Contact free potential mapping by vibrating capacitor
The contact free vibrating capacitor method is a valuable tool for investigating the surface potentials of solid surfaces. The purpose of the present article is to summarize the theory and capabilities of the vibrating capacitor method, especially scanning vibrating capacitor pictures in the electronics. After a brief review some results will be discussed, such as a contact potential map taken from a printed circuit board, a surface potential map from a biased ceramic thick film circuit and some results from silicon solid state devices and solar cells. Potential maps contain a lot of information concerning the surface conditions, included the inhomogeneities of the technology, bias and other additional excitation. These potential maps may help in the development, quality control and defect analysis
Determination of SiO2–Si interface trap level density (Dit) by vibrating capacitor method
Abstract The interface trap level density, D it , is one of the most important parameters of the SiO 2 –Si layer structure. C – V methods are suitable for measuring D it . However, the importance of non-destructive, touch-free methods has recently been increasing. Contactless methods use capacitive coupling. Vibration (vibrating capacitor), temperature difference and light are used for surface excitation; interface trap level density can be determined from the change in the value of oxide surface potential (work function). The present article discusses a new method for determining SiO 2 –Si interface trap level density, D it , by the vibrating capacitor method, focussing on theory, application and evaluation of the results. Measured potential maps are presented, and the results are converted into D it distributions as examples for the application of this method.
Turkish Political Culture and Civil Society : an Unsettling Coupling?
This paper attempts to analyze Turkish politics in the post-1980 period with a special reference to the relationship among the state elites, political elites and societal actors and its impact on the constitution of civil society in Turkey. After the 1980 military intervention, the political and economic realms of Turkey witnessed a relative degree of liberalization through Uzal's neo-liberal policies. The January 24 economic decisions paved the way for economic liberalization as well as letting new economic and societal actors emerge. These new economic actors were different from the prevailing economic actors which used to enjoy having a considerable amount of opportunity spaces in the economic sphere. Together with the Uzal governments, Islamic segments started to become powerful in both political and economic realms. This paper analyses the chief traits of Turkish politics and economics and their impact upon civil society aftermath the 1980 coup in general, and the relationship and/or interaction among the state elites, political elites and societal actors in particular. The engagements of newly-emerging societal and economic actors into Turkish political scene and the challenge of these actors against the so-called 'Kemalist-Republican' elites are also illustrated in the paper. Moreover, state-Islam interaction, politics-Islam interaction as well as Kemalism-newly-emerging societal and economic actors interaction will be studied with a special emphasis to the post-1980 period. The major argument of the paper is that, in Turkey, both civil society issues and political issues reveal outcomes which are primarily shaped by the nature of the relationship between state elites and political elites in general and by Turkish political culture in particular.