Michal Lahav

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Current research on social networking largely covers US providers. To investigate broader trends, we examine cross-cultural differences in the usage patterns of social networking services with observation and ethnographic interviews in multiple cultures. This appears to be the first systematic investigation of social networking behavior across multiple(More)
This report presents a simple and convenient method to generate nanoscale fractures (cracks) in smooth, single-crystalline Si substrates. The cracks propagated as approximately straight lines along the {100} crystal planes with controllable length defined by a stabilizing backlayer. Close to its tip, the crack presented a vertical offset of the two planes(More)
This paper describes a photolithographic method to create sub-micron-scale patterns of cation-cross-linked poly(acrylic acid) (CCL-PAA). PAA can be cross-linked with a wide range of metal cations—including, but not limited to, Ag 3+ , and Ti 4+. Upon patterning a positive photoresist (diazonaphthoquinone-novolac resin) on a film of CCL-PAA, the exposed(More)
Composite nanostructures (approximately 200 nm wide and several micrometers long) of metal and polyaniline (PANI) in two new variations of core-shell (PANI-Au) and segmented (Au-PANI and Ni-Au-PANI) architectures were fabricated electrochemically within anodized aluminum oxide (AAO) membranes. Control over the structure of these composites (including the(More)
Web search engines emerged prior to the dominance of so cial media. What if we imagined search as integrating with social media from the ground up? So.cl is a web application that combines web browsing, search, and social networking for the purposes of sharing and learning around topics of in terest. In this paper, we present the results of a deployment(More)
This study investigated cues that permit prediction of turns during passive movement through a virtual environment. Effects on simulator sickness (SS), presence and enjoyment were examined. Subjects were exposed to complex visual motion through a cartoon-like simulated environment in a driving simulator. Forward velocity remained constant and the motion(More)
Here we show a step-wise approach for the formation of continuous shell-structures on surface-confined gold nanoparticles. The nanoparticle-cores induce order in the shell-structure, which consists of metal-organic networks. Communication between the organic and inorganic parts is reflected in their optical properties.
We report qualitative consumer field trials of a prototype digital memory device known as SenseCam. We presented SenseCam to 25 consumers in the US (N=9), Japan (N=8), and South Korea (N=8) to determine initial interest and expected use cases. This was followed by respondents using an actual prototype camera for approximately one week and reporting on their(More)
We report a work in progress: development and initial validation of the Product Interest and Engagement Scale (PIES), a short assessment instrument measuring consumer interest in technology products. PIES reflects an explicitly multidimensional, hierarchical, and extensible model of product interest. It assesses consumer product interest in terms of an(More)