TY - JOUR
T1 - Fabrication and characterization of microscale sandwich beams
AU - Arias, Francisco
AU - Kenis, Paul J.A.
AU - Xu, Bing
AU - Deng, Tao
AU - Schueller, Olivier J.A.
AU - Whitesides, George M.
AU - Sugimura, Yuki
AU - Evans, Anthony G.
N1 - Funding Information:
This work was supported in part by DARPA [Micro-electromechanic System (MEMS) program], NSF Grant ECS-9729405, and by ARO-MURI Grant DAAH04-95-1-0102. MRSEC-shared facilities supported by the NSF under Grant DMR-9809363 were used. P.J.A.K. acknowledges the Netherlands Organization for Scientific Research (NWO) for a postdoctoral fellowship. F.A. and B.X. thank the NIH for postdoctoral support.
PY - 2001/2
Y1 - 2001/2
N2 - Microscale sandwich beams with cell diameters and wall widths down to 150 and 15 μm, respectively, and having both metallic and polymer/metal cores were produced through fabrication methods that combined photolithography and electrodeposition. Various core structures were used, including some with negative Poisson's ratio. The bending response was investigated and compared with beam-theory predictions. Most of the cores evaluated had sufficient shear stiffness that the bending compliance was relatively high and dominated by the face sheets. Two of the core configurations were "soft" and exhibited behavior governed by core shear. The relative dimensions of the cores evaluated in this study were far from those that minimize the weight, because of fabrication constraints. The development of an ability to make high-aspect ratio cores is an essential next step toward producing structurally efficient, lightweight microscale beams and panels.
AB - Microscale sandwich beams with cell diameters and wall widths down to 150 and 15 μm, respectively, and having both metallic and polymer/metal cores were produced through fabrication methods that combined photolithography and electrodeposition. Various core structures were used, including some with negative Poisson's ratio. The bending response was investigated and compared with beam-theory predictions. Most of the cores evaluated had sufficient shear stiffness that the bending compliance was relatively high and dominated by the face sheets. Two of the core configurations were "soft" and exhibited behavior governed by core shear. The relative dimensions of the cores evaluated in this study were far from those that minimize the weight, because of fabrication constraints. The development of an ability to make high-aspect ratio cores is an essential next step toward producing structurally efficient, lightweight microscale beams and panels.
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U2 - 10.1557/JMR.2001.0086
DO - 10.1557/JMR.2001.0086
M3 - Article
AN - SCOPUS:0035262062
SN - 0884-2914
VL - 16
SP - 597
EP - 605
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 2
ER -