1
|
Galera AC, San Miguel V, Baselga J. Magneto-Mechanical Surfaces Design. CHEM REC 2018; 18:1010-1019. [DOI: 10.1002/tcr.201700073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 02/05/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Andrés C. Galera
- Department of Materials Science and Engineering and Chemical Engineering; Universidad Carlos III de Madrid Av. Universidad, 30; 28911, Leganés Madrid Spain
| | - Verónica San Miguel
- Department of Materials Science and Engineering and Chemical Engineering; Universidad Carlos III de Madrid Av. Universidad, 30; 28911, Leganés Madrid Spain
| | - Juan Baselga
- Department of Materials Science and Engineering and Chemical Engineering; Universidad Carlos III de Madrid Av. Universidad, 30; 28911, Leganés Madrid Spain
| |
Collapse
|
2
|
Con C, Cui B. Surface Nanostructures Formed by Phase Separation of Metal Salt-Polymer Nanocomposite Film for Anti-reflection and Super-hydrophobic Applications. NANOSCALE RESEARCH LETTERS 2017; 12:628. [PMID: 29247270 PMCID: PMC5732115 DOI: 10.1186/s11671-017-2402-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 12/05/2017] [Indexed: 06/07/2023]
Abstract
This paper describes a simple and low-cost fabrication method for multi-functional nanostructures with outstanding anti-reflective and super-hydrophobic properties. Our method employed phase separation of a metal salt-polymer nanocomposite film that leads to nanoisland formation after etching away the polymer matrix, and the metal salt island can then be utilized as a hard mask for dry etching the substrate or sublayer. Compared to many other methods for patterning metallic hard mask structures, such as the popular lift-off method, our approach involves only spin coating and thermal annealing, thus is more cost-efficient. Metal salts including aluminum nitrate nonahydrate (ANN) and chromium nitrate nonahydrate (CNN) can both be used, and high aspect ratio (1:30) and high-resolution (sub-50 nm) pillars etched into silicon can be achieved readily. With further control of the etching profile by adjusting the dry etching parameters, cone-like silicon structure with reflectivity in the visible region down to a remarkably low value of 2% was achieved. Lastly, by coating a hydrophobic surfactant layer, the pillar array demonstrated a super-hydrophobic property with an exceptionally high water contact angle of up to 165.7°.
Collapse
Affiliation(s)
- Celal Con
- Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Ave. West, Waterloo, Ontario, N2L 3G1, Canada.
| | - Bo Cui
- Waterloo Institute for Nanotechnology (WIN), University of Waterloo, 200 University Ave. West, Waterloo, Ontario, N2L 3G1, Canada
| |
Collapse
|
3
|
Lee D, Bae J, Hong S, Yang H, Kim YB. Optimized antireflective silicon nanostructure arrays using nanosphere lithography. NANOTECHNOLOGY 2016; 27:215302. [PMID: 27087196 DOI: 10.1088/0957-4484/27/21/215302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Broadband optical antireflective arrays of sub-wavelength structures were fabricated on silicon substrates using colloidal nanosphere lithography in conjunction with reactive ion etching. The morphology of the nanostructures, including the shape, base diameter and height, was precisely controlled by modifying the conventional process of nanosphere lithography. We investigated their effects on the optical characteristics based on experimentally measured reflectance performance. The Si nanostructure arrays demonstrated optical antireflection performance with an average reflectance of about 1% across the spectral range from 300 to 800 nm, i.e. near-ultraviolet to visible wavelengths. This fabrication method can be used to create a large surface area and offers a promising approach for antireflective applications.
Collapse
Affiliation(s)
- Dohaeng Lee
- Department of Mechanical Convergence Engineering, Hanyang University, 222 Wangsimni-ro Seongdong-gu, Seoul 133-791, Korea
| | | | | | | | | |
Collapse
|
4
|
Zhang G, Zou L, Xu H. Anodic alumina coating for extraction of volatile organic compounds in human exhaled breath vapor. Talanta 2015; 132:528-34. [DOI: 10.1016/j.talanta.2014.09.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 09/10/2014] [Accepted: 09/13/2014] [Indexed: 10/24/2022]
|
5
|
Fang J, Levchenko I, Han ZJ, Yick S, Ostrikov KK. Carbon nanotubes on nanoporous alumina: from surface mats to conformal pore filling. NANOSCALE RESEARCH LETTERS 2014; 9:390. [PMID: 25177216 PMCID: PMC4147107 DOI: 10.1186/1556-276x-9-390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 08/01/2014] [Indexed: 06/03/2023]
Abstract
UNLABELLED Control over nucleation and growth of multi-walled carbon nanotubes in the nanochannels of porous alumina membranes by several combinations of posttreatments, namely exposing the membrane top surface to atmospheric plasma jet and application of standard S1813 photoresist as an additional carbon precursor, is demonstrated. The nanotubes grown after plasma treatment nucleated inside the channels and did not form fibrous mats on the surface. Thus, the nanotube growth mode can be controlled by surface treatment and application of additional precursor, and complex nanotube-based structures can be produced for various applications. A plausible mechanism of nanotube nucleation and growth in the channels is proposed, based on the estimated depth of ion flux penetration into the channels. PACS 63.22.Np Layered systems; 68. Surfaces and interfaces; Thin films and nanosystems (structure and non-electronic properties); 81.07.-b Nanoscale materials and structures: fabrication and characterization.
Collapse
Affiliation(s)
- Jinghua Fang
- Plasma Nanoscience Laboratories, Manufacturing Flagship, CSIRO, P.O. Box 218, Lindfield, NSW 2070, Australia
- School of Physics, University of Melbourne, Parkville, VIC 3010, Australia
| | - Igor Levchenko
- Plasma Nanoscience Laboratories, Manufacturing Flagship, CSIRO, P.O. Box 218, Lindfield, NSW 2070, Australia
- Complex Systems, School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Zhao Jun Han
- Plasma Nanoscience Laboratories, Manufacturing Flagship, CSIRO, P.O. Box 218, Lindfield, NSW 2070, Australia
| | - Samuel Yick
- Plasma Nanoscience Laboratories, Manufacturing Flagship, CSIRO, P.O. Box 218, Lindfield, NSW 2070, Australia
- Complex Systems, School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Kostya Ken Ostrikov
- Plasma Nanoscience Laboratories, Manufacturing Flagship, CSIRO, P.O. Box 218, Lindfield, NSW 2070, Australia
- Complex Systems, School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
- Institute for Future Environments and School of Chemistry, Physics, and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| |
Collapse
|
6
|
Lee W, Park SJ. Porous Anodic Aluminum Oxide: Anodization and Templated Synthesis of Functional Nanostructures. Chem Rev 2014; 114:7487-556. [DOI: 10.1021/cr500002z] [Citation(s) in RCA: 905] [Impact Index Per Article: 90.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Woo Lee
- Korea Research Institute of Standards and Science (KRISS), Yuseong, 305-340 Daejeon, Korea
- Department
of Nano Science, University of Science and Technology (UST), Yuseong, 305-333 Daejeon, Korea
| | - Sang-Joon Park
- Korea Research Institute of Standards and Science (KRISS), Yuseong, 305-340 Daejeon, Korea
| |
Collapse
|
7
|
Ha JM, Yoo SH, Cho JH, Cho YH, Cho SO. Enhancement of antireflection property of silicon using nanostructured surface combined with a polymer deposition. NANOSCALE RESEARCH LETTERS 2014; 9:9. [PMID: 24397945 PMCID: PMC3895744 DOI: 10.1186/1556-276x-9-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 01/01/2014] [Indexed: 05/24/2023]
Abstract
Silicon (Si) nanostructures that exhibit a significantly low reflectance in ultraviolet (UV) and visible light wavelength regions are fabricated using a hydrogen etching process. The fabricated Si nanostructures have aperiodic subwavelength structures with pyramid-like morphologies. The detailed morphologies of the nanostructures can be controlled by changing the etching condition. The nanostructured Si exhibited much more reduced reflectance than a flat Si surface: an average reflectance of the nanostructured Si was approximately 6.8% in visible light region and a slight high reflectance of approximately 17% in UV region. The reflectance was further reduced in both UV and visible light region through the deposition of a poly(dimethylsiloxane) layer with a rough surface on the Si nanostructure: the reflectance can be decreased down to 2.5%. The enhancement of the antireflection properties was analyzed with a finite difference time domain simulation method.
Collapse
Affiliation(s)
- Jun Mok Ha
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon 305-701, Republic of Korea
| | - Sung Ho Yoo
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon 305-701, Republic of Korea
| | - Jong Hoi Cho
- Department of Physics and KI for the NanoCentury, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon 305-701, Republic of Korea
| | - Yong Hoon Cho
- Department of Physics and KI for the NanoCentury, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon 305-701, Republic of Korea
| | - Sung Oh Cho
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon 305-701, Republic of Korea
| |
Collapse
|