scholarly journals Ditch-structured microporous layers fabricated by nanosecond-pulse laser ablation for enhancing water transport in polymer electrolyte membrane fuel cells

2020 ◽  
Vol 1 (2) ◽  
pp. 254-261
Author(s):  
Dong-Hyun Lee ◽  
Min Kyung Kim ◽  
Hwanuk Guim ◽  
Seongmin Yuk ◽  
Jaeho Choi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Laser Ablation ◽  
Polymer Electrolyte ◽  
Water Transport ◽  
Pulse Laser ◽  
Pulse Laser Ablation ◽  
Polymer Electrolyte Membrane ◽  
Nanosecond Pulse ◽  
Electrolyte Membrane ◽  
Nanosecond Pulse Laser

Ditch-structured microporous layers were fabricated by nanosecond-pulse laser ablation for in-plane water transport improvement with various structural designs.

Neutron radiographic in operando investigation of water transport in polymer electrolyte membrane fuel cells with channel barriers

2017 ◽  
Vol 148 ◽  
pp. 604-610 ◽  
Author(s):  
Saad S. Alrwashdeh ◽  
Ingo Manke ◽  
Henning Markötter ◽  
Jan Haußmann ◽  
Nikolay Kardjilov ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Water Transport ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane ◽  
In Operando

Two-step method of nanosecond pulse laser ablation manufacturing of miniature bevel line gears

2020 ◽  
Vol 235 (1-2) ◽  
pp. 255-264
Author(s):  
Yang Zhi Chen ◽  
Xiong Dun Xie
Keyword(s):  
Laser Ablation ◽  
Pulse Laser ◽  
Pulse Laser Ablation ◽  
Nanosecond Pulse ◽  
External Diameter ◽  
Step Method ◽  
Manufacturing Method ◽  
Bevel Gears ◽  
Tooth Width ◽  
Nanosecond Pulse Laser

Miniature gears have important research value and application prospects in micro-scale machinery. The existing manufacturing methods for miniature gears produce spur gears on the micron scale and spur, helical and bevel gears on the millimetre scale. However, there is no mature process for gears on the micron scale for angular transmissions, such as bevel gears. This article reports for the first time the micro-machining of a miniature bevel gear with an external size of 1–2 mm based on a novel gear structure: the bevel line gear. First, a novel manufacturing method, namely the two-step method of nanosecond pulse laser ablation (NSPLA), is proposed. Then, a sample of a miniature bevel line gear is fabricated from 6061 aluminium alloy with a top angle of 90°, external diameter of 1375 μm, tooth number of 3 and average tooth width of 20 μm. Finally, the accuracy of the sample is studied to confirm the practicability of the proposed method.

Experimental Determination of Water Transport in Polymer Electrolyte Membrane Fuel Cells

2010 ◽  
Vol 157 (9) ◽  
pp. B1310 ◽  
Author(s):  
Tak Cheung Yau ◽  
Pierre Sauriol ◽  
Xiaotao T. Bi ◽  
Jürgen Stumper
Keyword(s):  
Fuel Cells ◽  
Experimental Determination ◽  
Polymer Electrolyte ◽  
Water Transport ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane

Femtosecond- and nanosecond-pulse laser ablation of bariumalumoborosilicate glass

1999 ◽  
Vol 69 (7) ◽  
pp. S763-S766 ◽  
Author(s):  
P. Rudolph ◽  
J. Bonse ◽  
J. Krüger ◽  
W. Kautek
Keyword(s):  
Laser Ablation ◽  
Pulse Laser ◽  
Pulse Laser Ablation ◽  
Nanosecond Pulse ◽  
Nanosecond Pulse Laser
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