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Journal Articles

Fused-ring nanothread synthesized via high-pressure polymerization of naphthalene

Fei, Y.*; Wang, Y.*; Zhang, J.*; Liu, J.*; Zhao, Z.*; Hattori, Takanori; Abe, Jun*; Dong, X.*; Mao, H.-K.*; Zheng, H.*; et al.

Chemistry; A European Journal, p.e71096_1 - e71096_11, 2026/00

 Times Cited Count:0

We systematically investigated the high-pressure polymerization of naphthalene, the simplest polycyclic aromatic hydrocarbons (PAHs), using multiple cutting-edge methods. Naphthalene molecules were stacked in herringbone style, and underwent [4+2] cycloaddition reactions along the a-b direction above 20 GPa, yielding one-dimensional Carbon nanothreads (CNThs). In contrast to the formation of many CNThs, the nucleation of the CNThs occurs during compression while their growth proceeds during decompression, which is likely prevalent among herringbone-stacked aromatics. The unit cell of the obtained CNTh crystal is determined and the possible structure of the CNTh product is also proposed. Our research reveals the polymerization characteristics of naphthalene under high pressure, highlighting the fact that the slip-angle plays an important role in governing the polymerization pathway.

Journal Articles

Ordered graphane nanoribbons synthesized via high-pressure diels-alder polymerization of 2,2'-bipyrazine

Li, F.*; Tang, X.*; Fei, Y.*; Zhang, J.*; Liu, J.*; Lang, P.*; Che, G.*; Zhao, Z.*; Zheng, Y.*; Fang, Y.*; et al.

Journal of the American Chemical Society, 147(17), p.14054 - 14059, 2025/04

 Times Cited Count:1 Percentile:32.62(Chemistry, Multidisciplinary)

We synthesized a crystalline graphane nanoribbon (GANR) via pressure-induced polymerization of 2,2'-bipyrazine (BPZ). By performing Rietveld refinement of in situ neutron diffraction data, nuclear magnetic resonance spectroscopy, infrared spectra, and theoretical calculation, we found that BPZ experienced Diels-Alder polymerization between the $$pi$$ $$cdots$$ $$pi$$ stacked aromatic rings, and formed extended boat-GANR structures with exceptional long-range order. The unreacted -C=N- groups bridge the two ends of the boat, and ready for further functionalization. The GANR has a bandgap of 2.25 eV, with booming photoelectric response ($$I_{rm on}$$/$$I_{rm off}$$ =18.8). Our work highlights that the high-pressure topochemical polymerization is a promising method for the precise synthesis of graphane with specific structure and desired properties.

Journal Articles

Quantum spin wave excited from a Cr-Dy single-molecule magnet

Ling, B.-K.*; Chang, M.*; Zhai, Y.-Q.*; Deng, J.*; Kofu, Maiko*; Guo, H.*; Zhao, J.*; Fu, Z.*; Zheng, Y.-Z.*

Journal of the American Chemical Society, 147(13), p.10935 - 10942, 2025/03

 Times Cited Count:8 Percentile:85.89(Chemistry, Multidisciplinary)

Journal Articles

Pressure-induced polymerization of 1,4-difluorobenzene towards fluorinated diamond nanothreads

Che, G.*; Fei, Y.*; Tang, X.*; Zhao, Z.*; Hattori, Takanori; Abe, Jun*; Wang, X.*; Ju, J.*; Dong, X.*; Wang, Y.*; et al.

Physical Chemistry Chemical Physics, 27(2), p.1112 - 1118, 2025/01

 Times Cited Count:4 Percentile:40.73(Chemistry, Physical)

Pressure-induced polymerization (PIP) of aromatic molecules has emerged as an effective method for synthesizing various carbon-based materials. In this work, PIP of 1,4-difluorobenzene (1,4-DFB) was investigated. ${it In situ}$ high-pressure investigations of 1,4-DFB reveal a phase transition at approximately 12.0 GPa and an irreversible chemical reaction at 18.7 GPa. Structural analysis of the product and the kinetics of the reaction uncovered the formation of pseudohexagonal stacked fluoro-diamond nanothreads with linear growth. Compared to the crystal structures of benzene under high pressure, 1,4-DFB exhibits higher compression along the [001] axis. The anisotropic compression is attributed to the stronger H$$cdot cdot cdot pi$$ interaction along the [01$$overline{1}$$] axis and the potential compression-inhibiting H$$cdot cdot cdot$$F interactions along the [100] and [010] axes, and it facilitates a possible reaction pathway along the [01$$overline{1}$$] axis. This work emphasizes the crucial role of functionalization in modulating molecular stacking and influencing the reaction pathway.

Journal Articles

A Predicted CRISPR-mediated symbiosis between uncultivated archaea

Esser, S. P.*; Rahlff, J.*; Zhao, W.*; Predl, M.*; Plewka, J.*; Sures, K.*; Wimmer, F.*; Lee, J.*; Adam, P. S.*; McGonigle, J.*; et al.

Nature Microbiology (Internet), 8(9), p.1619 - 1633, 2023/09

 Times Cited Count:15 Percentile:82.31(Microbiology)

Journal Articles

Magnetic properties and electronic configurations of Mn ions in the diluted magnetic semiconductor Ba$$_{1-x}$$K$$_x$$(Zn$$_{1-y}$$Mn$$_y$$)$$_2$$As$$_2$$ studied by X-ray magnetic circular dichroism and resonant inelastic X-ray scattering

Suzuki, Hakuto*; Zhao, G.*; Okamoto, Jun*; Sakamoto, Shoya*; Chen, Z.-Y.*; Nonaka, Yosuke*; Shibata, Goro; Zhao, K.*; Chen, B.*; Wu, W.-B.*; et al.

Journal of the Physical Society of Japan, 91(6), p.064710_1 - 064710_5, 2022/06

 Times Cited Count:5 Percentile:38.95(Physics, Multidisciplinary)

Journal Articles

Environmental effects on layer-dependent dynamics of Dirac fermions in quasicrystalline bilayer graphene

Zhao, Y.*; Suzuki, T.*; Iimori, T.*; Kim, H.-W.*; Ahn, J. R.*; Horio, Masafumi*; Sato, Yusuke*; Fukaya, Yuki; Kanai, T.*; Okazaki, K.*; et al.

Physical Review B, 105(11), p.115304_1 - 115304_8, 2022/03

 Times Cited Count:2 Percentile:10.72(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Certification of uranium isotope amount ratios in a suite of uranium ore concentrate certified reference materials

Zhang, R.*; Nadeau, K.*; Gautier, E. A.*; Babay, P. A.*; Ramella, J. L.*; Virgolici, M.*; Serban, A. E.*; Fugaru, V.*; Kimura, Yoshiki; Venchiarutti, C.*; et al.

Geostandards and Geoanalytical Research, 46(1), p.43 - 56, 2021/11

 Times Cited Count:10 Percentile:49.98(Geochemistry & Geophysics)

Journal Articles

Coexistence of ferromagnetic and stripe-type antiferromagnetic spin fluctuations in YFe$$_{2}$$Ge$$_{2}$$

Wo, H.*; Wang, Q.*; Shen, Y.*; Zhang, X.*; Hao, Y.*; Feng, Y.*; Shen, S.*; He, Z.*; Pan, B.*; Wang, W.*; et al.

Physical Review Letters, 122(21), p.217003_1 - 217003_5, 2019/05

 Times Cited Count:9 Percentile:50.87(Physics, Multidisciplinary)

Journal Articles

Diluted ferromagnetic semiconductor Li(Zn,Mn)P with decoupled charge and spin doping

Deng, Z.*; Zhao, K.*; Gu, B.; Han, W.*; Zhu, J. L.*; Wang, X. C.*; Li, X.*; Liu, Q. Q.*; Yu, R. C.*; Goko, Tatsuo*; et al.

Physical Review B, 88(8), p.081203_1 - 081203_5, 2013/08

 Times Cited Count:81 Percentile:91.84(Materials Science, Multidisciplinary)

Journal Articles

Spatio-temporal evolution of the L$$rightarrow$$H and H$$rightarrow$$L transitions

Miki, Kazuhiro; Diamond, P. H.*; Fedorczak, N.*; G$"u$rcan, $"O$. D.*; Malkov, M.*; Lee, C.*; Kosuga, Yusuke*; Tynan, G. R.*; Xu, G. S.*; Estrada, T.*; et al.

Nuclear Fusion, 53(7), p.073044_1 - 073044_10, 2013/07

 Times Cited Count:26 Percentile:70.07(Physics, Fluids & Plasmas)

Understanding the L$$rightarrow$$H and H$$rightarrow$$L transitions is crucial to successful ITER operation. In this paper we present novel theoretical and modelling study results on the spatio-temporal dynamics of the transition. We place a special emphasis on the role of zonal flows and the micro$$rightarrow$$macro connection between dynamics and the power threshold dependences. The model studied evolves five coupled fields in time and one space dimension, in simplified geometry. The content of this paper is (a) the model fundamentals and the space-time evolution during the L$$rightarrow$$I$$rightarrow$$H transition, (b) the physics origin of the well-known $$nabla$$ B-drift asymmetry in power threshold, (c) the role of heat avalanches in the intrinsic variability of the L$$rightarrow$$H transition, (d) the dynamics of the H$$rightarrow$$L back transition and the physics of hysteresis.

Journal Articles

Experimental progress on zonal flow physics in toroidal plasmas

Fujisawa, Akihide*; Ido, Takeshi*; Shimizu, Akihiro*; Okamura, Shoichi*; Matsuoka, Keisuke*; Iguchi, Harukazu*; Hamada, Yasuji*; Nakano, Haruhisa*; Oshima, Shinsuke*; Ito, Kimitaka*; et al.

Nuclear Fusion, 47(10), p.S718 - S726, 2007/10

 Times Cited Count:108 Percentile:94.99(Physics, Fluids & Plasmas)

Present status of experiments on zonal flows is overviewed. Innovative use of modern diagnostics has revealed the existence of zonal flows, their spatio-temporal characteristics, their relationship with turbulence, and their effects on confinement. Particularly a number of observations have been accumulated on the oscillatory branch of the zonal flow, dubbed as geodesic acoustic modes suggesting necessity of theories to give their proper description. Several new methods have elucidated the zonal flow generation processes from the turbulence. Further investigation of relationship between the zonal flows and confinement is strongly encouraged as cross-device activity.

Journal Articles

Experimental progress on zonal flow physics in toroidal plasmas

Fujisawa, Akihide*; Ido, Takeshi*; Shimizu, Akihiro*; Okamura, Shoichi*; Matsuoka, Keisuke*; Hamada, Yasuji*; Hoshino, Katsumichi; Nagashima, Yoshihiko*; Shinohara, Koji; Nakano, Haruhisa*; et al.

Proceedings of 21st IAEA Fusion Energy Conference (FEC 2006) (CD-ROM), 12 Pages, 2007/03

Present status of experiments on zonal flows is overviewed. Innovative use of traditional and modern diagnostics has revealed unambiguously the existense of the zonal flows, their spatio-temporal caracteristics, their relationship with turbulence, and their effects on confinement. Particularly, a number of observations have been accumulated on the oscillatory branch of zonal flows, dubbed geodesic acoustic modes, suggesting necessity of theories to give their proper description. Furthur investigation of relationship between zonal flows and confinement is strongly encouraged as cross-device activity.

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