Charalabos C. Doumanidis

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his article addresses thermal feedback control of T distributed-parameter, dynamic nonlinear heat transfer phenomena involved in rapid prototyping processes. These mechanisms are captured in a numerical simulation of the thermal field generated during such operations. For the design of a multivariable controller, a linearized state-space model of lumped(More)
Nanofiber manufacturing is one of the key advancements in nanotechnology today. Over the past few years, there has been a tremendous growth of research activities to explore electrospinning for nanofiber formation from a rich variety of materials. This quite simple and cost effective process operates on the principle that the solution is extracted under the(More)
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. ABSTRACT Polymeric composites have gone through a level of maturity beyond the laboratory stage with the development of the Boeing 787, the structure of which contains more than 50% composites. Nonetheless, a basic understanding of the(More)
  • Harshawardhan Jogdand, Gokce Gulsoy, +5 authors Peter Wong
  • 2008
Nanoheater systems based on the exothermic reaction between aluminum and nickel were developed. Multilayered and powder-based heterostructures were fabricated and characterized, before and after ignition experiments, for their geometries and structures as well for the ignition and exothermic transformation kinetics. A novel ultrasonic powder consolidation(More)
Selective laser sintering (SLS) is an additive rapid manufacturing technique where a high-power laser is used to fuse microand nano-particles into a specified three-dimensional geometry. The goal of this work was to develop an analytical model for the SLS manufacturing process in order to control the geometrical characteristics of the sintered areas when(More)
γ-Al(2)O(3) is a well known catalyst support. The addition of Ce to γ-Al(2)O(3) is known to beneficially retard the phase transformation of γ-Al(2)O(3) to α-Al(2)O(3) and stabilize the γ-pore structure. In this work, Ce-doped γ-Al(2)O(3) nanowires have been prepared by a novel method employing an anodic aluminium oxide (AAO) template in a 0.01 M cerium(More)
Photoresists are polymers sensitive to light, usually in the ultraviolet (UV) range of the electromagnetic radiation spectrum. They are classified into positive and negative. In positive types, the exposed to light region of the photoresist becomes solvable to a developer, while the unexposed one remains unsolvable. In negative types the opposite happens.(More)