Xiaohan Du
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View article: Single-lens dynamic $$z$$-scanning for simultaneous in situ position detection and laser processing focus control
Single-lens dynamic $$z$$-scanning for simultaneous in situ position detection and laser processing focus control Open
Existing auto-focusing methods in laser processing typically include two independent modules, one for surface detection and another for $$z$$ -axis adjustment. The latter is mostly implemented by mechanical $$z$$ stage motion, which is…
View article: Parametric study of multi-focal laser processing using an ultrafast tunable acoustic lens
Parametric study of multi-focal laser processing using an ultrafast tunable acoustic lens Open
5 pags., 4 figs. -- SPIE LASE, 2022, 4 March 2022, San Francisco, California, United States
View article: Multi-focal laser processing in transparent materials using an ultrafast tunable acoustic lens
Multi-focal laser processing in transparent materials using an ultrafast tunable acoustic lens Open
Fast and versatile alteration of focal positions is critical for applications including selective volumetric modification and parallel laser processing. In this Letter, we implement and characterize an ultrafast, variable focal system usin…
View article: Free-Standing rGO-CNT Nanocomposites with Excellent Rate Capability and Cycling Stability for Na2SO4 Aqueous Electrolyte Supercapacitors
Free-Standing rGO-CNT Nanocomposites with Excellent Rate Capability and Cycling Stability for Na2SO4 Aqueous Electrolyte Supercapacitors Open
Facing the increasing demand for various renewable energy storage devices and wearable and portable energy storage systems, the research on electrode materials with low costs and high energy densities has attracted great attention. Herein,…
View article: On A Snowy Night: Yishan Yining (1247-1317) and the Development of Zen Calligraphy in Medieval Japan
On A Snowy Night: Yishan Yining (1247-1317) and the Development of Zen Calligraphy in Medieval Japan Open
This dissertation is the first monographic study of the monk-calligrapher Yishan Yining (1247-1317), who was sent to Japan in 1299 as an imperial envoy by Emperor Chengzong (Temur, 1265-1307. r. 1294-1307), and achieved unprecedented succe…
View article: Effects of particle size of colloidal nanosilica on hydration of Portland cement at early age
Effects of particle size of colloidal nanosilica on hydration of Portland cement at early age Open
The aim of this study is to evaluate the effects of different particle sizes colloidal nanosilica (30, 60, and 140 nm) on the early performance of Portland cement. Flowability, mechanical property, and microstructural characterization test…
View article: Paper-based Pneumatic Locomotive Robot with Sticky Actuator
Paper-based Pneumatic Locomotive Robot with Sticky Actuator Open
Demands for small-scale and low-cost robots have witnessed a great increase in recent years [1-5]. This paper introduces the design and fabrication of a novel, simple, low-cost and designer-friendly locomotive robot. The materials and tool…