Study of novel polymer architectures on solid surfaces by variable angle spectroscopic and imaging ellipsometry

Beyerlein, Detlev; Kratzmüller, Thomas; Eichhorn, Klaus‐Jochen

doi:10.1016/s0924-2031(01)00175-8

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…So, the best spatial resolution can be in the range of 1−2 μm. Imaging ellipsometry is gaining increasing interest in particular for visualization of biomolecules and biological interaction on a substrate, e.g., an antigen−antibody interaction as a model of a biosensor or surface-grafted polypeptides …”

Section: Introductionmentioning

confidence: 99%

“…Imaging ellipsometry is gaining increasing interest in particular for visualization of biomolecules and biological interaction on a substrate, 42 e.g., an antigen-antibody interaction as a model of a biosensor 43 or surface-grafted polypeptides. 44 In this paper we describe the micropatterning of a thermoresponsive hydrogel and the characterization of its temperature-dependent swelling and collapsing behavior, analyzed by imaging ellipsometry. The experiments are carried out as proof-of-principle for the lithographic method.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Study of the Thermoresponsive Behavior of Micropatterned Hydrogel Films by Imaging Ellipsometry

et al. 2005

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A patterned hydrogel was immobilized on a polymer substrate by low-pressure argon plasma treatment using a masking technique. The polymer sample showed a thermoresponsive aggregation behavior in the region of 35-37 degrees C. The micropatterned, thermoresponsive hydrogel film has been characterized with imaging ellipsometry. The characterization was carried out on the dry film as well as on a swollen sample in water. The thermoresponsive behavior was studied in deionized water by temperature-dependent measurements in a solid-liquid cell. Through imaging ellipsometry, it was possible to distinguish the different regions of interest on a micrometer scale and to follow the swelling of the hydrogel part as a function of the temperature. It was possible to visualize the swelling as 3D profiles of Delta at various temperatures. Long-term changes of the sample could also be detected, which cannot be picked up by conventional ellipsometry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Situ Study of the Thermoresponsive Behavior of Micropatterned Hydrogel Films by Imaging Ellipsometry

et al. 2005

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“…Recently, imaging ellipsometry (IE) or ellipsometric microscopy has drawn much attention as it combines the merits of both ellipsometry and optical microscopy. [1][2][3][4][5] In IE, imaging optics and image sensors such as a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) array detector are integrated into an ellipsometer to acquire an ellipsometric image over a small area in a reasonable amount of acquisition time.…”

Section: Introductionmentioning

confidence: 99%

Development of Calibration-Free Imaging Ellipsometry Using Dual-Rotation of Polarizer and Analyzer

Cheon

Bak

et al. 2007

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Imaging ellipsometry is developed in the dual-rotation mode of a polarizer and an analyzer. In this system, the polarizer and analyzer are rotated by a stepping motor at 1:1 ratio and the offset between the azimuths of both elements is kept constant. For data reduction, a two-dimensional array detector collects multiple intensity images during rotation and waveform analysis is performed for each pixel. This system generates second and fourth harmonics in intensity waveform and {Δ, Ψ} images are deduced from the amplitudes of these harmonics without considering their phases, which leads to calibration-free imaging ellipsometry. This system works well with an offset between two elements but it becomes less susceptible to an offset-setting error with a smaller offset. Besides the ease of operation, this system is simple to construct as no complicated control mechanism is required for each component.

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“…Furthermore, imaging ellipsometry was used as method of investigation which was demonstrated to be an efficient technique in order to study multilayer systems. 42 Depending on the geometry of the used TEM grid, the corresponding surface pattern is visible by light microscopy, indicating the successful surface-initiated ATRP of NIPAAm at the irradiated areas. The comparison of the obtained film surfaces before and after the NIPAAm-ATRP confirms that the visible contrast is due to the accomplished surface polymerization (see Supporting Information, Figure SI6).…”

mentioning

confidence: 99%

“…The resulting surfaces were studied by light microscopy and scanning electron microscopy (SEM, see also Supporting Information Figure SI5). Furthermore, imaging ellipsometry was used as method of investigation which was demonstrated to be an efficient technique in order to study multilayer systems …”

mentioning

confidence: 99%

Photopatternable Films of Block Copolymers Prepared through Double-Click Reaction

et al. 2010

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Study of novel polymer architectures on solid surfaces by variable angle spectroscopic and imaging ellipsometry

Cited by 9 publications

References 7 publications

In Situ Study of the Thermoresponsive Behavior of Micropatterned Hydrogel Films by Imaging Ellipsometry

In Situ Study of the Thermoresponsive Behavior of Micropatterned Hydrogel Films by Imaging Ellipsometry

Development of Calibration-Free Imaging Ellipsometry Using Dual-Rotation of Polarizer and Analyzer

Photopatternable Films of Block Copolymers Prepared through Double-Click Reaction

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