7,503 research outputs found
History Always a Science or Sometimes a Science of Propaganda? An Austrian Case Study
Paper by R. John Rat
Dynamic and Static Transmission Electron Microscopy Studies on Structural Evaluation of Au nano islands on Si (100) Surface
Transmission electron microscopy (TEM) study on morphological changes in gold
nanostructures deposited on Si (100) upon annealing under different vacuum
conditions has been reported. Au thin films of thickness ~2.0 nm were deposited
under high vacuum condition (with the native oxide at the interface of Au and
Si) using thermal evaporation. In-situ, high temperature (from room temperature
(RT) to 850\degreeC) real time TEM measurements showed the evaluation of gold
nanoparticles into rectangular/square shaped gold silicide structures. This has
been attributed to selective thermal decomposition of native oxide layer.
Ex-situ annealing in low vacuum (10-2 mbar) at 850\degreeC showed no growth of
nano-gold silicide structures. Under low vacuum annealing conditions, the
creation of oxide could be dominating compared to the decomposition of oxide
layers resulting in the formation of barrier layer between Au and Si.Comment: 15 pages, 4 figure
Necessary and sufficient conditions for the nonoscillation of a first order neutral equation with several delays
Growth of Oriented Au Nanostructures: Role of Oxide at the Interface
We report on the formation of oriented gold nano structures on Si(100)
substrate by annealing procedures in low vacuum (\approx10-2 mbar) and at high
temperature (\approx 975^{\circ} C). Various thicknesses of gold films have
been deposited with SiOx (using high vacuum thermal evaporation) and without
SiOx (using molecular beam epitaxy) at the interface on Si(100). Electron
microscopy measurements were performed to determine the morphology, orientation
of the structures and the nature of oxide layer. Interfacial oxide layer, low
vacuum and high temperature annealing conditions are found to be necessary to
grow oriented gold structures. These gold structures can be transferred by
simple scratching method.Comment: 13 pages, 3 figures, Accepted in J. Appl. Phy
Scrapworthy Lives: A Cognitive Sociological Analysis of a Modern Narrative Form
Over the past 20 years, scrapbooking has become immensely popular in America. This dissertation is the study of scrapworthy lives, that is, how lives become structured by scrapbooking and how people show others that their own life and the lives of their loves ones are value—or scrapworthy. I conducted in-depth interviews with 38 scrapbookers, 11 scrapbook industry workers, and 10 family and friends of scrapbookers. I also used photo-elicitation interviewing techniques with both the scrapbookers and the family members and friends of 10 scrapbookers to examine a selection of scrapbook pages the respondents had completed. I used grounded theory methods to analyze my data, providing a more thorough understanding of scrapbooking. Scrapbooks are a site where people socially construct a narrative of their life. Through scrapbooking, scrapbookers do gender, family, race, ethnicity, and religion. Stratification within the larger society can be seen within the scrapbooking thought community. Moreover, through scrapbooking, people can demonstrate their membership in other thought communities (e.g., motherhood). Though scrapbookers are able to demonstrate their gender, family status, race, ethnicity, and religion through scrapbooking, the hobby is done primarily for the scrapbookers and not for others. Scrapbooking is a leisure activity, though some may consider it as a form of work. Scrapbookers are a thought community in their own right and an excellent site to explore Zerubavel’s (1997) six cognitive acts (i.e., perceiving, classifying, reckoning time, attending, assigning meaning, and remembering). In particular, scrapbookers come to classify nearly everything (including people, things, time, and space) in the world around them as either scrapworthy or not. Scrapbooks are a modern narrative form, though versions of scrapbooks have been around for centuries. Scrapbooks are memorials about everyday life. The content of scrapbooks is what is left out of the typical history book but is considered just as memorable by scrapbookers. Scrapbookers are storytellers. These stories could just as easily be passed down orally or recorded on blogs and some scrapbooks combine elements of oral histories and blogs. Ultimately, scrapbooks are memorials about the scrapbooker
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