Results 21 to 30 of about 42,138 (198)
Applied Sciences, 2019 The broad applications of sapphire substrates in many fields warrants an urgent demand for a highly efficient and high precision polishing method for the sapphire substrates.
Tianchen Zhao +5 more
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Adhesive-Free Bonding of Monolithic Sapphire for Pressure Sensing in Extreme Environments
Sensors, 2018 This paper presents a monolithic sapphire pressure sensor that is constructed from two commercially available sapphire wafers through a combination of reactive-ion etching and wafer bonding.
Jihaeng Yi
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Study on the processing characteristics of sapphire wafer polished with different properties plates
AIP Advances, 2022 To realize the processing demands of the sapphire wafer surface with scratch-free and nano-scale roughness by mechanical polishing, a novel flexible polishing plate was developed by using soft unsaturated resin.
Chen Lin, Yongchao Xu, Qianting Wang
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AIP Advances, 2015 In Part I, we have shown that the addition of Si into sapphire by ion implantationmakes the sapphire substrate elastically softer than for the undoped sapphire.
Sung Bo Lee +2 more
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Sapphire Photonic Crystal Waveguides with Integrated Bragg Grating Structure
Photonics, 2022 This contribution demonstrates photonic crystal waveguides generated within bulk planar sapphire substrates. A femtosecond laser is used to modify the refractive index in a hexagonal pattern around the pristine waveguide core.
Stefan Kefer +4 more
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Gallium-diffused waveguides in sapphire [PDF]
Optics Letters, 2001 The fabrication and characterization of gallium-diffused planar waveguides in sapphire are reported. Waveguides were fabricated by diffusion of 60-200-nm-thick films of gallium oxide into c -cut sapphire at 1600 degrees C for times ranging from 6 to 16 h. Near-field intensity profiles of the guided modes were measured at wavelengths from 488 to 850 nm,
Apostolopoulos, V. +3 more
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Effect of Abrasive Grain Concession on Micromechanical Behavior of Lapping Sapphire by FAP
Micromachines, 2022 Aiming at exploring the material removal mechanism for sapphire using diamond abrasive grains at the microscopic level, this paper modeled and analyzed the microscopic yield behavior of diamond abrasive grains in the FAP grinding process of sapphire ...
Huimin Xu +4 more
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Integrated Photonics Research, 2001 The fabrication and operation of titanium-indiffused sapphire waveguide lasers with pump power thresholds of 210mW at 514.5nm are reported. Ga-indiffused sapphire waveguides for potential integration of passive and active devices for laser control are also described.
Wilkinson, J.S. +2 more
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Origin of Difference in Photocatalytic Activity of ZnO (002) Grown on a- and c-Face Sapphire
International Journal of Photoenergy, 2014 The oriented (002) ZnO films were grown on a- and c-face sapphire by pulsed laser deposition. The X-ray diffraction analysis revealed that the oriented (002) ZnO films were epitaxially grown on the substrate successfully.
Guoqiang Li +4 more
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Crystals, 2022 Heat treatment is an important method used to improve the value of sapphires. The identification of heat-treated sapphires is a significant and challenging subject in gemology.
Yuyang Zhang, Meihua Chen
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