Article
Nanoscience & Nanotechnology
Fatemeh Davoodi, Nahid Talebi
Summary: Van der Waals materials such as TMDCs exhibit strongly bound exciton states in the visible spectrum, providing an ideal platform for exciton-photon couplings. Utilizing nanometer-thick semiconducting TMDCs combined with metals can significantly increase light-matter interaction. In gold-WSe2 multilayers, both exciton A and exciton B can strongly interact with surface-plasmon polaritons, leading to CL emission suppression and revealing energy transfer between excitons and plasmons in the form of nonradiating guided waves.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Mahfujur Rahaman, Gwangwoo Kim, Kyung Yeol Ma, Seunguk Song, Hyeon Suk Shin, Deep Jariwala
Summary: The exciton control in transition metal dichalcogenides (TMDCs) and their heterostructures has fundamental importance for applications in optoelectronic and photonic devices. In this study, the behavior of intra- and interlayer excitons in TMDC heterobilayers under the quantum tunneling regime was explored using a metallic probe in an atomic force microscope. The results revealed significantly different exciton-plasmon coupling for intra- and interlayer excitons due to the orientation of the dipoles of the electron-hole pairs. The findings have important implications for near-field probing of excitonic materials in the strong-coupling regime.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Qing-Hua Xu, Jia Shi, Zexin Lin, Ziyu Zhu, Jiadong Zhou, Guo Qin Xu
Summary: The optoelectronic properties of two-dimensional transition metal dichalcogenide monolayers, such as WS2, are largely determined by excitons. The study demonstrates that incorporating a plasmonic cavity enhances the nonlinear optical properties of WS2, allowing for the precise determination of high order Rydberg excitonic states.
Article
Chemistry, Multidisciplinary
Dileep Kottilil, Mayank Gupta, Shunbin Lu, Anu Babusenan, Wei Ji
Summary: In this study, a large polariton interaction strength is demonstrated in a 2D nanolayered metal-organic framework (MOF) at room temperature, which allows for polariton lasing at low pump fluence. The experiment observes polariton lasing under extremely low pump fluence and a spontaneous transition to a breakdown region, followed by ordinary photon lasing as the pump fluence increases. This work introduces MOF as a cost-effective and scalable solution for microscale coherent quantum light sources and polaritonic devices.
ADVANCED MATERIALS
(2023)
Correction
Optics
Caixia Kan, Yuting Wu, Juan Xu, Peng Wan, Mingming Jiang
Summary: In accordance with the OSA Open Access Publishing Agreement, we have provided a revised figure and corrected related expressions for our previous publication (C) 2021 Optical Society of America.
Article
Chemistry, Multidisciplinary
Marko M. Petric, Malte Kremser, Matteo Barbone, Anna Nolinder, Anna Lyamkina, Andreas Stier, Michael Kaniber, Kai Mueller, Jonathan J. Finley
Summary: The combination of nanoplasmonic systems and optically active two-dimensional materials allows for the exploration and control of light-matter interactions at extreme subwavelength length scales. This study investigates the characteristics of a MoSe2 monolayer on individual gold dipole nanoantennas at room and cryogenic temperatures. The results reveal tuning of the dipolar resonance relative to the exciton and a coupling constant between exciton and plasmon, demonstrating active control of the coupling by varying the excitation light polarization.
Article
Materials Science, Multidisciplinary
F. A. Benimetskiy, A. Yulin, A. O. Mikhin, V Kravtsov, I. Iorsh, M. S. Skolnick, I. A. Shelykh, D. N. Krizhanovskii, A. K. Samusev
Summary: Recently reported large values of exciton-polariton nonlinearity of transition metal dichalcogenide (TMD) monolayers coupled to optically resonant structures approach the values characteristic for GaAs-based systems in the regime of strong light-matter coupling. Contrary to the latter, TMD-based polaritonic devices remain operational at ambient conditions and therefore have greater potential for practical nanophotonic applications.
Article
Chemistry, Multidisciplinary
Yungang Sang, Chun-Yuan Wang, Soniya S. Raja, Chang-Wei Cheng, Chiao-Tzu Huang, Chun-An Chen, Xin-Quan Zhang, Hyeyoung Ahn, Chih-Kang Shih, Yi-Hsien Lee, Jinwei Shi, Shangjr Gwo
Summary: The study introduces a diffraction-unlimited approach using tunable plasmonic resonance and coupling strength, which can be applied in non-Hermitian photonics with features like seamless integration of two-dimensional materials, broadband tuning, and operation at room temperature.
Article
Chemistry, Multidisciplinary
Bebeto Rai, Prasad Sarma, Venkatesh Srinivasan, Manikoth M. Shaijumon, Sai Sathish Ramamurthy
Summary: This study successfully achieved fluorescence enhancement of single-photon quantum emitters on the SPCE platform by utilizing the structure-dependent properties exhibited by WS2 nanosheets. Additionally, the cellphone-based detection method presented a low-cost alternative compared to high-end detectors.
Article
Nanoscience & Nanotechnology
Philipp Gagel, Tristan H. Harder, Simon Betzold, Oleg A. Egorov, Johannes Beierlein, Holger Suchomel, Monika Emmerling, Adriana Wolf, Ulf Peschel, Sven Hoefling, Christian Schneider, Sebastian Klembt
Summary: Implementing concepts of topological protection in photonics has provided a new degree of freedom for photonic devices. In this work, arrays of coupled microresonators were used to achieve exciton-polariton lasing from a topological domain boundary defect. By manipulating doping levels and applying a bias voltage, control over the condensation behavior of polaritons in the topological mode was demonstrated. The ability to switch lasing between the topological defect and a trivial mode was also shown, suggesting the potential for ultrafast, topologically protected photonic switches at the single photon level.
Article
Chemistry, Multidisciplinary
Jie Fang, Kan Yao, Mingsong Wang, Zhuohang Yu, Tianyi Zhang, Taizhi Jiang, Suichu Huang, Brian A. Korgel, Mauricio Terrones, Andrea Alu, Yuebing Zheng
Summary: In this study, we achieved on-demand exciton-polariton emission from a wide range of TMDs at room temperature by hybridizing excitons with broadband Mie resonances. The system demonstrated stable polaritonic photoluminescence and multiple Rabi splittings.
Article
Materials Science, Multidisciplinary
Michael D. Fraser, H. Hoe Tan, Yago del Valle Inclan Redondo, Hima Kavuri, Elena A. Ostrovskaya, Christian Schneider, Sven Hoefling, Yoshihisa Yamamoto, Seigo Tarucha
Summary: The use of high energy proton implantation allows for precise and independent manipulation of both exciton and photon energies in GaAs microcavity exciton-polaritons. This technique involves post-growth proton implantation and annealing steps to induce small local interdiffusion, resulting in energy shifts in exciton or photon components. The polariton mode can be tuned by more than 10 meV, altering the effective mass for photon and exciton energy shifts, while maintaining narrow-linewidth polariton emission and condensation.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shimei Liu, Fu Deng, Weijie Zhuang, Xiaobing He, Hongxin Huang, Jing-Dong Chen, Huajian Pang, Sheng Lan
Summary: In this study, we successfully achieved coupling between plasmons, excitons, and trions in a dielectric-metal hybrid nanocavity, and manipulated the coupling strength optically. Our findings indicate the possibility of optically controlling plasmon-exciton interaction and suggest the practical applications of dielectric-metal hybrid nanocavities in nanoscale plasmonic devices.
Article
Engineering, Electrical & Electronic
Baokun Song, Honggang Gu, Mingsheng Fang, Zhengfeng Guo, Yen-Teng Ho, Xiuguo Chen, Hao Jiang, Shiyuan Liu
Summary: The study highlights the importance of investigating and synthesizing p-type semiconductors in 2D MoS2 and demonstrates the modulation of exciton peak combination in 2D MoS2 by niobium doping. The fabrication of a p-type FET based on 2D Nb-doped MoS2 is also presented, with potential for adjustable performance based on the concentration of the Nb dopant according to theoretical research. This research is crucial for understanding the optical and electronic properties of extrinsic 2D transitional metal dichalcogenides and for the development and optimization of photonics and optoelectronics devices.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Kang Qin, Zong-yan Zuo, Sheng Peng, Kai Liu, Hui Yang, Qi-hang Zhang, Yan-qing Lu, Yong-yuan Zhu, Xue-jin Zhang
Summary: This study presents a measurement method for the optical parameters of 2D van der Waals materials using surface/interface plasmon polariton waves. The complex optical conductivities of 2D materials are measured by interference behavior, and this method can be applied to small-sized monolayers as well as other newly developed materials and various types of 2D van der Waals materials.
ADVANCED OPTICAL MATERIALS
(2023)
Review
Physics, Applied
Rajesh, Zhaoli Gao, A. T. Charlie Johnson, Nidhi Puri, Ashok Mulchandani, D. K. Aswal
Summary: Chemical species adsorbed on the surface of graphene can alter the concentration of charge carriers, affecting the material's electronic properties and enabling graphene-based sensors to detect a wide range of biomolecules, chemicals, and gas/vapors. Chemical vapor deposition grown graphene has been proven to be the most prominent route to large-scale device production. However, a comprehensive review on scalable, macro-sized, chemical vapor-deposited graphene-based field-effect transistor sensors is still lacking.
APPLIED PHYSICS REVIEWS
(2021)
Article
Biology
Nicolette Driscoll, Richard E. Rosch, Brendan B. Murphy, Arian Ashourvan, Ramya Vishnubhotla, Olivia O. Dickens, A. T. Charlie Johnson, Kathryn A. Davis, Brian Litt, Danielle S. Bassett, Hajime Takano, Flavia Vitale
Summary: The study presents a technique to map the onset and spatiotemporal spread of acute epileptic seizures in vivo by recording high bandwidth microelectrocorticography and calcium fluorescence simultaneously. By integrating dynamic data features from both modalities, sequential spatiotemporal patterns of seizure onset and evolution were identified, revealing the link between the temporal progression of ictal electrophysiology and the spatial evolution of the recruited seizure core. This integrated analysis of multimodal data enables future targeted therapeutic interventions and novel spatially embedded models of local circuit dynamics during seizure onset and evolution.
COMMUNICATIONS BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Xingdu Qiao, Bikashkali Midya, Zihe Gao, Zhifeng Zhang, Haoqi Zhao, Tianwei Wu, Jieun Yim, Ritesh Agarwal, Natalia M. Litchinitser, Liang Feng
Summary: A higher-dimensional supersymmetry formalism was developed for precise mode control and nonlinear power scaling in integrated photonics, leading to high-radiance, small-divergence, and single-frequency laser emission in supersymmetric microlaser arrays. This approach also demonstrates the feasibility of structuring high-radiance vortex laser beams, enhancing laser performance by utilizing spatial degrees of freedom of light, and providing a route for designing large-scale integrated photonic systems in both classical and quantum regimes.
Article
Nanoscience & Nanotechnology
Kelotchi S. Figueroa, Natalya A. Zimbovskaya, Nicholas J. Pinto, Chengyu Wen, A. T. Charlie Johnson
Summary: The study investigated charge transport near the Dirac point in graphene using ferroelectric gating, finding non-monotonic conductivity near the point. Theoretical analysis suggested that impurity charge compensation and temperature-dependent charge separation may be responsible for this phenomenon.
Article
Nanoscience & Nanotechnology
Xingwang Zhang, Wenzhuo Huang, Chawina De-Eknamkul, Kedi Wu, Meng-qiang Zhao, Sefaattin Tongay, Alan T. Charlie Johnson, Ertugrul Cubukcu
Summary: This study successfully demonstrates the directional and azimuthally polarized excitonic emission from a monolayer tungsten diselenide integrated with deep subwavelength tungsten disulfide circular gratings, enabling spatial manipulation at the deep subwavelength scale. The high refractive index of tungsten disulfide allows the existence of guided mode resonances in nanoscale heterostructures, facilitating the coupling of excitonic photoluminescence and the emission of an azimuthally polarized and symmetric beam in the momentum space.
Article
Multidisciplinary Sciences
Xiao-Chong Yu, Shui-Jing Tang, Wenjing Liv, Yinglun Xu, Qihuang Gong, You-Ling Chen, Yun-Feng Xiao
Summary: An ultrasensitive optofluidic biosensor based on microbubble cavity with interface whispering gallery modes is reported, which has a low detection limit and small sample consumption, enabling the detection of single DNA.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Materials Science, Multidisciplinary
Aiqin Hu, Weidong Zhang, Wenjing Liu, Hong Jiang, Lulu Ye, Ying Gu, Zhaohang Xue, Hai Lin, Jinglin Tang, Qihuang Gong, Guowei Lu
Summary: This study reveals the significant influence of plasmonic phase delay on the asymmetrical spectrum line shape of a plasmon-exciton coupling system. The phase effect was demonstrated in a hybrid system consisting of monolayer WSe2 and a gold nanorod, and it was found that the phase delay can modulate the intensity of the coupling modes.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Kelotchi S. Figueroa, Natalya A. Zimbovskaya, Nicholas J. Pinto, Chengyu Wen, A. T. Charlie Johnson
Summary: Charge transport in graphene far from the Dirac point under ferroelectric gating was studied. Non-monotonic/monotonic/non-monotonic behavior in conductivity was observed. The gate polarization compensated impurity charges and reduced charge scattering. The non-monotonic response in conductivity reappeared far from the Dirac point due to phonon scattering.
Article
Chemistry, Analytical
Vidia A. Gokool, Janet Crespo-Cajigas, Amritha Mallikarjun, Amanda Collins, Sarah A. Kane, Victoria Plymouth, Elizabeth Nguyen, Benjamin S. Abella, Howard K. Holness, Kenneth G. Furton, Alan T. Charlie Johnson, Cynthia M. Otto
Summary: In this study, the performance of trained detection dogs and a noninvasive analytical instrumentation method were compared in identifying COVID-19 positive individuals. The results showed that dogs performed better than the computational model when faced with non-ideal samples.
Article
Chemistry, Physical
Deyi Zhang, Ze Yang, Wenjing Liu, Xingru Yan, Qin Liu, Xiaodong Li, Changshui Huang, Yuliang Li
Summary: Due to the high content of sp-hybridized carbon atoms, carbyne based materials exhibit superior conductivity and ultra-high theoretical capacity, making them ideal for high-performance anode applications. However, the synthesis of carbyne alternating carbon-carbon triple and single bonds faces challenges due to instability of synthetic intermediates and unwanted side reactions. In this study, a smart Greedy Snake strategy was employed to synthesize Si capped alkyne rich carbon (Si-Alkyne-C) materials, which showed excellent stability and high capacity as anode electrodes. The Si-Alkyne-C materials were prepared on a copper surface through carbon-carbon coupling, with Si effectively protecting the intermediates generated during the reaction. The resulting Si-Alkyne-C exhibited a reversible capacity of up to 2776 mAh/g at a current density of 50 mA/g and an average capacity of approximately 1202 mAh/g at a high current density of 5000 mA/g for 5000 cycles, outperforming other carbon and anode materials. These findings not only provide a facile method for preparing carbyne based materials, but also open up possibilities for high-capacity anode material synthesis.
Article
Multidisciplinary Sciences
Qicheng Zhang, Li He, Eugene J. Mele, Bo Zhen, A. T. Charlie Johnson
Summary: Integrated phononics plays a crucial role in fundamental physics and technology. This study investigates the use of piezomagnetic materials to break time-reversal symmetry and achieve topological phases and non-reciprocal devices. The authors develop a theoretical framework that combines linear elasticity with Maxwell's equations and demonstrate the existence of phononic Chern insulators based on piezomagnetism.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Qu Zhang, Yunke Zhu, Peiran Niu, Chenghao Lao, Yige Yao, Wenjing Liu, Qi-Fan Yang, Saisai Chu, Yunan Gao
Summary: The ASE and lasing characteristics of a new type of NPL with low thresholds and a wide spectral range are investigated. Micro lasers based on silicon nitride substrates demonstrate ultralow lasing thresholds and clean single-mode emissions. The development of low threshold NPLs in a broad spectral range will greatly facilitate the realization of nanocrystal-based lasers.
Article
Chemistry, Multidisciplinary
Erick Arguello Cruz, Pedro Ducos, Zhaoli Gao, Alan T. Charlie Johnson, Dario Niebieskikwiat
Summary: In this study, the effect of ferromagnetic nickel nanoparticles on the magnetotransport properties of chemical-vapor-deposited graphene was characterized. It was found that these nanoparticles greatly suppressed the zero-field peak of resistivity caused by weak localization and enhanced the high-field magnetoresistance. The interaction between the graphene and the nickel nanoparticles was attributed to a local exchange coupling, which did not affect the intrinsic transport parameters of graphene, indicating that the changes in magnetotransport properties were purely magnetic in origin.
Article
Nanoscience & Nanotechnology
Nishal Shah, Vasant Iyer, Zhiping Zhang, Zhaoli Gao, Juhwan Park, Venkata Yelleswarapu, Firooz Aflatouni, A. T. Charlie Johnson, David Issadore
Summary: We developed CMOS-compatible graphene Hall sensors integrated with PDMS microfluidics for magnetic sensing in blood, which can overcome the limitations of traditional technologies in clinical applications, and show high sensitivity and reliability. They can also be integrated with microfluidics and sensing electronics for in-flow detection of magnetic beads.
MICROSYSTEMS & NANOENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Anis Chiout, Cleophanie Brochard-Richard, Laetitia Marty, Nedjma Bendiab, Meng-Qiang Zhao, A. T. Charlie Johnson, Fabrice Oehler, Abdelkarim Ouerghi, Julien Chaste
Summary: A study has found that the frequency of nanomechanical resonators can be effectively tuned at the nanoscale using a suspended MoS2 membrane heated by the Joule effect, with a significantly larger modulation amplitude compared to other approaches. This research is crucial for fully harnessing the potential of two-dimensional materials.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
