Mehmet Kanık

1. Flexible, Adaptive, Self Assamble and Responsive Materials Selected Topics in Material Science and Nanotechnology Mehmet Kanık http://bg.bilkent.edu.tr

2. Flexible, Adaptive, Self Assamble and Responsive Materials Flexible electronics and reconstrucable smart materials became very hot topic in recent years and it has diverse applications in many areas such as switching adhesion properties, switching from hydrofulic to hyrofobic, switching from sticking to non-sticking, switching from transperancy to opac appearance, regulation of ion transport, wireless power-transmission, artificial skin and artificial muscle, LED on flexible surfaces and vice versa. In this study I will make a presentation about recent developments and emerging applications in flexible and smart materials. Therefore, I will review a few manuscripts to support my study. Abstracts of the manuscripts given below:

3. Flexible, Adaptive, Self Assamble and Responsive Materials

4. Flexible, Adaptive, Self Assamble and Responsive Materials • The electronics fields face serious problems associated with electric power; these include the development of ecologically friendly power-generation systems and ultralow-powerconsuming circuits. Moreover, there is a demand for developing new power-transmission methods in the imminent era of ambient electronics, in which a multitude of electronic devices such as sensor networks will be used in our daily life to enhance security, safety and convenience. We constructed a sheet-type wireless power-transmission system by using state-of-the-art printing technologies using advanced electronic functional inks. This became possible owing to recent progress in organic semiconductor technologies; the diversity of chemical syntheses and processes on organic materials has led to a new class of organic semiconductors, dielectric layers and metals with excellent electronic functionalities1–5. The new system directly drives electronic devices by transmitting power of the order of tens of watts without connectors, thereby providing an easy to use and reliable power source. As all of the components are manufactured on plastic films, it is easy to place the wireless power-transmission sheet over desks, floors, walls and any other location imaginable.

5. Flexible, Adaptive, Self Assamble and Responsive Materials • Stiff thin fi lms on soft substrates are both ancient and commonplace in nature; for instance, animal skin comprises a stiff epidermis attached to a soft dermis. Although more recent and rare, artifi cial skins are increasingly used in a broad range of applications, including flexible electronics1, tunable diff raction gratings2,3, force spectroscopy in cells4, modern metrology methods5, and other devices6–8. Here we show that model elastomeric artifi cial skins wrinkle in a hierarchical pattern consisting of self-similar buckles extending over fi ve orders of magnitude in length scale, ranging from a few nanometres to a few millimetres. We provide a mechanism for the formation of this hierarchical wrinkling pattern, and quantify our experimental findings with both computations and a simple scaling theory. Th is allows us to harness the substrates for applications. In particular, we show how to use the multigeneration-wrinkled substrate for separating particles based on their size, while simultaneously forming linear chains of monodisperse particles.

6. Flexible, Adaptive, Self Assamble and Responsive Materials

7. Flexible, Adaptive, Self Assamble and Responsive Materials • An electrically driven muscle-like actuator has been constructed from a series of layers of cross-linked polyacrylicacid and polyacrylamide hydrogels. In air, a uniform block of gel will bend in response to an applied field or will expel water and contract. The gel stack changes shape as water is driven from one material to the other. Compared to previous systems, this has the advantage of providing a linear motion, rather than bending, while retaining the water within the actuator.

8. Flexible, Adaptive, Self Assamble and Responsive Materials • The idea of building motors or engines at nanometer dimensions that eventually could themselves manipulate structures of comparable size has grown along with the major breakthroughs in nanotechnology over the last 20 years. This mainly concerns manipulating nanometer-sized objects such as adsorbed macromolecules or nanometer-sized colloids directly using scanning force microscopy (SFM) techniques that first helped to give a closer look at the nanometer-scale world. Such simple mechanical methods still represent the most fruitful approaches for manipulation on the nanometer scale.

9. Flexible, Adaptive, Self Assamble and Responsive Materials I will also use helpful other manuscripts related to those articles if needed. The basic concepts of my presentation is giving a basic idea about application of flexible electronic and smart materials which hopefully helpful for my futher researchs. I assumed to give a presentation about flexible, responsive and adaptive materials because nowadays it is very hot a topic in nanotechnology. If you also think that subject proper for Selected Topics in Materials Science and Nanotechnology. final paper concenps, I would like to give a presentation about the subjects that I mentioned above.