Previous studies using gram-positive and -negative bacteria demonstrated that hydrolysis of silicon nitride (Si3N4) in aqueous suspensions elutes nitrogen produces gaseous ammonia while buffering pH. According to immunochemistry assays, fluorescence imaging, situ Raman spectroscopy, we demonstrate here the antipathogenic surface chemistry Si3N4 can be extended polymethylmethacrylate (PMMA) by c...

Three decades of research in the last century developed silicon nitride (Si3N4) as one strongest and toughest ceramic material for structural applications; but this century, we newly discovered its gifted surface biochemistry. In an aqueous environment, Si3N4 undergoes hydrolysis with slow continuous elution both nitrogen. A unique environment is created, which greatly enhances healing soft oss...

Magnetically soft/hard exchange-coupled Ni80Fe20 /Si3N4 /Sm40Fe60 and Ni80Fe20 /mixture/ Sm40Fe60 layered structures with induced in-plane uniaxial anisotropy were deposited by sputtering on Si ~100! substrates. The interfacial exchange coupling strength between the soft and hard layers was tailored by inserting a thin nonmagnetic insulating Si3N4 layer or by varying interfacial mixture of NiFe...

Two compositions of ZrB2-based ceramic composites containing Si3N4, Al2O3 and Y2O3 have been hot-pressed at different temperatures between 1673 and 1773 K for 60 min in vacuum. The densification behavior of the composites was examined during the sintering process. The microstructures of the composites were characterized by scanning electron microscopy, and the crystalline phases were identified...

In this paper, a zinc oxide (ZnO) nanotube, fabricated by the hydrothermal growth method on triple-junction (T-J) solar cell devices to enhance efficiency, is investigated. Compared to those of bare T-J solar cells (without antireflection (AR) coating) and solar cells with Si3N4 AR coatings, the experimental results show that the T-J solar cells, which use a ZnO nanotube as an AR coating, have ...

Related Articles Benefits of plasma treatments on critical dimension control and line width roughness transfer during gate patterning J. Vac. Sci. Technol. B 31, 012205 (2013) The Si3N4/TiN Interface: 5. TiN/Si3N4 Grown and Analyzed In situ using Angle-resolved X-ray Photoelectron Spectroscopy Surf. Sci. Spectra 19, 72 (2012) Negative electron-beam resist hard mask ion beam etching process for ...

For integrated passive device (IPD) applications, we have successfully developed and characterized metalinsulator-metal (MIM) capacitors with 2000 Å plasma-enhanced chemical vapor deposition (PECVD) silicon nitride which are deposited with the SiH4/NH3 gas mixing rate, working pressure, and RF power of PECVD at 250oC. Five PECVD process parameters are designed to lower the refractive index and ...

The impact of Si3N4 content on the hardness and microstructural developments ZrB2-SiC material has been investigated thoroughly in present investigation. Having prepared raw materials a jar mill, samples containing various amounts were hot-pressed at 1850 °C. Furthermore, XRD, FESEM, HRTEM utilized to evaluate microstructure samples. formation in-situ h-BN was proved by mentioned methods. Also,...

A micromechanical technique for measuring solution pH using modi®ed silicon (SiO2) and silicon nitride (Si3N4) microcantilevers is described. As the modi®ed surface of the cantilever accumulates charge proportional to the pH of the surrounding liquid, the cantilever undergoes bending due to the differential surface stress. Results are presented for chemically modi®ed (4-aminobutyltriethoxysilan...