Replication of rose petal surfaces using a nickel electroforming process and UV nanoimprint lithography

Spherical abrasives were employed to polish the growing deposited layer during nickel electroforming process. On a translational flat cathode, nickel deposits with distinct polishing mark were obtained. It was found that the abrasive polishing can help to improve the microstructure and increase the mechanical properties of the nickel deposits. Compared with the deposits prepared with traditional method, the microstructure became more homogeneous and the microhardness increased nearly two times. The increase of current density led to coarse structure and lower microhardness.

Download Full-text

Abrasive-assisted Nickel Electroforming Process with Moving Cathode

Chinese Journal of Mechanical Engineering ◽

10.1007/s10033-017-0078-4 ◽

2017 ◽

Vol 30 (2) ◽

pp. 294-300 ◽

Cited By ~ 1

Author(s):

Jianhua REN ◽

Zengwei ZHU ◽

Chunqiu XIA ◽

Ningsong QU ◽

Di ZHU

Keyword(s):

Electroforming Process ◽

Nickel Electroforming

Download Full-text

Fabrication of a Metal Roller Mold with Nanoimprinted Pattern Using Thermal Nanoimprint Lithography

Science of Advanced Materials ◽

10.1166/sam.2020.3641 ◽

2020 ◽

Vol 12 (4) ◽

pp. 481-485 ◽

Cited By ~ 1

Author(s):

Soongeun Kwon ◽

Young-Jin Kim ◽

Hyungjun Lim ◽

Jaegu Kim ◽

Kee-Bong Choi ◽

...

Keyword(s):

Methyl Methacrylate ◽

Nanoimprint Lithography ◽

Laser Cutting ◽

Pmma Film ◽

Line Pattern ◽

Large Area ◽

Feature Size ◽

Electroforming Process ◽

Roller Body ◽

Line Patterns

In this work, fabrication of a metal roller mold with nanoimprinted pattern was demonstrated. To get metal nanopattern on a metal roller mold, thermal nanoimprint lithography (TNIL) and subsequent electroforming process were conducted. A poly(methyl methacrylate) (PMMA) nanopattern was fabricated by TNIL process using a polydimethylsiloxane (PDMS) soft stamp on a bare PMMA film. An optimal experimental condition of TNIL process was investigated for large area, uniform PMMA nanopatterning. As a result, large area PMMA line patterns with 200 nm linewidth were fabricated by large-area TNIL process. Electroforming process on the PMMA nanopatterned film resulted in nickel (Ni) nanopattern with a linewidth of 200 nm from the PMMA line pattern. A large area (360 mm by 730 mm in width and length) Ni stamp for a roller mold was fabricated by laser cutting and tiling process of the multiple electroformed Ni stamps. We successfully fabricated a Ni roller mold with feature size of 200 nm in linewidth by attaching the large area Ni stamp to the surface of a roller body.

Download Full-text

Replication of rose-petal surface structure using UV-nanoimprint lithography

Materials Letters ◽

10.1016/j.matlet.2014.01.037 ◽

2014 ◽

Vol 121 ◽

pp. 170-173 ◽

Cited By ~ 33

Author(s):

Soyoung Choo ◽

Hak-Jong Choi ◽

Heon Lee

Keyword(s):

Surface Structure ◽

Nanoimprint Lithography ◽

Rose Petal

Download Full-text

Surface replication with one-nanometer.level smoothness by a nickel electroforming process

International Journal of Electrical Machining ◽

10.2526/ijem.16.21 ◽

2011 ◽

Vol 16 (0) ◽

pp. 21-25 ◽

Cited By ~ 3

Author(s):

Hidekazu Mimura ◽

Satoshi Matsuyama ◽

Yasuhisa Sano ◽

Kazuto Yamauchi

Keyword(s):

Electroforming Process ◽

Nickel Electroforming

Download Full-text

Numerical simulation of nickel electroforming process influenced by flow field

10th IEEE International Conference on Nano/Micro Engineered and Molecular Systems ◽

10.1109/nems.2015.7147478 ◽

2015 ◽

Cited By ~ 1

Author(s):

Hao Sun ◽

Xiang Wang

Keyword(s):

Numerical Simulation ◽

Flow Field ◽

Electroforming Process ◽

Nickel Electroforming

Download Full-text

Effect of the Thickness Uniformity in Micro-Electroforming Process by Dividing Conductive Zone on Cathode

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.60-61.202 ◽

2009 ◽

Vol 60-61 ◽

pp. 202-206

Author(s):

Li Qun Du ◽

Li Chuan Yu ◽

Lei Song ◽

Chong Liu

Keyword(s):

Theoretical Analysis ◽

Current Density ◽

Thickness Ratio ◽

Experimental Results ◽

Thickness Uniformity ◽

Conductive Zone ◽

Electroforming Process ◽

Nickel Electroforming

In this paper, an effective method is presented to improve thickness uniformity in nickel electroforming process. In most electroforming processes, thickness ratio of edge to center is 2.5~4 and the shape of the electroforming zone is naturally a concave. Dividing conductive zone of electroforming structure to redistribute current density was applied to improve electroforming uniformity. Theoretical analysis and experimental results verify that a proper dividing method can improve the electroforming uniformity effectively. In the experiment, the thickness ratio of edge to center decreases from 2.91 to 1.88.

Download Full-text