330 Result(s)
within
English
Physics
Ri**ang Zhu
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Article
Photonics joint radar and communication system using dual-band LFM-based signals with opposite chirp polarities
A photonics joint radar and communication (JRC) system using dual-band linear frequency modulation (LFM)-based waveforms is proposed and demonstrated. In the scheme, four optical chirp sidebands are generated ...
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On the fluid drag reduction in scallop surface
In the field of biomimetics, the tiny riblet structures inspired by shark skin have been extensively studied for their drag reduction properties in turbulent flows. Here, we show that the ridged surface textur...
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Chemical shift assignments of the ACID domain of MED25, a subunit of the mediator complex in Arabidopsis thaliana
Mediator complex is a key component that bridges various transcription activators and RNA polymerase during eukaryotic transcription initiation. The Arabidopsis thaliana Med25 (aMed25), a subunit of the Mediator ...
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Open AccessCosmological correlators through the looking glass: reality, parity, and factorisation
We consider the evolution of quantum fields during inflation, and show that the total-energy singularities appearing in the perturbative expansion of the late-time Wavefunction of the Universe are purely real ...
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Passive Q-switched fiber laser based on niSe2 saturable absorber
Nickel diselenide (NiSe2) microspheres were synthesized using a chemical vapor deposition (CVD) method, and their nonlinear optical properties were investigated. The prepared NiSe2 exhibits good nonlinear charact...
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Article
The ceramics based on (Bi0.5Li0.5)0.9Sr0.1ZrO3-doped K0.44Na0.55Ag0.01Nb0.95Ta0.05O3 exhibit enhanced structural and electric properties
Currently, in the modification methods of K0.5Na0.5NbO3(KNN) ceramics to enhance their piezoelectric performance, key parameters such as Curie temperature are usually sacrificed. However, this trade-off limits th...
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Open AccessSystematic improvements in transmon qubit coherence enabled by niobium surface encapsulation
We present a transmon qubit fabrication technique that yields systematic improvements in T1 relaxation times. We encapsulate the surface of niobium and prevent the formation of its lossy surface oxide. By maintai...
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Multi-terminal pectin/chitosan hybrid electrolyte gated oxide neuromorphic transistor with multi-mode cognitive activities
In order to fulfill the urgent requirements of functional products, circuit integration of different functional devices are commonly utilized. Thus, issues including production cycle, cost, and circuit crossta...
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Multi-scale detector optimized for small target
The effectiveness of deep learning networks in detecting small objects is limited, thereby posing challenges in addressing practical object detection tasks. In this research, we propose a small object detectio...
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A unified analytical model to calculate no-load power losses for the coexistence of windage-churning phenomenon for spiral bevel gears
Gear churning behavior commonly actively or passively appears in high-speed machinal transmissions of helicopters and new energy electric vehicles. In these high-speed scenarios of churning and windage behavio...
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Article
Magnetic Properties of Topological Material Candidate EuZnBi2
The single crystals of the topological material candidate EuZnBi \(_{2}\) ...
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Nanoarchitectonics of yttrium-doped barium cerate-based proton conductor electrolyte for solid oxide fuel cells
As the third generation of fuel cells, solid oxide fuel cell (SOFC) provides a clean and low-pollution technology. Electrolyte material, which often plays a vital role in SOFC, has always been the focus and di...
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Design an all-optical 10-channel demultiplexer using ultra-narrow bandwidth filters based on nano-ring resonators in square lattice index
In this work, an all-optical 10-channel demultiplexer with ultra-narrow bandwidth filters using resonant cavities in a square 2D photonic crystal is designed and simulated. The rods of the proposed structure w...
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Generation and regulation of electromagnetic pulses generated by femtosecond lasers interacting with multitargets
Ultrashort and powerful laser interactions with a target generate intense wideband electromagnetic pulses (EMPs). In this study, we report EMPs generated by the interactions between petawatt (30 fs, 1.4 × 1020 W/...
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Application of optical medical equipment imaging detection and fire needle therapy for intestinal mucosal barrier function in patients with intestinal diseases
The purpose of this study was to explore the application of optical medical device imaging detection in the treatment of intestinal diseases in patients with fire needle therapy, and to evaluate its effect on ...
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Open AccessExperimental sensing quantum atmosphere of a single spin
Understanding symmetry-breaking states of materials is a major challenge in the modern physical sciences. Quantum atmosphere proposed recently sheds light on the hidden world of these symmetry broken patterns....
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Open AccessQuantifying quantum coherence of multiple-charge states in tunable Josephson junctions
Coherence and tunneling play central roles in quantum phenomena. In a tunneling event, the time that a particle spends inside the barrier has been fiercely debated. This problem becomes more complex when tunne...
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Article
Ambient microwave-to-optical converter
A coherent microwave-to-optical conversion scheme, previously feasible only under cryogenic environments, has now been expanded to ambient conditions by using Rydberg atoms.
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Magnetic phase transition and continuous spin switching in a high-entropy orthoferrite single crystal
Rare-earth orthoferrite REFeO3 (where RE is a rare-earth ion) is gaining interest. We created a high-entropy orthoferrite (Tm0.2Nd0.2Dy0.2Y0.2Yb0.2) FeO3 (HEOR) by do** five RE ions in equimolar ratios and grew...
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Optical constants of gasoline and gasoline mixture
Optical constants play an important role in optical detection of gasoline mixtures. This work investigated the optical constants of 92#, 95#, 98# gasoline and gasoline mixtures. We first obtained the transmitt...
