2019年，香港中文大学采用低折射率的聚合物作为Rib材料，实现连续域束缚态(BIC)波导，铌酸锂厚度400nm，聚合物厚度500nm，Rib宽度1.8um，实现传输损耗1.5dB/cm[8]。

2021年10月15日 · Rib-loaded waveguide technology is an efficient approach to avoid high surface and sidewall roughness and to relax the difficulty in construction of sub-wavelength structures with steep sidewalls in case of dry-etched LNOI on-chip nanowires.

2022年9月28日 · Ribs. Wing ribs are spaced along the span of the wing and give the wing its aerodynamic shape. The ribs, spar caps, and stiffeners form bays throughout the wing that support the wing skins against buckling. Any point loads introduced into the wing are done so at ribs which form hardpoints.

摘要: 铌酸锂薄膜调制器具有体积小、带宽高、半波电压低的优点，在光纤通讯和光纤传感领域具有重要应用价值，是近年来的研究热点。 本文梳理了铌酸锂薄膜调制器的波导结构、耦合结构、电极结构的研究进展，总结了LN薄膜波导的制备工艺，并深入分析了不同结构调制器的性能。 基于SOI和LNOI结构，薄膜调制器实现了 VπL <2 V∙cm，双锥形耦合方案实现了耦合损耗<0.5 dB/facet，行波电极结构实现了调制带宽>100 GHz。 铌酸锂薄膜调制器的性能在大多数方面 …

Rib-loaded waveguide technology is an efficient approach to avoid high surface and sidewall roughness and to relax the difficulty in construction of sub-wavelength structures with steep sidewalls in case of dry-etched LNOI on-chip nanowires.

Geometrical Consideration, Rib Load. In many bearing types, the end of the roller is in contact with a flange, also called a rib. This is the case for tapered roller bearings (TRB) or spherical roller bearings (SRB) having a tapered roller, as well as cylindrical roller bearings (CRB) or needle roller bearings (NRB) having to carry an axial ...

For more than 55 years, Metal Sales Manufacturing Corporation has earned a reputation as the premier provider of innovative metal building components and accessories. We’ve backed this reputation with the industry’s largest professional sales and services team.

So here are the components of load to consider: Take the pressure times the chord times the rib pitch for both the upper and lower skins, add them, and that is the distributed load the rib has to beam to the front and aft spars.

With 12” rib spacing and 36” coverage, this is our most economical pre painted panel. Used in roof ing, siding, soff it, mansard, and fascia applications. Best coverage. Most economical pre painted panel. 5’ spanning capability. Purlin bearing leg for added strength, Anti-capillary groove — no sidelap. Quick and easy installation.

2017年5月1日 · This paper provides an experimental study to confirm that bolt rib internal length has great influence on bolting effect. Pull-out tests were conducted using rebar bolt with different rib spacings of 12, 24, 36 and 48 mm representatively from steel tube and from concrete. Results show that peak load increases 25.3% for bolt with large rib spacing.