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Bioscience

Biomaterials

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Displaying 501 - 525 of 3439

Hierarchical Roughness Makes Superhydrophobic States Stable

February 19, 2017
Author(s)
Michael Nosonovsky, Bharat Bhushan
Roughness enhances hydrophobicity of a solid surface leading to high contact angles with water. To achieve low contact angle hysteresis along with a high contact angle, superhydrophobic surfaces should form composite interface (CI) with air pockets in the

High Performance Tribology Systems: Design Consideration

February 19, 2017
Author(s)
Stephen M. Hsu
Since the 1980s, the pace of technology innovations has accelerated exponentially. The advent of high efficiency yet environmental friendly diesel engine technology, micro-electro-mechanical devices (MEMs), better and more durable biomaterials, and ever

How Standards Help Bring New Materials to the Market

February 19, 2017
Author(s)
Stephen W. Freiman, George D. Quinn
This paper attempts to describe the importance of standards in helping to bring new materials to the market place. Using ceramic materials as an example, the different ways that standards can be important in the materials development process are outlined

ICSD Accessibility in Support of Materials Research and Design

February 19, 2017
Author(s)
Vicky L. Karen, A J. Belsky
The materials community in both science and industry use crystallographic data models on a daily basis to visualize, explain, and predict the behavior of chemicals and materials. Access to reliable information on the structure of crystalline materials

Influence of Particle Size on DCPD Hydrolysis and Setting Properties of TTCP/DCPD Cement

February 19, 2017
Author(s)
Limin Sun, Laurence C. Chow, Shozo Takagi, Elena F. Burguera, Stanislav Frukhtbeyn
This study investigated the effects of particle size on the hydrolysis reaction of DCPD at pH 7 and 37 C and on the setting properties of a TTCP/DCPD cement. The kinetics of the hydrolysis reaction was controlled by a nucleation and growth mechanism

Instability of Adhesion Force Between Rough Surfaces

February 19, 2017
Author(s)
Michael Nosonovsky, Seung H. Yang, Huan Zhang
Adhesion force has a significant effect upon the contact of rough surfaces with nanoscale asperities. The dominant component of the adhesion force is the capillary force caused by condensed water menisci. The capillary force depends upon the meniscus shape

Interfacial Dewetting in Silicon Nitride Containing Aligned Grains

February 19, 2017
Author(s)
B Hockey, D S. Park, H D. Kim, S W. Lee
It is generally believed that liquid phase sintering of silicon nitride invariably results in a continuous intergranular phase such that individual grains are separated by a glassy interphase, typically as thin as I nm. To the contrary, results presented

Lateral Force Microscope Calibration Using a Modified AFM Cantilever

February 19, 2017
Author(s)
Mark Reitsma
A proof-of-concept study is presented for a new force transducer and associated calibration method that provides a path for quantitative friction measurements using a Lateral Force Microscope. The transducer design is an Atomic Force Microscope (AFM)

Lifetime Prediction for Silicon Nitride

February 19, 2017
Author(s)
Sheldon M. Wiederhorn
This paper reviews lifetime prediction methodologies for high-temperature structural ceramics. The methodologies consider failure from subcritical crack growth at low temperatures, 800 C to 1000 C, and creep, or creep-rupture at high temperatures. The

Material Properties of a Sintered a-SiC

February 19, 2017
Author(s)
R G. Munro
A self-consistent, single-valued representation of the major physical, mechanical, and thermal properties of a sintered Α-SiC is presented. This comprehensive set of properties is achieved by focusing on a narrowly defined material specification in which
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