Results 21 to 30 of about 164,526 (254)
Laser–Accelerated Plasma–Propulsion System
Applied Sciences, 2021 In this paper, the laser-accelerated plasma–propulsion system (LAPPS) for a spacecraft is revisited. Starting from the general properties of relativistic propellants, the relations between specific impulse, engine thrust and rocket dynamics have been ...
Daniele Palla, Gabriele Cristoforetti
doaj +1 more source
Investigation and Mitigation of Noise Contributions in a Compact Heterodyne Interferometer
Sensors, 2021 We present a noise estimation and subtraction algorithm capable of increasing the sensitivity of heterodyne laser interferometers by one order of magnitude.
Yanqi Zhang +3 more
doaj +1 more source
Colorimetric Phosphate Detection Using Organic DFB Laser Based Absorption Spectroscopy
Micromachines, 2021 A novel compact laser absorption spectrometer is developed for colorimetric detection. We demonstrate the realization of the system as well as example measurements of phosphate in water samples based on the malachite green (MG) method.
Thilo Pudleiner +3 more
doaj +1 more source
XUV Fluorescence Detection of Laser-Cooled Stored Relativistic Ions
Atoms, 2023 An improved moveable in vacuo XUV fluorescence detection system was employed for the laser cooling of bunched relativistic (β = 0.47) carbon ions at the Experimental Storage Ring (ESR) of GSI Helmholtzzentrum Darmstadt, Germany.
Ken Ueberholz +24 more
doaj +1 more source
Photonics, 2023 In this paper, the stabilization and high efficiency of an unstable Second Harmonic Generation (SHG) of an Nd:YVO4 laser with a KTP intracavity is demonstrated.
Samuel Mardoqueo Afanador Delgado +5 more
doaj +1 more source
Laser-assisted lip repositioning surgery: Novel approach to treat gummy smile
Journal of Indian Society of Periodontology, 2017 Excessive gingival display (EGD) resulting in a “gummy smile” is a major esthetic concern with ramifications in an individual's personal and social life. Numerous treatment modalities have been used for the correction of EGD.
Sana Farista +3 more
doaj +1 more source
Indian Journal of Dental Sciences, 2023 Excessive gingival display is matter of concern for a lot of patients and affects their psychological well-being. Various methods have been employed to reduce excessive gingival display but with variable results.
Simran Ghumman +5 more
doaj +1 more source
Metals, 2021 The present work is devoted to the numerical analysis of the high-power laser beam welding of thick sheets at different welding speeds. A three-dimensional transient multi-physics numerical model is developed, allowing for the prediction of the keyhole ...
Antoni Artinov +3 more
doaj +1 more source
FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
wiley +1 more source
Sensors, 2021 Optical fiber characterization using whispering gallery mode resonances of the fiber itself has been demonstrated to be a powerful technique. In this work, we exploit the thermal sensitivity of whispering gallery mode resonances to characterize the pump ...
Xavier Roselló-Mechó +4 more
doaj +1 more source