Results 51 to 60 of about 226,839 (310)

Trust Model Concept for IoT Blockchain Applications as Part of the Digital Transformation of Metrology

open access: yesSensors, 2022
Trends for the digital transformation of metrology and regulation of metrology through IT have some keywords in common with the main properties of the blockchain, such as traceability, immutability, and machine-readable documents.
Kruno Miličević   +3 more
doaj   +1 more source

Metrology Challenges in 3D NAND Flash Technical Development and Manufacturing

open access: yesJournal of Microelectronic Manufacturing, 2020
3D NAND technical development and manufacturing face many challenges to scale down their devices, and metrology stands out as much more difficult at each turn. Unlike planar NAND, 3D NAND has a three-dimensional vertical structure with high-aspect ratio.
Wei Zhang   +4 more
doaj   +1 more source

A digital framework for metrological information

open access: yesMeasurement: Sensors, 2021
A digital-system structure is very important for developing Metrology for Digital Transformation (M4DT) at NMIs. A plan for the digital transformation in metrology at the National Institute of Metrology (NIM), China is proposed.
XingChuang Xiong   +4 more
doaj   +1 more source

Quantum Metrology with Cold Atoms

open access: yes, 2013
Quantum metrology is the science that aims to achieve precision measurements by making use of quantum principles. Attribute to the well-developed techniques of manipulating and detecting cold atoms, cold atomic systems provide an excellent platform for ...
Huang, Jiahao   +3 more
core   +1 more source

Metrology: where do we stumble?

open access: yesAspekti Publìčnogo Upravlìnnâ, 2019
The article presents the main milestones in the development of the science of metrology, identifies the controversial and difficult aspects of the development of this area of ​​scientific knowledge.
Ю. П. Адлер
doaj   +1 more source

Diffraction-Based Overlay Metrology With Optical Convolution Layer

open access: yesIEEE Photonics Journal, 2023
Overlay is a crucial indicator of manufacturing processing between layers. Currently, diffraction-based overlay (DBO) is widely adopted in overlay metrology.
Jinyang Li, Hung-Fei Kuo
doaj   +1 more source

A low cost scheme for high precision dual-wavelength laser metrology

open access: yes, 2013
A novel method capable of delivering relative optical path length metrology with nanometer precision is demonstrated. Unlike conventional dual-wavelength metrology which employs heterodyne detection, the method developed in this work utilizes direct ...
Ireland, Michael J.   +5 more
core   +1 more source

Review of the mathematical foundations of data fusion techniques in surface metrology [PDF]

open access: yes, 2015
The recent proliferation of engineered surfaces, including freeform and structured surfaces, is challenging current metrology techniques. Measurement using multiple sensors has been proposed to achieve enhanced benefits, mainly in terms of spatial ...
Ai C   +34 more
core   +1 more source

Investigation in optimisation of accuracy with non-contact systems by influencing variable processes [PDF]

open access: yes, 2019
The use of 3D scanning systems is becoming increasingly popular and an essential tool for manufacturers for inspection and measurement. With such systems being utilised on the manufacturing shop floor due to their portability and ease of use, it is no ...
Gashi, Bekim V.   +3 more
core   +1 more source

The GRAVITY metrology system: modeling a metrology in optical fibers

open access: yes, 2014
GRAVITY is the second generation VLT Interferometer (VLTI) instrument for high-precision narrow-angle astrometry and phase-referenced interferometric imaging.
Amorim, A.   +22 more
core   +1 more source

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