Analysis and characterization of earthen architecture as a structural material: The corbelled course domes in Syria

2012 ◽  
pp. 461-466
Keyword(s):  
Structural Material ◽  
Earthen Architecture

scholarly journals Compositional characterization of Etruscan earthen architecture and ceramic production

Archaeometry ◽  
2020 ◽  
Vol 62 (6) ◽  
pp. 1130-1144
Author(s):  
L. Ceccarelli ◽  
C. Moletti ◽  
M. Bellotto ◽  
G. Dotelli ◽  
S. Stoddart
Keyword(s):  
Ceramic Production ◽  
Earthen Architecture ◽  
Compositional Characterization

Development of a Silicon Carbide Micro Four-Point Probe

2004 ◽  
Author(s):  
Arnab Choudhury ◽  
Peter J. Hesketh
Keyword(s):  
Silicon Carbide ◽  
Structural Material ◽  
Amorphous Silicon ◽  
Process Development ◽  
Film Resistance ◽  
Amorphous Silicon Carbide ◽  
Van Der Pauw ◽  
Square Array

The process development and fabrication of a cantilever-based micro four-point probe (MFPP) is presented. This device will allow for characterization of film resistance with micrometer-scaled resolution. The proble is designed for deployment on a commercial AFM. The cantilevers are made of amorphous silicon carbide (a-SiC) and the probe body using SU8. The probe consists of two sets of cantilevers, with integrated tips, on parallel planes 8.68 μm apart. This allows the probe to contact the surface in a square array and perform a van der Pauw type measurement. Studies to characterize, pattern and dope the a-SiC have been performed to utilize silicon carbide as both the cantilever structural material as well the conductive element in the sensor. The MFPP has been fabricated and some preliminary tests have been performed.

Microstructural and mechanical characterization of W/SiC bonding for structural material in fusion

2011 ◽  
Vol 417 (1-3) ◽  
pp. 387-390 ◽  
Author(s):  
H. Kishimoto ◽  
T. Shibayama ◽  
K. Shimoda ◽  
T. Kobayashi ◽  
A. Kohyama
Keyword(s):  
Structural Material ◽  
Mechanical Characterization

scholarly journals Ultra-lightweight living structural material for enhanced stiffness and environmental sensing

2021 ◽  
Author(s):  
Heechul Park ◽  
Alan F. Schwartzman ◽  
Tzu-Chieh Tang ◽  
Lei Wang ◽  
Timothy K Lu
Keyword(s):  
Escherichia Coli ◽  
Structural Material ◽  
High Performance ◽  
Structural Materials ◽  
Low Density ◽  
Dense Network ◽  
E Coli ◽  
Real World Applications ◽  
Environmental Toxin

Natural materials such as bone, wood, and bamboo can inspire the fabrication of stiff, lightweight structural materials. Biofilms are one of the most dominant forms of life in nature. However, little is known about their physical properties as a structural material. Here we report an Escherichia coli biofilm having a Young′s modulus close to 10 GPa with ultra-low density, indicating a high-performance structural material. The mechanical and structural characterization of the biofilm and its components illuminates its adaptable bottom-up design, consisting of lightweight microscale cells covered by a dense network of amyloid nanofibrils on the surface. We engineered E. coli such that 1) carbon nanotubes assembled on the biofilm, enhancing its stiffness to over 30 GPa, or that 2) the biofilm sensitively detected heavy metal as an example of an environmental toxin. These demonstrations offer new opportunities for developing responsive living structural materials to serve many real-world applications.

scholarly journals Preparation and Characterization of Continuous Fe-Containing Silicon Carbide Radar Absorbing Fibers from Precursor-Based Processing

2012 ◽  
Vol 6 (1) ◽  
pp. 34-38
Author(s):  
Zhiyan Chen ◽  
Jun Wang ◽  
Xiaodong Li ◽  
Hao Wang
Keyword(s):  
Silicon Carbide ◽  
Structural Material ◽  
Epoxy Resin ◽  
Raw Materials ◽  
Nitrogen Atmosphere ◽  
Ceramic Fibers ◽  
Heat Treated ◽  
Melt Spun ◽  
Amorphous Sic

A new polymer polyferrocarbosilane (PFCS) was synthesized using polydimethylsilane and ferrocene as the raw materials. The polymer was then melt-spun into continuous PFCS fibers, cured in air and heat-treated in a nitrogen atmosphere up to 1300􀀁, a kind of Fe-containing SiC fibers were finally obtained. The SiC(Fe) ceramic fibers were combined with epoxy resin and a structural material was prepared showing excellent radar absorbing properties. HRTEM, XRD and XPS were used to characterize the SiC(Fe) fibers. The results show that the fibers are composed of β-SiC, amorphous SiCxO4-x, free carbon and small amount of Fe3Si-like microcrystals. A carbon-enriched layer of about 120nm was formed on the surface of the fibers.

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