Explanipedia

Design and dynamics of space- station-based one-degree-of-freedom repeatedly deployable exposure platform Open

Junjie Li, Xihan Li, Chong Zhao, Bong-Seok Kang, Yutong Wang , et al. · 2025

Investigation on Effects of Process Parameters on Tissue Fusion Performance and Thermal Damage in Laser-Assisted Vascular Anastomosis Open

Jun Huang, M. X. Luo, Letian Wang, Cui Hao, Jing Nan , et al. · 2025

Fabrication of Highly Conductive Porous Fe3O4@RGO/PEDOT:PSS Composite Films via Acid Post-Treatment and Their Applications as Electrochemical Supercapacitor and Thermoelectric Material Open

Luyao Gao, Fuwei Liu, Qinru Wei, Zhiwei Cai, Jiajia Duan , et al. · 2023

As a remarkable multifunctional material, ferroferric oxide (Fe3O4) exhibits considerable potential for applications in many fields, such as energy storage and conversion technologies. However, the poor electronic and ionic conductivities …

Analysis of the Impact of Newly Built Grounding Grid on the Original Grounding Grid Based on the Method of Moments Open

Letian Wang, Zhen Liu, Mengqing Song, Xuan Zheng, Chenglian Ma · 2023

On the basis of the method of moments, the resistive coupling effect between the newly built grounding network. When the horizontal distance between two grounding networks of a substation changes, this original grounding network of a certa…

Improved active power control of virtual synchronous generator for enhancing transient stability Open

Kongyuan Li, Peng Cheng, Letian Wang, Xinshou Tian, Jing Ma , et al. · 2022

Virtual synchronous generators (VSGs) are widely used as grid‐forming control converters in the inverter‐dominated power system. Similar to synchronous generators (SGs), there would also be transient instability of VSGs under certain condi…

A laser-assisted chlorination process for reversible writing of doping patterns in graphene Open

Yoonsoo Rho, Kyunghoon Lee, Letian Wang, Changhyun Ko, Yabin Chen , et al. · 2022

Electromagnetic Scattering of Near-Field Turbulent Wake Generated by Accelerated Propeller Open

Yuxin Deng, Min Zhang, Wangqiang Jiang, Letian Wang · 2021

The electromagnetic scattering study of the turbulent wake of a moving ship has important application value in target recognition and tracking. However, to date, there has been insufficient research into the electromagnetic characteristics…

Electromagnetic Scattering Model for Far Wakes of Ship with Wind Waves on Sea Surface Open

Letian Wang, Min Zhang, Jiong Liu · 2021

A comprehensive electromagnetic scattering model for ship wakes on the sea surface is proposed to study the synthetic aperture radar (SAR) imagery for ship wakes. Our model considers a coupling of various wave systems, including Kelvin wak…

A 240 × 160 3D-Stacked SPAD dToF Image Sensor With Rolling Shutter and In-Pixel Histogram for Mobile Devices Open

Chao Zhang, Ning Zhang, Zhijie Ma, Letian Wang, Yu Qin , et al. · 2021

A 240 160 single-photon avalanche diode (SPAD) sensor integrated with a 3D-stacked 65nm/65nm CMOS technology is reported for direct time-of-flight (dToF) 3D imaging in mobile devices. The top tier is occupied by backside illuminated SPADs…

Laser enabled ultra-high doping patterns in graphene for rewritable photodetectors Open

Yoonsoo Rho, Kyunghoon Lee, Letian Wang, Changhyun Ko, Yabin Chen , et al. · 2021

Chemical doping has been extensively studied for control of charge carrier polarity and concentration in two-dimensional (2D) van der Waals materials. However, conventional routes by substitutional doping or absorbed molecules suffer from …

Phase change materials in photonic devices Open

Zilun Gong, Fuyi Yang, Letian Wang, Rui Chen, Junqiao Wu , et al. · 2021

Recent developments in reconfigurable photonic devices highly rely on the effective refractive index change enabled by phase change materials (PCMs) as either dielectric surroundings or constituting materials. This universal characteristic…

High-Speed Direct Writing of MoSe<sub>2</sub> by Maskless and Gas-Free Laser-Assisted Selenization Process Open

Yoonsoo Rho, Healin Im, Letian Wang, Matthew Eliceiri, Brian W. Blankenship , et al. · 2020

Transition metal dichalcogenides (TMDCs) have shown exceptional optoelectronic properties that can potentially substitute conventional silicon-based devices and be utilized in sensors and energy devices. To exploit their wide array of pote…

4-Hydroxy- <span>l</span> -Proline as a General Platform for Stereoregular Aliphatic Polyesters: Controlled Ring-Opening Polymerization, Facile Functionalization, and Site-Specific Bioconjugation Open

Jingsong Yuan, Dong Shi, Yi Zhang, Jianhua Lü, Letian Wang , et al. · 2020

Open AccessCCS ChemistryRESEARCH ARTICLE1 Oct 20204-Hydroxy-l-Proline as a General Platform for Stereoregular Aliphatic Polyesters: Controlled Ring-Opening Polymerization, Facile Functionalization, and Site-Specific Bioconjugation Jingsong…

Early dynamics of cavitation bubbles generated during ns laser ablation of submerged targets Open

Jiangyou Long, Matthew Eliceiri, Zacharias Vangelatos, Yoonsoo Rho, Letian Wang , et al. · 2020

In this study, we observe and study the early evolution of cavitation bubbles generated during pulsed laser ablation of titanium targets in different liquid environments utilizing a high-resolution stroboscopic shadowgraphy system. A hydro…

Fabrication of flexible transparent Ag square-shaped mesh electrode by top-flat nanosecond laser ablation Open

Xiaohan Yu, Dongfeng Qi, Qingwei Zhang, Dongwoo Paeng, Xiang Han , et al. · 2019

We report a facile top-flat square nanosecond (ns) laser direct writing ablation technique in a thin silver film substrate to fabricate the silver square-shaped cell structure of flexible transparent electrodes. Square silver cell structur…

High-Speed Photothermal Patterning of Doped Polymer Films Open

Zhengliang Su, Zaira I. Bedolla‐Valdez, Letian Wang, Yoonsoo Rho, Sunny Chen , et al. · 2019

Organic semiconductors (OSCs) offer a new avenue to the next-generation electronics, but the lack of a scalable and inexpensive nanoscale patterning/deposition technique still limits their use in electronic applications. Recently, a new li…

Laser machined ultrathin microscale platinum thermometers on transparent oxide substrates Open

Letian Wang, Zeqing Jin, Dongwoo Paeng, Yoonsoo Rho, Jiangyou Long , et al. · 2019

Phase-change silicon as an ultrafast active photonic platform Open

Letian Wang, Matthew Eliceiri, Yang Deng, Yoonsoo Rho, Wan Shou , et al. · 2019

Phase change material (PCM) features distinct optical or electronic properties between amorphous and crystalline states. Recently, it starts to play a key role in the emerging photonic applications like optoelectronic display, dynamic wave…

A microscale nanosecond time-resolved platinum thermometer probing Gaussian pulsed laser induced temperature Open

Letian Wang, Dongwoo Paeng, Zeqing Jin, He Zhang, Y-S Kim , et al. · 2019

Pulsed laser processing is playing a crucial role in additive manufacturing and nanomaterial processing. However, probing transient temperature during laser interaction with the processed materials is challenging with both high spatial and…

In situ and ex-situ physical scenario of the femtosecond laser-induced periodic surface structures Open

Xiaohan Yu, Dongfeng Qi, Hongyang Wang, Yawen Zhang, Letian Wang , et al. · 2019

Laser-induced periodic surface structures (LIPSS) are a universal phenomenon that can allow tailoring nanoelectronics and nanophotonics devices. However, there is an issue about the formation mechanism of LIPSS, and the current research ma…

THE Simulation Study of DC Grounding Electrode Based on CDEGS and ANSYS Open

Chenglian Ma, Shujian Zhao, Li Sun, Letian Wang, Guangming Zhang · 2018

When the UHVDC project was put into operation, grounding electrode grounding current may affect the transformer in the substation near the pole, it will cause transformer DC bias saturation, which leads to higher transformer temperature ri…

THE Study on the Polar Potential Distribution of DC Grounding in Earth Structures Open

Chenglian Ma, Shujian Zhao, Li Sun, Letian Wang, Tao Wang · 2018

This paper introduced the boundary conditions of the complex soil potential. Then the simulation is carried out with the ANSYS software. And effect of the ground potential distribution in rivers and mountains of the complex geological cond…

Micro‐Electromechanical Switch: A 0.2 V Micro‐Electromechanical Switch Enabled by a Phase Transition (Small 14/2018) Open

Kaichen Dong, Hwan Sung Choe, Xi Wang, Huili Liu, Bivas Saha , et al. · 2018

In article number 1703621, Zheng You, Jie Yao, Junqiao Wu, and co-workers demonstrate a micro-electromechanical (MEM) switch with 0.2 V operating voltage and ≳106 safe operating cycles in ambient air, which is mainly enabled by the abrupt …

A 0.2 V Micro‐Electromechanical Switch Enabled by a Phase Transition Open

Kaichen Dong, Hwan Sung Choe, Xi Wang, Huili Liu, Bivas Saha , et al. · 2018

Micro‐electromechanical (MEM) switches, with advantages such as quasi‐zero leakage current, emerge as attractive candidates for overcoming the physical limits of complementary metal‐oxide semiconductor (CMOS) devices. To practically integr…

Reconfigurable Photonic Platforms: A Lithography‐Free and Field‐Programmable Photonic Metacanvas (Adv. Mater. 5/2018) Open

Kaichen Dong, Sukjoon Hong, Yang Deng, He Ma, Jiachen Li , et al. · 2018

In article number 1703878, Jie Yao, Junqiao Wu, and co-workers demonstrate a lithography-free, rewritable metacanvas, on which nearly arbitrary metaphotonic devices can be rapidly and repeatedly written and erased. The writing is performed…

A Lithography‐Free and Field‐Programmable Photonic Metacanvas Open

Kaichen Dong, Sukjoon Hong, Yang Deng, He Ma, Jiachen Li , et al. · 2017

The unique correspondence between mathematical operators and photonic elements in wave optics enables quantitative analysis of light manipulation with individual optical devices. Phase‐transition materials are able to provide real‐time rec…

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