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Volumn 16, Issue 25, 2000, Pages 9944-9946

Fabrication and application of hydrogel stampers for physisorptive microcontact printing

Author keywords

[No Author keywords available]

Indexed keywords

ATOMIC FORCE MICROSCOPY; CARBOXYLIC ACIDS; CROSSLINKING; HYDROPHOBICITY; INK; MONOLAYERS; PRINTING PROPERTIES; SILICON WAFERS; SILICONES; X RAY PHOTOELECTRON SPECTROSCOPY;

EID: 0034506315     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la001053x     Document Type: Article
Times cited : (50)

References (23)
  • 8
    • 0343023202 scopus 로고    scopus 로고
    • note
    • 9 allowing improved control of fragmentation without sacrificing gel porosity and hydration. The related hydroxyl-based cross-linker, 1,1,1-tris(hydroxymethyl)-propane trimethacrylate (i.e., trimethylolpropane trimethacrylate, TPT), was also found to be compatible with AMG and strong, durable gels were formed using AMG-EG-TPT (95:2.5:2.5). However, the swelling behavior of these gels was similar to that of gels containing only AMG and EG and offered no particular advantage compared to the simpler formulation. It has not been determined whether the improved performance of the hydrogel is specifically related to the EG content.
  • 11
    • 0343458886 scopus 로고    scopus 로고
    • note
    • 3 followed by deionized water to swell the hydrogel. The capillary was then mounted in a micropositioner and contacted with the CMPTS SAM to prepare samples for XPS and AFM evaluation. Capillary microstamps not immediately used were permitted to dry at 25 °C and were stored at 4 °C until required.
  • 14
    • 0343458884 scopus 로고    scopus 로고
    • note
    • Atomic force microscopy (AFM) images were collected in tapping mode under ambient atmosphere at room temperature (∼23 °C) using a Nanoscope III AFM (Digital Instruments) equipped with microfabricated silicon nitride cantilevers as described in detail elsewhere (ref 15). Polished Si wafers were used as base substrates because of their low roughness (root mean square (rms) < 0.1 nm over a 1 μm × 1 μm area). Application of the CMPTS SAM (refs 7 and 13) increased rms to ∼0.36 nm with a peak height variation of ∼0.6 nm, consistent with molecular dimensions expected for the SAM.
  • 19
    • 0343894567 scopus 로고    scopus 로고
    • note
    • n≈3256) having 16 surface primary amine groups. The aqueous solution was prepared by evaporating a weighed amount of the 20 wt % SG2 solution in methanol (Aldrich) to dryness under vacuum, followed by addition of the calculated amount of deaerated water and 2 M HCl (aq) to the dried material to provide the required pH 9.94 solution.
  • 21
    • 0342588956 scopus 로고    scopus 로고
    • note
    • Line width measurements at 15 equally spaced points along each feature in Figure 3 were recorded and averaged to obtain printed line widths. The standard deviation (σ) of the measurements, reported as a percentage of the average printed line width (W), was used to measure line edge acuity (i.e., 100×σ/W)(ref22). Calculated edge acuities for nominal 10.0-μm-wide lines with W = 10.0 μm and σ = 1.1 μm and nominal 40.0-μm-wide lines with W = 39.9 μm and σ = 1.0 μm were 11.4% and 2.6%. respectively, using this method.
  • 23
    • 0343894566 scopus 로고    scopus 로고
    • Work in progress
    • Schull, T. L. Work in progress.
    • Schull, T.L.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.