|
1
|
Kwon S, Choi HJ, Shim HC, Yoon Y, Ahn J, Lim H, Kim G, Choi KB, Lee J. Hierarchically Porous, Laser-Pyrolyzed Carbon Electrode from Black Photoresist for On-Chip Microsupercapacitors. NANOMATERIALS 2021; 11:nano11112828. [PMID: 34835593 PMCID: PMC8620280 DOI: 10.3390/nano11112828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/14/2021] [Accepted: 10/20/2021] [Indexed: 01/23/2023]
Abstract
We report a laser-pyrolyzed carbon (LPC) electrode prepared from a black photoresist for an on-chip microsupercapacitor (MSC). An interdigitated LPC electrode was fabricated by direct laser writing using a high-power carbon dioxide (CO2) laser to simultaneously carbonize and pattern a spin-coated black SU-8 film. Due to the high absorption of carbon blacks in black SU-8, the laser-irradiated SU-8 surface was directly exfoliated and carbonized by a fast photo-thermal reaction. Facile laser pyrolysis of black SU-8 provides a hierarchically macroporous, graphitic carbon structure with fewer defects (ID/IG = 0.19). The experimental conditions of CO2 direct laser writing were optimized to fabricate high-quality LPCs for MSC electrodes with low sheet resistance and good porosity. A typical MSC based on an LPC electrode showed a large areal capacitance of 1.26 mF cm-2 at a scan rate of 5 mV/s, outperforming most MSCs based on thermally pyrolyzed carbon. In addition, the results revealed that the high-resolution electrode pattern in the same footprint as that of the LPC-MSCs significantly affected the rate performance of the MSCs. Consequently, the proposed laser pyrolysis technique using black SU-8 provided simple and facile fabrication of porous, graphitic carbon electrodes for high-performance on-chip MSCs without high-temperature thermal pyrolysis.
Collapse
Affiliation(s)
- Soongeun Kwon
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
- Correspondence:
| | - Hak-Jong Choi
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
| | - Hyung Cheoul Shim
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
- Department of Nanomechatronics, Korea University of Science and Technology (UST), 217, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34113, Korea
| | - Yeoheung Yoon
- Korea Electric Power Research Institute, 105, Munji-Ro, Yuseong-Gu, Daejeon 34056, Korea;
| | - Junhyoung Ahn
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
| | - Hyungjun Lim
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
- Department of Nanomechatronics, Korea University of Science and Technology (UST), 217, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34113, Korea
| | - Geehong Kim
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
| | - Kee-Bong Choi
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
| | - JaeJong Lee
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Korea; (H.-J.C.); (H.C.S.); (J.A.); (H.L.); (G.K.); (K.-B.C.); (J.L.)
- Department of Nanomechatronics, Korea University of Science and Technology (UST), 217, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34113, Korea
| |
Collapse
|
|
2
|
Asif A, García‐López S, Heiskanen A, Martínez‐Serrano A, Keller SS, Pereira MP, Emnéus J. Pyrolytic Carbon Nanograss Enhances Neurogenesis and Dopaminergic Differentiation of Human Midbrain Neural Stem Cells. Adv Healthc Mater 2020; 9:e2001108. [PMID: 32902188 DOI: 10.1002/adhm.202001108] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Indexed: 12/21/2022]
Abstract
Advancements in research on the interaction of human neural stem cells (hNSCs) with nanotopographies and biomaterials are enhancing the ability to influence cell migration, proliferation, gene expression, and tailored differentiation toward desired phenotypes. Here, the fabrication of pyrolytic carbon nanograss (CNG) nanotopographies is reported and demonstrated that these can be employed as cell substrates boosting hNSCs differentiation into dopaminergic neurons (DAn), a long-time pursued goal in regenerative medicine based on cell replacement. In the near future, such structures can play a crucial role in the near future for stem-cell based cell replacement therapy (CRT) and bio-implants for Parkinson's disease (PD). The unique combination of randomly distributed nanograss topographies and biocompatible pyrolytic carbon material is optimized to provide suitable mechano-material cues for hNSCs adhesion, division, and DAn differentiation of midbrain hNSCs. The results show that in the presence of the biocoating poly-L-lysine (PLL), the CNG enhances hNSCs neurogenesis up to 2.3-fold and DAn differentiation up to 3.5-fold. Moreover, for the first time, consistent evidence is provided, that CNGs without any PLL coating are not only supporting cell survival but also lead to significantly enhanced neurogenesis and promote hNSCs to acquire dopaminergic phenotype compared to PLL coated topographies.
Collapse
Affiliation(s)
- Afia Asif
- Department of Biotechnology and Biomedicine (DTU Bioengineering) Produktionstorvet Building 423, Room 122 Kgs. Lyngby 2800 Denmark
| | - Silvia García‐López
- Department of Molecular Biology Universidad Autónoma Madrid Madrid 28049 Spain
- Department of Molecular Neuropathology Center of Molecular Biology Severo Ochoa (UAM‐CSIC) Nicolás Cabrera 1 Madrid 28049 Spain
| | - Arto Heiskanen
- Department of Biotechnology and Biomedicine (DTU Bioengineering) Produktionstorvet Building 423, Room 122 Kgs. Lyngby 2800 Denmark
| | - Alberto Martínez‐Serrano
- Department of Molecular Biology Universidad Autónoma Madrid Madrid 28049 Spain
- Department of Molecular Neuropathology Center of Molecular Biology Severo Ochoa (UAM‐CSIC) Nicolás Cabrera 1 Madrid 28049 Spain
| | - Stephan S. Keller
- National Centre for Nano Fabrication and Characterization (DTU Nanolab) Ørsteds Plads, Building 347 Kgs. Lyngby 2800 Denmark
| | - Marta P. Pereira
- Department of Molecular Biology Universidad Autónoma Madrid Madrid 28049 Spain
- Department of Molecular Neuropathology Center of Molecular Biology Severo Ochoa (UAM‐CSIC) Nicolás Cabrera 1 Madrid 28049 Spain
| | - Jenny Emnéus
- Department of Biotechnology and Biomedicine (DTU Bioengineering) Produktionstorvet Building 423, Room 122 Kgs. Lyngby 2800 Denmark
| |
Collapse
|
|
3
|
Liu F, Kolesov G, Parkinson BA. Preparation, Applications, and Digital Simulation of Carbon Interdigitated Array Electrodes. Anal Chem 2014; 86:7391-8. [DOI: 10.1021/ac5019364] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Liu
- Department
of Chemistry and Department of Physics, School of Energy Resources, University of Wyoming, Laramie Wyoming 82071, United States
| | - Grigory Kolesov
- Department
of Chemistry and Department of Physics, School of Energy Resources, University of Wyoming, Laramie Wyoming 82071, United States
| | - B. A. Parkinson
- Department
of Chemistry and Department of Physics, School of Energy Resources, University of Wyoming, Laramie Wyoming 82071, United States
| |
Collapse
|
|
4
|
Huang CC, Pelatt BD, Conley JF. Directed integration of ZnO nanobridge sensors using photolithographically patterned carbonized photoresist. NANOTECHNOLOGY 2010; 21:195307. [PMID: 20407146 DOI: 10.1088/0957-4484/21/19/195307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A method for achieving large area integration of nanowires into electrically accessible device structures remains a major challenge. We have achieved directed growth and integration of ZnO nanobridge devices using photolithographically patterned carbonized photoresist and vapor transport. This carbonized photoresist method avoids the use of metal catalysts, seed layers, and pick and place processes. Growth and electrical connection take place simultaneously for many devices. Electrical measurements on carbonized photoresist/ZnO nanobridge/carbonized photoresist structures configured as three-terminal field effect devices indicate bottom gate modulation of the conductivity of the n-type ZnO channel. Nanobridge devices were found to perform well as ultraviolet and gas sensors, and were characterized as regards ultraviolet light pulsing, oxygen concentration, and humidity. The sensitivity of the three-terminal nanobridge sensors to UV light and oxygen was enhanced by application of a negative bottom gate voltage.
Collapse
Affiliation(s)
- Chien-Chih Huang
- School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR, USA.
| | | | | |
Collapse
|