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Aguilar-Lugo C, Álvarez C, Lee YM, de la Campa JG, Lozano ÁE. Thermally Rearranged Polybenzoxazoles Containing Bulky Adamantyl Groups from Ortho-Substituted Precursor Copolyimides. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02460] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Carla Aguilar-Lugo
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
| | - Cristina Álvarez
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
| | - Young Moo Lee
- Department of Energy Engineering, Hanyang University, 04763 Seoul, Republic of Korea
| | - José G. de la Campa
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
| | - Ángel E. Lozano
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
- SMAP, UA-UVA_CSIC, Associated Research Unit to CSIC, Fac. de Ciencias, Univ. de Valladolid, Paseo Belén 7, E-47011 Valladolid, Spain
- IU CINQUIMA, Univ. de Valladolid, Paseo Belen 5, E-47011 Valladolid, Spain
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Xu X, Yang Q, Cheung KM, Zhao C, Wattanatorn N, Belling JN, Abendroth JM, Slaughter LS, Mirkin CA, Andrews AM, Weiss PS. Polymer-Pen Chemical Lift-Off Lithography. NANO LETTERS 2017; 17:3302-3311. [PMID: 28409640 DOI: 10.1021/acs.nanolett.7b01236] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We designed and fabricated large arrays of polymer pens having sub-20 nm tips to perform chemical lift-off lithography (CLL). As such, we developed a hybrid patterning strategy called polymer-pen chemical lift-off lithography (PPCLL). We demonstrated PPCLL patterning using pyramidal and v-shaped polymer-pen arrays. Associated simulations revealed a nanometer-scale quadratic relationship between contact line widths of the polymer pens and two other variables: polymer-pen base line widths and vertical compression distances. We devised a stamp support system consisting of interspersed arrays of flat-tipped polymer pens that are taller than all other sharp-tipped polymer pens. These supports partially or fully offset stamp weights thereby also serving as a leveling system. We investigated a series of v-shaped polymer pens with known height differences to control relative vertical positions of each polymer pen precisely at the sub-20 nm scale mimicking a high-precision scanning stage. In doing so, we obtained linear-array patterns of alkanethiols with sub-50 nm to sub-500 nm line widths and minimum sub-20 nm line width tunable increments. The CLL pattern line widths were in agreement with those predicted by simulations. Our results suggest that through informed design of a stamp support system and tuning of polymer-pen base widths, throughput can be increased by eliminating the need for a scanning stage system in PPCLL without sacrificing precision. To demonstrate functional microarrays patterned by PPCLL, we inserted probe DNA into PPCLL patterns and observed hybridization by complementary target sequences.
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Affiliation(s)
- Xiaobin Xu
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Qing Yang
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Kevin M Cheung
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Chuanzhen Zhao
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Natcha Wattanatorn
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Jason N Belling
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - John M Abendroth
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Liane S Slaughter
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Chad A Mirkin
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Anne M Andrews
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Paul S Weiss
- California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health, Semel Institute for Neuroscience and Human Behavior, and Hatos Center for Neuropharmacology, University of California, Los Angeles , Los Angeles, California 90095, United States
- Department of Chemistry and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
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Zhang H, Liu M, Zhou F, Liu D, Liu G, Duan G, Cai W, Li Y. Physical deposition improved SERS stability of morphology controlled periodic micro/nanostructured arrays based on colloidal templates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:844-53. [PMID: 25356821 DOI: 10.1002/smll.201402630] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Indexed: 05/19/2023]
Abstract
An effective and inexpensive method is developed to fabricate periodic arrays by sacrificial colloidal monolayer template route by chemical deposition and further physical deposition. By a colloidal template induced precursor solution dipping strategy, different periodic arrays of semi-hollow sphere array, inverse opal with monolayer pore arrays and hole arrays are obtained under different conditions. After magnetron sputtering deposition, their morphologies are changed to novel micro/nanostructured arrays of honeycomb-shaped arrays, hollow cavity arrays, and regular network arrays due to multiple direction deposition of sputtering deposition and shadow effect. After coating a gold thin layer, these periodic micro/nanostructured arrays are used as SERS active substrates and demonstrate a very stable SERS performance compared with periodic arrays achieved by direct colloidal template-induced chemical deposition. Additionally, a honeycomb-shaped array displays better SERS enhancement than that of a hollow cavity array or a regular network array. After optimization of honeycomb-shaped arrays with different periodicities, an array with periodicity of 350 nm demonstrates much stronger SERS enhancement and possesses a low detection limit of 10(-11) M R6G. Such stable SERS performance is useful for practical application in portable Raman detecting devices to detect organic molecules.
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Affiliation(s)
- Honghua Zhang
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, Anhui, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
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