Responsive polymer surfaces : dynamics in surface topography / edited by Danqing Liu and Dirk J. Broer.

Format:

Book

Contributor:

Liu, Danqing, editor.

Broer, Dirk J., editor.

Series:

THEi Wiley ebooks.

THEi Wiley ebooks

Language:

English

Subjects (All):

Polymers--Surfaces.

Polymers.

Surface chemistry.

Physical Description:

1 online resource (258 pages) : illustrations (some color)

Edition:

1st ed.

Place of Publication:

Weinheim, Germany : Wiley-VCH, 2017.

System Details:

Access using campus network via VPN at home (THEi Users Only).

Summary:

Adopting an integrated approach, this book covers experiments, theory, and emerging applications. In the first part surfaces are described that change from flat to either a random corrugated or to a well-structured structure, while the second part deals with those surface structures integrated in the coating surface where the structures change their shape or dimension when addressed by an external trigger. A variety of materials are addressed, including liquid crystal polymers, hydrogels, hard acrylates, and soft silicones. The whole is rounded off by a discussion of various applications, including surface controlled flows in microfluidic systems. Of interest to chemists and engineers, researchers in industry and academia, as well as those working in the paint industry and hydrodynamics.

Contents:

Cover

Title Page

Copyright

Contents

List of Contributors

Preface

Chapter 1 Light-responsive Surface: Photodeformable Cross-linked Liquid-Crystalline Polymers Based on Photochemical Phase Transition

1.1 Introduction

1.2 Photochemical Phase Transition

1.3 Photodeformation

1.3.1 Photoinduced Contraction and Expansion

1.3.2 Photoinduced Bending Movements

1.3.3 Photoinduced Twisting Movements

1.4 Effect Factors of Photodeformation

1.5 Deformation Induced by Visible and NIR Light

1.6 Soft Actuators Based on CLCPs

1.6.1 Macro-scaled Actuators

1.6.2 Micro-scaled Actuators

1.7 Summary

References

Chapter 2 Inkjet Printed Liquid Crystal Cilia

2.1 Introduction

2.2 Thermal Actuation Based on Anisotropic Thermal Expansion

2.3 Light Stimulated Deformation

2.4 Inkjet Printing Actuators: Toward Polymer Cilia

2.5 Conclusion

Acknowledgment

Chapter 3 Liquid Crystal Coatings Switched between Flat and Corrugated Surface Texture

3.1 Introduction

3.2 Liquid Crystal Networks

3.3 Thermal-Responsiveness

3.4 Photo-Responsive Liquid Crystal Networks

3.5 Photo-Induced Surface Deformation

3.6 Photo-Induced Surface Deformation Preset by Patterned Director Orientation

3.7 Mechanism of Surface Deformation

3.8 Conclusions

Chapter 4 Computational Modeling of Light-triggered Topography Changes of Azobenzene-modified Liquid Crystal Polymer Coatings

4.1 Introduction

4.2 Photo-mechanical Model

4.2.1 Light Penetration Model

4.2.2 Constitutive Equations

4.3 Results and Discussion

4.3.1 Light Penetration

4.3.2 Polydomain Coatings

4.3.3 Linearly Patterned Coatings

4.3.3.1 Effect of the In-plane Dimensions

4.3.3.2 Effect of Cholesteric Pitch Length

4.3.3.3 Effect of Transition Area

4.3.4 Fingerprint Coatings.

4.3.5 Comparison and Discussion

4.4 Conclusions and Outlook

Chapter 5 Dynamic Tribology in Liquid Crystal Coatings

5.1 Introduction

5.2 Dynamic Friction Analysis

5.2.1 Coating with a Fingerprint Texture

5.2.2 Coatings with a Polydomain Texture

5.2.3 Linear Protrusions

5.3 Static Friction Coefficients

5.4 Conclusions

Chapter 6 Actuating Hydrogel Thin Films

6.1 Introduction

6.2 Hydrogel Bilayer

6.3 Patterned Hydrogel Film

6.4 Bending of Complex Structures

6.5 Intrinsic Anisotropy

6.6 Applications of Hydrogel Actuators

6.6.1 Sensors

6.6.2 Smart Lenses

6.6.3 Imaging Devices

6.6.4 Switchable Coloration

6.6.5 Elements of Microfluidic Devices

6.6.6 Walkers and Swimmers

6.6.7 3D Microfabrication

6.6.8 Biomaterials

6.6.9 Stimuli-responsive Surfaces

6.7 Conclusions and Outlook

Chapter 7 Photoresponsive Polymer Hydrogel Coatings that Change Topography

7.1 Introduction

7.2 Photoresponsive Polymer Hydrogel Coatings

7.2.1 Light Induced Heating

7.2.2 Photochromic Dyes

7.3 Photoresponsive Mixing and Flow Control in Microfluidic Devices

7.4 Photoresponsive Wettability

7.5 Photoresponsive Cell Adhesion

7.6 Conclusions and Perspectives

Chapter 8 Electrically Responsive Fluoropolymer Surfaces and Devices

8.1 Electrically Responsive Surfaces

8.1.1 The Effect of Gravity on Electrowetting Systems

8.1.2 Ideal and Non-ideal Electrowetting Behavior

8.2 Electrowetting Materials

8.2.1 Inorganic Insulators

8.2.2 Electrowetting with Oil

8.2.3 Processing on Top of the Fluoropolymer

8.3 Historical Development and Devices

8.4 Electrofluidic Arrays

8.5 Industrialization

8.6 Challenges and Conclusions

References.

Chapter 9 Functional Polymer Surfaces via Post-polymerization Modification

9.1 Introduction

9.2 Polymer Brushes

9.2.1 Activated Ester-amine

9.2.2 Thiol-based Reactions

9.2.3 Azide-Alkyne Cycloadditions

9.3 Reactive Polymer Layers

9.3.1 Overview of Coatings

9.3.2 Physisorption

9.3.3 Layer-by-Layer Self-Assembly

9.3.4 LbL Assembly Based on Covalent-bonding

9.3.5 Electrochemical Polymerization

9.3.6 Self-Polymerization of Dopamine (PDOPA)

9.3.7 Au-S bond

9.3.8 Plasma Treatment

9.3.9 Other Methods

9.4 Concluding Remarks

Chapter 10 Haptic Perception of Material Properties

10.1 Introduction

10.2 Experimental Methods

10.2.1 Discrimination

10.2.2 Search Paradigm

10.2.3 Matching

10.2.4 Ordering and Sorting

10.3 Roughness

10.3.1 Sorting Experiment

10.3.2 Ordering Experiment

10.3.3 Two-dimensional Search

10.3.4 Three-dimensional Search

10.3.5 Hand Movements

10.3.6 Discrimination and Identification

10.3.7 Discussion

10.4 Compliance

10.4.1 Free Sorting

10.4.2 Discrimination

10.4.3 Matching

10.4.4 Two- and Three-dimensional Search

10.4.5 Hand Movements

10.4.6 Discussion

10.5 Temperature

10.5.1 Discrimination of Heat Flow

10.5.2 Discrimination of Thermal Diffusivity

10.5.3 Three-dimensional Search

10.5.4 Hand Movements

10.5.5 Discussion

Index

EULA.

Notes:

Includes bibliographical references at the end of each chapters and index.

Description based on online resource; title from PDF title page (ebrary, viewed August 12, 2017).

ISBN:

9783527690527

3527690522

9783527690503

3527690506

9783527690534

3527690530

OCLC:

995760657