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A Novel Transcriptional Regulator HbERF6 Regulates the HbCIPK2-Coordinated Pathway Conferring Salt Tolerance in Halophytic Hordeum brevisubulatum

Ying Jiang, Ying Jiang, Haiwen Zhang, Haiwen Zhang, Yang Li, Yang Li, Congcong Chang, Congcong Chang, Yunxiao Wang, Yunxiao Wang, Hao Feng, Hao Feng (+2 others)
2022 Frontiers in Plant Science  
., 2013; Feng et al., 2020) . Previous reports have shown that several ERFs can be phosphorylated by MAPK cascade (Jung et al., 2010; Kishi-Kaboshi et al., 2010) .  ... 
doi:10.3389/fpls.2022.927253 pmid:35873960 pmcid:PMC9302439 doaj:3f273dddb47847f1a9853b8c3ec6fb92 fatcat:ygapfap26nbcbfjjsn4lo3smgq

Polarization-locked VCSEL with PM f iber pigtail for quantum communication

Guofeng Xin Guofeng Xin, Li Shen Li Shen, Haoyang Pi Haoyang Pi, Dijun Chen Dijun Chen, Haiwen Cai Haiwen Cai, Huizhong Feng Huizhong Feng, Jianxin Geng Jianxin Geng, Ronghui Qu Ronghui Qu, Gaoting Chen Gaoting Chen, Zujie Fang Zujie Fang, Weibiao Chen Weibiao Chen
2012 Chinese Optics Letters (COL)  
Quantum communication is a new technology requiring a stable and reliable laser source for communication security. A new kind of polarization-locked vertical-cavity surface-emitting laser (VCSEL) with polarization maintaining (PM) fiber pigtail is fabricated as a decoy state laser source. The VCSEL is packaged in a standard butterfly box integrated with thermoelectric coder (TEC) and thermistor. The optical pulse width of full-width at half-maximum (FWHM) is smaller than 400 ps with a 100-MHz
more » ... /off modulation frequency. The results reveal that modulation range is better than 4. Moreover, the polarization is stable, and the power extinction ratio is larger than 25. The center wavelength is 850 nm, and the SMSR is better than 40 dB.
doi:10.3788/col201210.101403 fatcat:7qkg74vigra2fg3a5u65ke4qry

Synthesis of θ-Al2O3 Whiskers with Twins

Nan Liao, Xiaojia Su, Haiwen Zhang, Qingguo Feng, Salvatore Grasso, Chunfeng Hu
2021 Metals  
In this work, θ-Al2O3 whiskers with twins were successfully fabricated by a hydrothermal method followed by annealing at 1000 °C in argon atmosphere using Al2(SO4)3·18H2O, CO(NH2)2 and PEG2000 as initial materials. It is confirmed that precursor of AlO(OH) whiskers is suitable to be used for preparing alumina whiskers when the molar ratio of Al3+: CO(NH2)2 is selected to be 1:6. The mean length of obtained whiskers is 1.5 μm and the average width is 0.1 μm. Interestingly, it is found that the
more » ... -prepared θ-Al2O3 whiskers consist of twins with (100) plane as the twin surface, which is ascribed to the phase transformation from tetragonal phase (δ-Al2O3) to monoclinic phase (θ-Al2O3) during the annealing. Additionally, the specific surface area of θ-Al2O3 whiskers is measured to be 38.2 m2/g.
doi:10.3390/met11060895 fatcat:jp5isknocbgubdeuowffd6nclu

Electronic confinement in quantum dots of twisted bilayer graphene [article]

Xiao-Feng Zhou, Yi-Wen Liu, Hong-Yi Yan, Zhong-Qiu Fu, Haiwen Liu, Lin He
2021 arXiv   pre-print
Electronic properties of quantum dots (QDs) depend sensitively on their parent materials. Therefore, confined electronic states in graphene QDs (GQDs) of monolayer and Bernal-stacked bilayer graphene are quite different. Twisted bilayer graphene (TBG) is distinct from monolayer and Bernal-stacked bilayer graphene because of the new degree of freedom: twist angle. In the past few years, numerous efforts have been made to realize the GQDs of monolayer and Bernal-stacked bilayer graphene and
more » ... ed great success. Thus far, however, strategies for realizing GQDs of TBG have been elusive. Here, we demonstrate a general approach for fabricating stationary GQDs of TBG by introducing nanoscale p-n junctions with sharp boundaries in the TBG. We verify the confinement of low-energy massless Dirac fermions via whispering-gallery modes in the GQDs of TBG. Unexpectedly, electronic states around van Hove singularities of the TBG are also strongly modified around the GQDs. Such a feature has never been reported and is attributed to spatial variation of the interlayer coupling in the TBG induced by the GQDs.
arXiv:2110.10823v1 fatcat:4odebtplcncktecy656ynpjure

Transport study of the wormhole effect in three-dimensional topological insulators [article]

Ming Gong, Ming Lu, Haiwen Liu, Hua Jiang, Qing-Feng Sun, X. C. Xie
2020 arXiv   pre-print
ACKNOWLEDGMENTS We thank Yan-Feng  ... 
arXiv:2005.11721v1 fatcat:r7uk7eloifainpuszxbw6iyulu

Learning to Regress 3D Face Shape and Expression from an Image without 3D Supervision [article]

Soubhik Sanyal, Timo Bolkart, Haiwen Feng, Michael J. Black
2019 arXiv   pre-print
Feng et al. benchmark: Feng et al. [10] describe a benchmark dataset for evaluating 3D face reconstruction from single images.  ...  Recently, Feng et al. [10] organized a single image to 3D face reconstruction challenge where they provided the ground truth scans for subjects.  ... 
arXiv:1905.06817v1 fatcat:hlpw2bjnl5dj3gk6zzueckhkdy

Multi-orbital model reveals second-order topological insulator in 1H-transition metal dichalcogenide [article]

Jiang Zeng, Haiwen Liu, Hua Jiang, Qing-Feng Sun, X. C. Xie
2021 arXiv   pre-print
Recently, a new class of second-order topological insulators (SOTIs) characterized by an electronic dipole has been theoretically introduced and proposed to host topological corner states. As a novel topological state, it has been attracting great interest and experimentally realized in artificial systems of various fields of physics based on multi-sublattice models, e.g., breathing kagome lattice. In order to realize such kind of SOTI in natural materials, we proposed a symmetry-faithful
more » ... orbital model. Then, we reveal several familiar transition metal dichalcogenide (TMD) monolayers as a material family of two-dimensional SOTI with large bulk gaps. The topologically protected corner state with fractional charge is pinned at Fermi level due to the charge neutrality and filling anomaly. Additionally, we propose that the zero-energy corner state preserves in the heterostructure composed of a topological nontrivial flake embedded in a trivial material. The novel second-order corner states in familiar TMD materials hold promise for revealing unexpected quantum properties and applications.
arXiv:2108.12855v1 fatcat:pljlocwn4nhrvjmvfpquskfqzm

Novel Phases of Semi-Conducting Silicon Nitride Bilayer: A First-Principle Study [article]

Jiesen Li, Wanxing Lin, Junjun Shi, Feng Zhu, Weiliang Wang, Haiwen Xie, Dao-Xin Yao
2017 arXiv   pre-print
In this paper, we have predicted the stabilities of several two-dimensional phases of silicon nitride, which we name as α-phase, β-phase, and γ-phase, respectively. Both α- and β-phases has formula Si_2N_2, and are consisted of two similar layer of buckled SiN sheet. Similarly, γ-phase is consisted of two puckered SiN sheets. For these phases, the two layers are connected with Si-Si covalent bonds. Transformation between α- and β-phases is difficult because of the high energy barrier. Phonon
more » ... ctra of both α- and β-phase suggest their thermodynamic stabilities, because no phonon mode with imaginary frequency is present. By Contrast, γ-phase is unstable because phonon modes with imaginary frequencies are found along Γ-Y path in the Brilliouin zone. Both α- and β-phase are semiconductor with narrow fundamental indirect band gap of 1.7eV and 1.9eV, respectively. As expected, only s and p orbitals in the outermost shells contribute the band structures. The p_z orbitals have greater contribution near the Fermi level. These materials can easily exfoliate to form 2D structures, and may have potential electronic applications.
arXiv:1707.02819v1 fatcat:vryx77f3vbec3nappprjord7cm

Towards Racially Unbiased Skin Tone Estimation via Scene Disambiguation [article]

Haiwen Feng, Timo Bolkart, Joachim Tesch, Michael J. Black, Victoria Abrevaya
2022 arXiv   pre-print
Feng, Y. Xiu for proof-reading, and B. Pellkofer for the technical support. Disclosure:. MJB has received research gift funds from Adobe, Intel, Nvidia, Meta/Facebook, and Amazon.  ... 
arXiv:2205.03962v2 fatcat:vpjb3wgi3fguxpmlwcfys3khrm

Tunable Anderson metal-insulator transition in quantum spin-Hall insulators

Chui-Zhen Chen, Haiwen Liu, Hua Jiang, Qing-feng Sun, Ziqiang Wang, X. C. Xie
2015 Physical Review B  
We numerically study disorder effects in Bernevig-Hughes-Zhang (BHZ) model, and find that Anderson transition of quantum spin Hall insulator (QSHI) is determined by model parameters. The BHZ Hamiltonian is equivalent to two decoupled spin blocks which belong to the unitary class. In contrast to the common belief that 2D unitary system scales to insulator except at certain critical points, we find, through calculations scaling properties of the localization length, level statistics, and
more » ... tion ratio, that a possible exotic metallic phase emerges between QSHI and normal insulator phases in InAs/GaSb-type BHZ model. On the other hand, direct transition from QSHI to normal insulator is found in HgTe/CdTe-type BHZ model. Furthermore, we show that the metallic phase originates from the Berry phase and can survive both inside and outside the gap.
doi:10.1103/physrevb.91.214202 fatcat:zhmkcpe2gfeg7jhpdz2ub5i4ca

Time and Frequency Injection into a Stabilized Fiber Link for Multi-clock Dissemination Network [article]

Wei Chen, Jialiang Wang, Qin Liu, Nan Cheng, Zitong Feng, Fei Yang, Youzhen Gui, Haiwen Cai
2016 arXiv   pre-print
Owing to the characteristics of ultra-low loss and anti-electromagnetic interference, using optical fiber to deliver time and frequency signal has been a preferred choice for high precise clock dissemination and comparison. As a brilliant idea, one has been able to reproduce ultra-stable signals from one local station to multiple users. In this paper, we take a step further. A concept of multi-clock (in different locations) dissemination for multi-terminals is presented. By injecting frequency
more » ... ignals into one stabilized ring-like fiber network, the relative stabilities of 3.4e-14@1s for a master clock dissemination and 5.1e-14@1s for a slave clock dissemination have been achieved. The proposed scheme can greatly simplify the future 'N' to 'N' time and frequency dissemination network, especially facing a multi-clock comparison situation.
arXiv:1603.06783v1 fatcat:vbzi3ztrsbaaliesjqhoxgoobu

Edge engineering of a topological Bi(111) bilayer

Xiao Li, Haiwen Liu, Hua Jiang, Fa Wang, Ji Feng
2014 Physical Review B  
A topological insulator is a novel quantum state, characterized by symmetry-protected non-trivial edge/surface states. Our first-principle simulations show the significant effects of the chemical decoration on edge states of topological Bi(111) bilayer nanoribbon, which remove the trivial edge state and recover the Dirac linear dispersion of topological edge state. By comparing the edge states with and without chemical decoration, the Bi(111) bilayer nanoribbon offers a simple system for
more » ... ng conductance fluctuation of edge states. The chemical decoration can also modify the penetration depth and the spin texture of edge states. A low-energy effective model is proposed to explain the distinctive spin texture of Bi(111) bilayer nanoribbon, which breaks the spin-momentum orthogonality along the armchair edge.
doi:10.1103/physrevb.90.165412 fatcat:jtd6saozbrc2nnc7sgylpzgcqi

On Fairness in Face Albedo Estimation

Haiwen Feng, Timo Bolkart, Joachim Tesch, Michael Black, Victoria Abrevaya
2022 Special Interest Group on Computer Graphics and Interactive Techniques Conference Talks  
In particular, we examine the results recently presented in [Feng et al. 2022 ].  ...  In [Feng et al. 2022 ] we additionally proposed a set of metrics targeting specifically the problem of fair albedo estimation.  ... 
doi:10.1145/3532836.3536281 fatcat:b2l4l73ffbcbjli7jgpeix72ei

Topological Imbert-Fedorov Shift in Weyl Semimetals

Qing-Dong Jiang, Hua Jiang, Haiwen Liu, Qing-Feng Sun, X. C. Xie
2015 Physical Review Letters  
The Goos-H\"anchen (GH) shift and the Imbert-Fedorov (IF) shift are optical phenomena which describe the longitudinal and transverse lateral shifts at the reflection interface, respectively. Here, we report the GH and IF shifts in Weyl semimetals (WSMs) - a promising material harboring low energy Weyl fermions, a massless fermionic cousin of photons. Our results show that GH shift in WSMs is valley-independent which is analogous to that discovered in a 2D relativistic material - graphene.
more » ... r, the IF shift has never been explored in non-optical systems, and here we show that it is valley-dependent. Furthermore, we find that the IF shift actually originates from the topological effect of the system. Experimentally, the topological IF shift can be utilized to characterize the Weyl semimetals, design valleytronic devices of high efficiency, and measure the Berry curvature.
doi:10.1103/physrevlett.115.156602 pmid:26550742 fatcat:n32jnxaccveybbvt36ld4nzevu

Tunable Anderson metal-insulator transition in quantum-spin Hall insulators [article]

Chui-Zhen Chen, Haiwen Liu, Hua Jiang, Qing-feng Sun, Ziqiang Wang,, X. C. Xie
2015 arXiv   pre-print
We numerically study disorder effects in Bernevig-Hughes-Zhang (BHZ) model, and find that Anderson transition of quantum spin-Hall insulator (QSHI) is determined by model parameters. The BHZ Hamiltonian is equivalent to two decoupled spin blocks that belong to the unitary class. In contrast to the common belief that a two-dimensional unitary system scales to an insulator except at certain critical points, we find, through calculations scaling properties of the localization length, level
more » ... cs, and participation ratio, that a possible exotic metallic phase emerges between a QSHI and a normal insulator phases in InAs/GaSb-type BHZ model. On the other hand, direct transition from a QSHI to a normal insulator is found in HgTe/CdTe-type BHZ model. Furthermore, we show that the metallic phase originates from the Berry phase and can survive both inside and outside the gap.
arXiv:1504.04172v2 fatcat:lmewr57zf5cqrekzhdvdvn3jcu
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