pulsed excitation
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2022 ◽  
Author(s):  
Anita Devi ◽  
Sumit Yadav ◽  
Arijit De

Abstract Recent theoretical and experimental studies have shed light on how optical trapping dynamics under femtosecond pulsed excitation are fine-tuned by optical and thermal nonlinearities. Here, we present experimental results of nonlinear optical trapping of single and multiple polystyrene beads (of 1 μm diameter). We show how integration and synchronization of bright-filed video microscopy with confocal detection of backscatter provide both spatial and temporal resolution required to capture intricate details of trapping dynamics. Such spatiotemporal detection is promising to have far-reaching applications in exploring controlled optical trapping and manipulations harnessed by optical and thermal nonlinearities.



Author(s):  
Hacene Manaa ◽  
Devrim Attila ◽  
Ayşe Gül Gürek ◽  
Sughra Mohamed ◽  
Fadheela A. Alawainati ◽  
...  


Scilight ◽  
2021 ◽  
Vol 2021 (38) ◽  
pp. 381111
Author(s):  
Adam Liebendorfer


2021 ◽  
pp. 63-70
Author(s):  
В.А. Сясько ◽  
А.Ю. Васильев

The research results of the characteristics of magneto-inductive thickness gauges measuring transducers using harmonic excitation currents for the case of inspecting electrically conductive coatings are presented, on the basis of which a transducing algorithm is proposed and described in detail, which involves pulsed excitation of a magnetic field and the use of the induced EMF area as a primary informative parameter when suppressing the influence of network and pulse noise, used in serial thickness gauges of metallic non-ferromagnetic coatings on ferromagnetic substrates.



2021 ◽  
Vol 129 (12) ◽  
pp. 123101
Author(s):  
Milian Kaiser ◽  
Yang Li ◽  
Jonas Schwenzer ◽  
Marius Jakoby ◽  
Isabel Allegro ◽  
...  


Polyhedron ◽  
2021 ◽  
Vol 195 ◽  
pp. 114975
Author(s):  
Murat Erdem ◽  
Eda Korkmaz ◽  
Gülşen Kösoğlu ◽  
Erem Ahmetali ◽  
Nazli Farajzadeh ◽  
...  




2021 ◽  
Author(s):  
Anita Devi ◽  
Shruthi Nair ◽  
Sumit Yadav ◽  
Arijit Kumar De

Crucial to effective optical trapping is the ability to precisely control the nature of force/potential to be attractive or repulsive. The nature of particle being trapped is as important as...



2020 ◽  
Vol 117 (25) ◽  
pp. 251105
Author(s):  
S. Shi ◽  
A. Zaslavsky ◽  
D. Pacifici


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