Results 51 to 60 of about 4,739 (252)

Investigation and Improvement of Thermal Stability of a Chromatic Confocal Probe with a Mode-Locked Femtosecond Laser Source

open access: yesApplied Sciences, 2019
An intentional investigation on the thermal stability of a mode-locked femtosecond laser chromatic confocal probe, which is a critical issue for the probe to be applied for long-term displacement measurement or surface profile measurement requiring long ...
Ryo Sato   +4 more
doaj   +1 more source

Nanometrology and nanoanalytics: annotation in the bioanalytical and nano(biomedical)pharmaceutical context

open access: yesAnales de la Real Academia Nacional de Farmacia, 2022
This annotation addresses the concepts of nanometrology and nanoanalytics, highlighting the importance of measurements and their metrological traceability at the nanoscale.
Agustín García Asuero
semanticscholar   +1 more source

A Second Harmonic Wave Angle Sensor with a Collimated Beam of Femtosecond Laser

open access: yesApplied Sciences, 2022
An optical angle sensor based on the collimated mode-locked femtosecond laser (Fs) beam, in which the angle measurement is carried out by observing the second harmonic wave generated by irradiating the Fs beam towards MgO:LiNbO3 crystal, is proposed. The
Wijayanti Dwi Astuti   +5 more
doaj   +1 more source

Controlled side-by-side assembly of gold nanorods and dye molecules into polymer-wrapped SERRS-active clusters [PDF]

open access: yes, 2011
The controlled side-by-side assembly of gold nanorods in solution together with Raman reporter dye molecules to create small SERRS-active clusters stabilised by a surrounding polymer layer is demonstrated.
Hunt, Nathan   +2 more
core   +1 more source

Lasers for Nanometrology [PDF]

open access: yesLaser Technik Journal, 2012
AbstractOver the last few decades the interest in phenomena on nanoscale or even atomic scale has increased significantly.A prominent, but at the same time very demanding technique is atomic force microscopy (AFM). AFM can reveal surface topographies at atomic resolution or be used to measure small forces in the range of only a few piconewtons.
Anja Krischke   +3 more
openaire   +1 more source

METROLOGY IN UKRAINE

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2016
The structure of Ukrainian metrology service, tasks of everyone its unit, basic stages of development and transformation of national legislation are considered on metrology tasks and harmonization of basic concepts and organizational structure of ...
Oleksandr1 Huk   +2 more
doaj   +1 more source

A New Optical Configuration for the Surface Encoder with an Expanded Z-Directional Measuring Range

open access: yesSensors, 2022
This paper proposes a new optical configuration for a two-axis surface encoder that can measure the in-plane (X-axis) and out-of-plane (Z-axis) displacements of a positioning stage. The two-axis surface encoder is composed of a scale grating and a sensor
Yifan Hong   +4 more
doaj   +1 more source

The European nanometrology landscape

open access: yesNanotechnology, 2011
This review paper summarizes the European nanometrology landscape from a technical perspective. Dimensional and chemical nanometrology are discussed first as they underpin many of the developments in other areas of nanometrology. Applications for the measurement of thin film parameters are followed by two of the most widely relevant families of ...
Richard K, Leach   +12 more
openaire   +4 more sources

Carbon dots – Separative techniques: Tools-objective towards green analytical nanometrology focused on bioanalysis

open access: green, 2020
This review aims to focus on the most recent advances and applications of carbon dots (CDs) in the fields of bioanalytical research and clinical analysis involving separation techniques.
Fernando de Andrés, Ángel Ríos
openalex   +3 more sources

Ultraviolet Raman Spectroscopy of Single and Multi-layer Graphene

open access: yes, 2009
We investigated Raman spectra of single-layer and multi-layer graphene under ultraviolet laser excitation at the wavelength of 325 nm. It was found that while the G peak of graphene remains pronounced in UV Raman spectra, the 2D band intensity undergoes ...
Alexander A. Balandin   +7 more
core   +1 more source

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