Special issue on wide-bandgap semiconductors and applications

Gao, Na; Liu, Bin; Kang, Junyong; Zhang, Rong

doi:10.1088/1361-6463/acafdb

Cited by 2 publications

(1 citation statement)

References 32 publications

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“…Auxetic metamaterials exhibit exceptional mechanical properties due to their counter-intuitive deformation characteristics, making them valuable across various fields including acoustic engineering, [14,32] seismic engineering, [33,34] medical devices, [1,35] smart sensors, [36,37] and protective engineering. [38,39] In recent years, researchers have increasingly explored tensileexpansive materials such as chiral structures, [40][41][42][43] reentrant structures, [27,44] and rotating polygonal structures, [45,46] focusing on their in-plane impact properties. Chiral and antichiral structures demonstrate excellent mechanical attributes including impact and shear resistance, as well as cushioning and vibration absorption, combined with low density and high specific strength.…”

Section: Introductionmentioning

confidence: 99%

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Guang,

Huang,

Deng

2024

Physica Status Solidi (b)

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This study extensively characterizes the out‐of‐plane stiffness and energy harvesting capabilities of a newly proposed anti‐trichiral hierarchical auxetic honeycomb structure, both mechanically and deformationally. By introducing a design concept based on the anti‐trichiral honeycomb (ATCH), a structure with superior out‐of‐plane load‐carrying capacity and excellent auxeticity is achieved. To validate the finite element model, compression simulations are conducted. Comparative investigations into the morphing characteristics and energy harvesting performance between the novel structure and the ATCH are performed. Additionally, the influence of various parameters on the comprehensive performance of the novel auxetic structure is explored. It has been found that the angle φ is most sensitive to the auxetic properties, while the ratio k significantly impacts energy absorption. This research advances the design of novel auxetic structures for potential applications in protective engineering.

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Section: Introductionmentioning

confidence: 99%

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Guang,

Huang,

Deng

2024

Physica Status Solidi (b)

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Enhanced light extraction efficiency of GaN-based green micro-LED modulating by a thickness-tunable SiO₂ passivation structure

Yan,

Hu,

Zhou

et al. 2023

Opt. Express

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Green micro-light emitting diodes (micro-LEDs) is one of the three primary color light sources as full-color display, which serves as a key research object in the field of micro-LED display. As the micro-LED size decreases, the surface-area-to-volume ratio of the device increases, leading to more serious damage on the sidewall by inductively coupled plasma (ICP) etching. The passivation process of SiO2 provides an effective method to reduce sidewall damage caused by ICP etching. In this work, green rectangular micro-LEDs with passivation layer thickness of 0∼600 nm was designed using the finite-difference time-domain (FDTD) simulation. In order to verify the simulation results, the micro-LED array was fabricated by parallel laser micro-lens array (MLA) lithography in high speed and large area. The effect of the SiO2 passivation layer thickness on the performance of the green micro-LED was analyzed, which shows that the passivation layer thickness-light extraction efficiency curve fluctuates periodically. For the sample with 90 nm thickness of SiO2 passivation layer, there exists a small leakage current and higher operating current density, and the maximum external quantum efficiency (EQE) is 2.8 times higher than micro-LED without SiO2 passivation layer.

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Special issue on wide-bandgap semiconductors and applications

Cited by 2 publications

References 32 publications

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Enhanced light extraction efficiency of GaN-based green micro-LED modulating by a thickness-tunable SiO₂ passivation structure

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Special issue on wide-bandgap semiconductors and applications

Cited by 2 publications

References 32 publications

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Out‐of‐Plane Dynamics of a Novel Auxetic Honeycomb with an Anti‐Trichiral Hierarchy

Enhanced light extraction efficiency of GaN-based green micro-LED modulating by a thickness-tunable SiO2 passivation structure

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Enhanced light extraction efficiency of GaN-based green micro-LED modulating by a thickness-tunable SiO₂ passivation structure