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Oct 7, 2024 | 
pubs.aip.org | Sebastian Schulz |S. Tian |Joachim Würfl
The excellent complementary metal-oxide-semiconductor compatibility and rich physicochemical properties of hafnia-based materials, in particular the unique ferroelectricity that surpasses of conventional ferroelectrics, make hafnia-based devices promising candidates for industrial applications.
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Oct 4, 2024 | 
pubs.aip.org | Sebastian Schulz |S. Tian |Joachim Würfl
Topics
HOMO and LUMO,
Density functional theory,
Excited state energies,
Electric fields,
Thin films,
Computational physics,
Molecular properties,
Stark effect
Molecular color centers (MCCs), recently discovered optically addressable electric spin molecular qubits, show promise as a quantum sensing platform.
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Oct 3, 2024 | 
pubs.aip.org | Aerospace Engineering |Sebastian Schulz |S. Tian |Joachim Würfl
The accuracy of single particle (SP) models for lithium-ion batteries at high C-rates is constrained by lithium concentration gradients in the electrolyte, which affect ionic conductivity, overpotential, and reaction rates. This study addresses these limitations using extreme gradient boosting machine learning (ML). By training our ML model with data from a comprehensive electrochemical (P2D) model and performing sensitivity analysis on key battery parameters, we enhance predictive accuracy.
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Oct 3, 2024 | 
pubs.aip.org | Beijing Normal |Sebastian Schulz |S. Tian |Joachim Würfl
Barium fluoride (BaF ) scintillators are known for their various applications in high-energy particle detection due to their ultrafast scintillation component that lies within the deep ultraviolet spectral band. However, their slow scintillation component can cause issues in high-rate applications. The slow component can be suppressed by ion-doping, whereas the fast component should be enhanced to further improve the performance of BaF scintillators.
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Oct 3, 2024 | 
pubs.aip.org | Sebastian Schulz |S. Tian |Joachim Würfl
Obstructed thermal transport across interfaces is the main cause of serious heat dissipation issues in electronics. Analogous to heterointerface in heterostructure, homointerface is another widely existing interface, such as grain boundary (GB) in polycrystal.
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Oct 2, 2024 | 
pubs.aip.org | Sebastian Schulz |S. Tian |Joachim Würfl
Citation
Kangyao WenJiaqi HeYang JiangFangzhou DuChenkai DengPeiran WangChuying TangWenmao LiQiaoyu HuYuhan SunQing WangYulong JiangHongyu Yu; Charge trapping gate stack enabled non-recessed normally off AlGaN/GaN HEMT with high threshold voltage stability. Appl. Phys. Lett. 30 September 2024; 125 (14): 142105. https://doi.org/10.1063/5.0230096
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Sep 16, 2024 | 
pubs.aip.org | Sebastian Schulz |Joachim Würfl |S. Tian
Though photonic computing systems offer advantages in speed, scalability, and power consumption, they often have a limited dynamic encoding range due to low signal-to-noise ratios. Compared to digital floating-point encoding, photonic fixed-point encoding limits the precision of photonic computing when applied to scientific problems.
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Sep 11, 2024 | 
pubs.aip.org | Joachim Würfl |Sebastian Schulz |S. Tian
Citation
Chang LiuYanbo QiuCaifeng ZhouHao Dong; Tunable long-lived exciton lifetime and high carrier mobilities in Group III A elements doped two-dimensional blue phosphorene: A time domain ab initio study. Appl. Phys. Lett. 9 September 2024; 125 (11): 114103. https://doi.org/10.1063/5.0219326
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Sep 10, 2024 | 
pubs.aip.org | Beijing Jiaotong |Joachim Würfl |Sebastian Schulz |S. Tian
The solution-processed methylammonium lead tri-iodine (MAPbI ), with long spin lifetimes and large spin diffusion lengths, has merit for developing stable perovskite spin valves (PeSV) with low saturation fields. By far, it remains challenging to avoid ill-defined ferromagnet-MAPbI interfaces during device fabrications using solution methods and to quantify the hybridized interfacial electronic and magnetic structures.
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Sep 9, 2024 | 
pubs.aip.org | Beijing Academy |Joachim Würfl |Sebastian Schulz |S. Tian
Bismuth-based binary alloy β-Bi Pd has recently been suggested as a connate topological superconductor with immense promise for Majorana zero modes. However, the epitaxial thin films down to the ultimate level of single unit-cell have been challenging. Here, we employed the state-of-the-art molecular beam epitaxy to prepare single unit-cell superconducting β-Bi Pd films with lateral dimensions of hundreds of nanometers.
