phase tuning, high reflection, and a wavelength-scale pixel size. Electrical control of diffraction patterns is also achieved by displacing the Mie resonators using nano-electro-mechanical forces.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Mingda Guo, Hantao Zhang, Ran Cheng
Summary: This study investigates the physical properties of a two-sublattice ferrimagnet (FIM) manipulated by static magnetic fields and current-induced torques. By continuously varying the ratio of sublattice spins, the study clarifies the intrinsic connection between the dynamical chiral modes in a FIM and its ferromagnetic and antiferromagnetic counterparts, revealing unique features not visible near the compensation point. Additionally, the study finds that current-induced torques can trigger the spontaneous oscillation of the terahertz exchange mode in FIMs, which differs from its realization in antiferromagnets by having a reduced threshold current density and self-stabilization without the need for dynamic feedback.
Article
Chemistry, Multidisciplinary
Li Zhang, Ximiao Wang, Huanjun Chen, Chuan Liu, Shaozhi Deng
Summary: The study demonstrates the potential applications of nano-gap structures for signal generation and sensitive chemical sensing at the nanoscale. Arranging the nano-gaps into arrays can improve the signal intensity.
Article
Physics, Multidisciplinary
Sen Yang, Joshua A. Allen, Chuchuan Hong, Kellen P. Arnold, Sharon M. Weiss, Justus C. Ndukaife
Summary: This theoretical study investigates the use of photonic crystal cavities with bowtie defects for low-power nanoscale optical trapping. By utilizing localized heating and an alternating current electric field, particles can be transported towards the bowtie region with average radial velocities of 30 μm/s by switching the input wavelength. Once trapped in the bowtie region, a 10 nm quantum dot can be stably trapped using a mW input power.
PHYSICAL REVIEW LETTERS
(2023)
Article
Health Care Sciences & Services
Hao Li, Wenwen He, Donglin Guo, Yanwen Fang, Jiaqi Meng, Keke Zhang, Xiangjia Zhu, Yi Lu
Summary: The effectiveness of toric intraocular lens implantation in correcting asymmetric corneal astigmatism is uncertain. This study compared the refractive outcomes and residual astigmatic errors in patients with asymmetric and symmetric corneal astigmatism following toric IOL implantation. The Pentacam WFA mode was found to be the most accurate measurement mode for patients with asymmetric astigmatism.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Article
Physics, Multidisciplinary
Richard H. J. Kim, Joong M. Park, Samuel Haeuser, Chuankun Huang, Di Cheng, Thomas Koschny, Jinsu Oh, Cameron Kopas, Hilal Cansizoglu, Kameshwar Yadavalli, Josh Mutus, Lin Zhou, Liang Luo, Matthew J. Kramer, Jigang Wang
Summary: Detecting defects accurately is crucial for the development of superior quantum circuits. The authors use broadband terahertz scanning near-field optical microscopy to non-destructively and contactlessly identify defective boundaries in nano-junctions employed in transmon qubits at an extremely precise nanoscale level. This research is important for overcoming materials bottleneck and optimizing coherence times in superconducting quantum computing.
COMMUNICATIONS PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Yuyu Xia, Jie Wang, Yanbin Zhang, Yuwei Shan, Yunyun Dai, Ang Chen, Tangyao Shen, Shiwei Wu, Xiaohan Liu, Lei Shi, Jian Zi
ADVANCED OPTICAL MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Shuai Zhang, Di Huang, Lehua Gu, Yuan Wang, Shiwei Wu
Summary: Two-dimensional (2D) materials offer novel properties and functionalities due to their superior tunability, but also face challenges from defects and disorders. This study investigates the interaction between individual dopants in the substrate and 2D materials, revealing the formation of electron-hole puddles in epitaxial graphene. These findings are expected to enhance the quality improvement of graphene and other 2D materials.
Article
Optics
Hao Hong, Chunchun Wu, Zixun Zhao, Yonggang Zuo, Jinhuan Wang, Can Liu, Jin Zhang, Fangfang Wang, Jiangang Feng, Huaibin Shen, Jianbo Yin, Yuchen Wu, Yun Zhao, Kehai Liu, Peng Gao, Sheng Meng, Shiwei Wu, Zhipei Sun, Kaihui Liu, Jie Xiong
Summary: The study demonstrates that coating a sub-200-nm-thick quantum dot film on two-dimensional materials can significantly enhance their nonlinear optical responses by more than three orders of magnitude. This enhancement is driven by a non-trivial mechanism of multiphoton-excitation resonance energy transfer, where the quantum dots deliver their strongly absorbed multiphoton energy to the adjacent two-dimensional materials.
Article
Chemistry, Multidisciplinary
Weizhuang Zhuo, Bin Lei, Shuang Wu, Fanghang Yu, Changsheng Zhu, Jianhua Cui, Zeliang Sun, Donghui Ma, Mengzhu Shi, Honghui Wang, Wenxiang Wang, Tao Wu, Jianjun Ying, Shiwei Wu, Zhenyu Wang, Xianhui Chen
Summary: The discovery of magnetism in 2D materials presents new opportunities for exploring novel quantum states and developing spintronic devices. This study demonstrates a significant enhancement of ferromagnetism and magnetic easy-axis switching in few-layered Cr2Ge2Te6 using SIC-FETs, with the easy axis of magnetization tunable by electric fields. Electric gating also increases the Curie temperature and enables further heterostructure engineering on the sample surface in the SIC-FET device configuration, offering potential for electrically controlled quantum phenomena in a single device.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Heming Xia, Xinyu Chen, Song Luo, Feng Qin, Alexander Idelevich, Saptarshi Ghosh, Toshiya Ideue, Yoshihiro Iwasa, Alla Zak, Reshef Tenne, Zhanghai Chen, Wei-Tao Liu, Shiwei Wu
Summary: This study reports an optical SHG study on multiwalled WS2 nanotubes at the single-tube level, revealing multiple structural domains within a single nanotube and observing different chirality within the same tube. Additionally, excitonic states of individual WS2 nanotubes were observed using SHG excitation spectroscopy, overcoming challenges posed by the material's indirect band gap.
Article
Nanoscience & Nanotechnology
Yadong Wang, Susobhan Das, Fadil Iyikanat, Yunyun Dai, Shisheng Li, Xiangdong Guo, Xiaoxia Yang, Jinluo Cheng, Xuerong Hu, Masood Ghotbi, Fangwei Ye, Harri Lipsanen, Shiwei Wu, Tawfique Hasan, Xuetao Gan, Kaihui Liu, Dong Sun, Qing Dai, F. Javier Garcia de Abajo, Jianlin Zhao, Zhipei Sun
Summary: The study demonstrates giant and broadband all-optical ultrafast modulation of second-harmonic generation (SHG) in monolayer transition-metal dichalcogenides by modifying excitonic oscillation strength through optical pumping. The dominant role of dark excitons in enhancing SHG is shown, with modulation amplitude and sign adjustable over a broad spectral range with ultrafast response down to the sub-picosecond scale. This not only introduces an efficient method to study exciton dynamics, but also reveals a new mechanism involving dark excitons in regulating all-optical nonlinear photonics.
Article
Nanoscience & Nanotechnology
Jinhuan Wang, Xiaozhi Xu, Ting Cheng, Lehua Gu, Ruixi Qiao, Zhihua Liang, Dongdong Ding, Hao Hong, Peiming Zheng, Zhibin Zhang, Zhihong Zhang, Shuai Zhang, Guoliang Cui, Chao Chang, Chen Huang, Jiajie Qi, Jing Liang, Can Liu, Yonggang Zuo, Guodong Xue, Xinjie Fang, Jinpeng Tian, Muhong Wu, Yi Guo, Zhixin Yao, Qingze Jiao, Lei Liu, Peng Gao, Qunyang Li, Rong Yang, Guangyu Zhang, Zhilie Tang, Dapeng Yu, Enge Wang, Jianming Lu, Yun Zhao, Shiwei Wu, Feng Ding, Kaihui Liu
Summary: Epitaxial growth of two-inch single-crystal WS2 monolayer films on vicinal a-plane sapphire surfaces has been achieved, driven by a dual-coupling-guided mechanism resulting in unidirectional alignment of WS2 islands. The high quality of WS2 monolayers is evidenced by a photoluminescent circular helicity of about 55%, comparable to exfoliated WS2 flakes. The findings offer the opportunity to boost the production of wafer-scale single crystals of various two-dimensional materials on insulators for applications in integrated devices.
NATURE NANOTECHNOLOGY
(2022)
Article
Optics
Di Huang, Tao Jiang, Yangfan Yi, Yuwei Shan, Yingguo Li, Zhihong Zhang, Kaihui Liu, Wei-Tao Liu, Shiwei Wu
Summary: This study demonstrates the use of optical helicity as an additional tuning parameter for four-wave mixing in gated graphene and reveals the helicity selection rule in monolayer graphene for four-wave mixing.
Article
Materials Science, Multidisciplinary
Yan Wang, Di Zhang, Xue Wang, Ke Zhang, Zhongqiu Cao, Nan Qi, Shiwei Wu, Shuchong Bai, Guode Li
Summary: The Co-Fe-B catalysts were prepared with a hollow structure and optimized for enhanced catalytic performance in hydrogen production. The hydrolysis process was found to be a first-order reaction, with a correlation between hydrogen generation rate and OH- concentration showing a volcano-type trend.
MATERIALS LETTERS-X
(2021)
Article
Chemistry, Physical
Yan Wang, Xue Wang, Jian Ren, Fengyan Xu, Ke Zhang, Zhongqiu Cao, Shiwei Wu, Guode Li
Summary: In this work, cobalt-tungsten-boron (Co-W-B) nanoparticles were successfully deposited on foam Ni substrate using electroless plating technique and applied as thin-film catalysts for hydrogen generation from ammonia borane (NH3BH3) hydrolysis. The physico-chemical properties of Co-W-B nanoparticles were characterized and the optimal catalyst exhibited high catalytic activity and excellent durability. The study also proposed a possible mechanism for the hydrogen generation using the Co-W-B catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Lijie Wang, Wenhao He, Guangyi Huang, Huanyi Xue, Guanqun Zhang, Gang Mu, Shiwei Wu, Zhenghua An, Changlin Zheng, Yan Chen, Wei Li
Summary: This study reports the observation of two-dimensional superconductivity at the interface between a Mott insulator Ti2O3 and a polar semiconductor GaN, with a high transition temperature of up to 3.8 K. A striking quantum metallic state is also observed at the verge of superconductivity, indicating its precursor nature. These findings suggest exciting opportunities for exploiting emergent quantum phenomena at heterointerfaces through heterostructure engineering.
Article
Chemistry, Multidisciplinary
Huanyi Xue, Lijie Wang, Zhongjie Wang, Guanqun Zhang, Wei Peng, Shiwei Wu, Chun-Lei Gao, Zhenghua An, Yan Chen, Wei Li
Summary: This study reports the superconducting properties of LiTi2O4 films with pronounced fourfold rotational symmetry, showing that it is an intrinsic property of the superconducting phase. The study also reveals the unconventional d-wave superconducting Cooper pairs in this superconducting phase.
Article
Materials Science, Multidisciplinary
Haiyue Cong, Jian Ren, Di Zhang, Fengyan Xu, Xue Wang, Yan Wang, Ke Zhang, Zhongqiu Cao, Guode Li, Shiwei Wu
Summary: In this study, double-loaded g-C3N4/Co-W-B/NF catalysts were prepared for the first time using an electroless plating method. The catalytic effects of different gC(3)N(4)/Co-W-B/NF catalysts were investigated for the hydrolysis of NaBH4 solution to release hydrogen (H-2). The g-C3N4/Co-W-B/NF catalyst with a molar ratio of n(Co2+): n(WO42-) value of 5:5 exhibited the best catalytic activity, outperforming the g-C3N4/Co-B/NF catalyst. The addition of W significantly promoted the catalytic performance in NaBH4 hydrolysis under visible light irradiation, reducing the activation energy.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Engineering, Chemical
Honghui Chen, Xue Wang, Di Zhang, Yifan Wu, Ke Zhang, Zhongqiu Cao, Shiwei Wu, Kezhen Qi, Yan Wang, Guode Li, Peng Yu
Summary: This study demonstrates the efficient hydrogen generation from NaBH4 hydrolysis using a noble-metal-free Co-Fe-B catalyst. By optimizing the pH value to 12.0, a filamentous catalyst structure is achieved, which increases the number of active sites and contact area. The ternary Co-Fe-B nanofilaments exhibit superior catalytic performance compared to binary Co-B and Fe-B materials.
DESALINATION AND WATER TREATMENT
(2022)
Review
Chemistry, Physical
Yan Wang, Zhe Hu, WeiHua Chen, Shiwei Wu, Guode Li, Shulei Chou
Summary: Hydrogen energy is proposed as a promising energy replacement to resolve the current energy problems for sustaining the long-term development of human society and eventually achieving the hydrogen economy. Seeking appropriate non-noble metal-based catalysts is the vital step that is needed to improve the sluggish kinetics of the hydrolysis process. The study systematically discusses different non-noble metal-based catalysts and emphasizes the importance of developing sustainable and clean hydrogen energy.
