Results 11 to 20 of about 1,231,806 (179)

Pyrolyzed Photoresist as a Continuous-Tone Mask for Grayscale Lithography. [PDF]

open access: yesAdv Sci (Weinh)
True grayscale contact photolithography masks are created by pyrolysis of 3D multiphoton resist patterns. The resulting carbon masks retain micrometer‐scale patterned features while providing continuous‐tone optical transmission. This approach provides access to high‐quality grayscale lithography without requiring exotic materials or commercial mask ...
Creason TD   +9 more
europepmc   +2 more sources

The Effect of Diode Laser Irradiation on Surface Roughness of Bleached Enamel: An in Vitro Study [PDF]

open access: yesAl-Rafidain Dental Journal, 2021
Aims: To evaluate the influence of post bleaching diode laser irradiation on the surface roughness of bleached enamel. Materials and methods: Forty bovine teeth were prepared and then randomly divided into two equal groups (n=20) according to the in ...
Alaa H. Ali, Abduladheem Raouf Sulaiman
doaj   +1 more source

Acoustic Roughness Measurement of Railway Tracks: Running Surface Detection and Compensation of Lateral Movements for Optical Measurements on a Train

open access: yesSensors, 2023
Rolling noise is a significant contributor to railway noise. Wheel and rail roughness are decisive for the emitted noise level. An optical measurement method installed on a moving train is suitable for closer monitoring of the rail surface condition.
Florian Mauz   +5 more
doaj   +1 more source

Development and implementation of an optical profilometer by laser triangulation

open access: yes, 2021
Profilometers are instruments commonly used in surface metrology tasks. These instruments play a key role in the industry, such as in manufacturing and quality assurance.
Mendoza, Kevin   +2 more
core   +1 more source

Laser profilometer testing by laboratory measurements

open access: yesResearch in Agricultural Engineering, 2007
Measuring soil surface profile has many purposes in the field of agriculture and landscape management. For example, it concerns quantitative evaluation of work quality of soil cultivation implements, and related assessment of soil surface status prior ...
P. Šařec   +3 more
doaj   +1 more source

Shear strength of bonded concrete-granite joints under constant normal stress conditions [PDF]

open access: yesE3S Web of Conferences, 2019
The shear behaviour of bonded concrete-granite joints under constant normal stress conditions is experimentally investigated in this paper. Concrete was prepared following standard mix used in pre-existing dams in France and poured on granite samples ...
Briffaut Matthieu   +3 more
doaj   +1 more source

Evaluation of surface roughness after root resection: An optical profilometer study [PDF]

open access: yes, 2021
The aim of this study was to evaluate the roughness of the apical surface after apical resection performed by six different methods with an optical profilometer. Sixty human single root premolar teeth were used in this in vitro study.
Ekici, Omer   +8 more
core   +1 more source

Surface Wettability Modification of Cyclic Olefin Polymer by Direct Femtosecond Laser Irradiation

open access: yesNanomaterials, 2015
The effect of laser irradiation on surface wettability of cyclic olefin polymer (COP) was investigated. Under different laser parameters, a superhydrophilic or a superhydrophobic COP surface with a water contact angle (WCA) of almost 0° or 163 ...
Bing Wang   +3 more
doaj   +1 more source

Surface Preparation for Coating and Erosion MRR of SS 304 Using Silicon Carbide Abrasive Jet

open access: yesLubricants, 2022
The surface preparation of shiny stainless steels is a must for applying esthetic paints, effective functional plasma spray coating, laser cladding, welding, etc., applications. The current work aims for effective surface roughening and erosion MRR of SS
Deb Kumar Adak   +6 more
doaj   +1 more source

Application of Laser Profilometry to Evaluation of the Surface of the Workpiece Machined by Abrasive Waterjet Technology

open access: yesApplied Sciences, 2019
The paper is an evaluation of the surface roughness of various materials produced by water jet cutting (AWJ, abrasive water jet). A 3D laser profilometer developed at the Department of Design and Technical Systems Monitoring at our University was used in
Gerhard Mitaľ   +3 more
doaj   +1 more source

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