Femtosecond-laser processing of nitrobiphenylthiol self-assembled monolayers
Femtosecond-laser processing of nitrobiphenylthiol self-assembled monolayers
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硝基联苯硫醇自组装单层的飞秒激光加工
DOI:
10.1016/j.apsusc.2013.01.170
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发表时间:
2013
影响因子:
6.7
通讯作者:
Nils Hartmann
中科院分区:
文献类型:
--
作者:
Anja Schröter;Steffen Franzka;Jürgen Koch;Boris N. Chichkov;Andreas Ostendorf;Nils Hartmann
Single-pulse femtosecond laser patterning of nitrobiphenylthiol monolayers on Au-coated Si substrates at λ=800nm, τ<30fs and ambient conditions has been investigated. After laser processing wet etching experiments are performed. Laser irradiation reduces the chemical resistance of the coating. In particular, the monolayer acts as a positive-tone resist. Burr-free pattern transfer is feasible at laser pulse fluences between 1 and 2.7J/cm2. Minimum structure sizes at a 1/e laser spot diameter of about 1μm are close to 300nm, i.e. sub-wavelength processing is demonstrated. Noteworthy, however, no indications for negative-tone resist properties of processed monolayers are evident, that is, cross-linking of the biphenyl moieties, if at all, is marginal. Also, complementary labeling experiments provide no evidence for chemical transformation of the nitro end groups into amine functionalities. Perspectives of resonant fs-laser processing in exploiting the particular prospects of nitrobiphenylthiol monolayers as negative-tone resists and chemically patternable platforms are discussed.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Mareike Mathieu;S. Franzka;J. Koch;B. Chichkov;N. Hartmann
通讯作者:
N. Hartmann
DOI:
--
发表时间:
2007
期刊:
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DOI:
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2005
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影响因子:
4
作者:
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通讯作者:
Goelzhaeuser, A.
影响因子:
2.9
作者:
Benjamin Klingebiel;A. Schröter;S. Franzka;N. Hartmann
通讯作者:
N. Hartmann