Results 11 to 20 of about 1,842,183 (305)

ELECTROMAGNETIC NON-CONTACT GEARS: PRELUDE [PDF]

open access: yesQuantum Field Theory Under the Influence of External Conditions (QFEXT09), 2010
We calculate the lateral Lifshitz force between corrugated dielectric slabs of finite thickness. Taking the thickness of the plates to infinity leads us to the lateral Lifshitz force between corrugated dielectric surfaces of infinite extent. Taking the dielectric constant to infinity leads us to the conductor limit which has been evaluated earlier in ...
Parashar, Prachi   +3 more
openaire   +3 more sources

Adsorbate induced enhancement of electrostatic non-contact friction [PDF]

open access: yes, 2005
We study the non-contact friction between an atomic force microscope tip and a metal substrate in the presence of bias voltage. The friction is due to energy losses in the sample created by the electromagnetic field from the oscillating charges induced ...
A. I. Volokitin   +4 more
core   +2 more sources

Non-contact friction between nanostructures [PDF]

open access: yes, 2003
We calculate the van der Waals friction between two semi-infinite solids in normal relative motion and find a drastic difference in comparison with the parallel relative motion.
Persson, B. N. J., Volokitin, A. I.
core   +2 more sources

Non-contact infrared thermometers [PDF]

open access: yesBritish Journal of General Practice, 2014
I wrote a letter to the BMJ last year setting out the evidence for non-contact infrared thermometry in adults.1 Unlike paediatric use,2 my conclusion was that these devices are not reliable in adults, largely because vasoconstriction of the blood supply to their foreheads and perspiration leading to a dangerously high false negative rate.
openaire   +2 more sources

Non-contact ultrasonic detection of angled surface defects [PDF]

open access: yes, 2011
Non-destructive testing is an important technique, and improvements are constantly needed. Surface defects in metals are not necessarily confined to orientations normal to the sample surface; however, much of the previous work investigating the ...
Clough, A. R.   +3 more
core   +1 more source

New non-contact biometer

open access: yesActa Ophthalmologica, 2008
Abstract Purpose To evaluate and compare axial length (AL), anterior chamber depth (ACD), lens thickness (LT), and central corneal thickness (CCT) measurements assessed by optical biometry (OB), ultrasound biometry (UB), optical low coherence reflectometry pachymetry (OLCR‐P), and by a new prototype applying optical low coherence reflectometry biometry
K ROHRER   +4 more
openaire   +1 more source

БЕЗКОНТАКТНИЙ ЄМНІСНИЙ СЕНСОР СИСТЕМИ КОНТРОЛЮ ПАРАМЕТРІВ БИТТЯ ВАЛІВ ПОТУЖНИХ ЕЛЕКТРИЧНИХ МАШИН

open access: yesПраці Інституту електродинаміки Національної академії наук України, 2020
In this paper presents the results of the definition the need to use a Kelvin guard ring to reduce the impact of external fields and non-uniformity of equipotential lines to change response characteristic of the capacitive sensor with a central high ...
В.О. Березниченко   +1 more
doaj   +1 more source

Applications of Water Jet Cutting Technology in Agricultural Engineering: A Review

open access: yesApplied Sciences, 2022
Cutting is a significant part of agricultural material processing, and the cutting technology determines the quality of agricultural products. Water jet cutting technology is a non-contact and cold cutting technology suitable for cutting agricultural ...
Dandan Cui   +7 more
doaj   +1 more source

Non-contact atomic force microscope: Modeling and simulation using van der Pol averaging method [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2021
Topic and aim. One of the tools which are extremely useful and valuable for creating a topography of surfaces, measuring forces, and manipulating material with nano-meter-scale features is the Atomic force microscope (AFM).
Bahrami, Mohammad Reza
doaj   +1 more source

Development of a Novel Web Camera-Based Contact-Free Major Depressive Disorder Screening System Using Autonomic Nervous Responses Induced by a Mental Task and Its Clinical Application

open access: yesFrontiers in Physiology, 2021
BackgroundTo increase the consultation rate of potential major depressive disorder (MDD) patients, we developed a contact-type fingertip photoplethysmography-based MDD screening system.
Batbayar Unursaikhan   +11 more
doaj   +1 more source

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