The radiation forces on a Rayleigh dielectric particle induced by a highly focused parabolic scaling Bessel beam (PSBB) are investigated. Numerical results show that the zero-order PSBB can be used to trap a high-index particle at the focus and near the focus by the first-order PSBB. For the low-index particle, it can be guided or confined in the dark core of the nonzero-order PSBB but cannot be stably trapped in this single-beam trap. Further, we analyze the condition of trapping stability. It is found that the lower limit in the particle radius for stable trapping is different for different orders.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.56.001763 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Assessment of the Knowledge of Healthcare Professionals Regarding Radiological Examination in Lactating Mothers: A Cross-Sectional Survey Study in the Kingdom of Bahrain.
Cureus
December 2024
Pediatrics and Neonatology, Bahrain Defence Force Royal Medical Services, Riffa, BHR.
Objectives Breastfeeding is critical for a mother's health, as well as the development and survival of her infant. Healthcare personnel are a reliable source of information for breastfeeding mothers during and after radiological procedures, assuming their understanding is appropriate. As a result, this study analyzed healthcare professionals' knowledge of breastfeeding and radiological tests on lactating mothers.
View Article and Find Full Text PDFEffect of photobiological regulation of green laser on orthodontic tooth retention in rats.
Lasers Med Sci
January 2025
Shanxi Medical University School and Hospital of Stomatology, Shanxi Bethune Hospital, Taiyuan, Shanxi, China.
Green lasers have a stronger effect on promoting osteoblast differentiation, which is critical for orthodontic tooth retention. This study investigated the impact of green laser photobiomodulation on orthodontic tooth retention in rats. A total of 100 male Sprague-Dawley rats were divided into two groups: Group A (control) and Group B (green laser irradiation).
View Article and Find Full Text PDFRadiation-Induced Tissue Regeneration: Pathways, Mechanisms, and Therapeutic Potential.
Hematol Oncol Clin North Am
January 2025
Department of Radiation Oncology, Institute for Onco-Physics, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY 10461, USA. Electronic address:
This article explores the paradoxic nature of radiation as both a destructive and regenerative force. The article examines the interplay of signaling pathways, immune modulation, and stem cells in tissue regeneration post radiation, emphasizing the roles of key pathways like Wnt, Hedgehog, Notch, and p53. It highlights advancements in low-dose radiation therapy, extracellular vesicles, and stem cell-based interventions.
View Article and Find Full Text PDFDecreased opioid receptor availability and impaired neurometabolic coupling as signatures of morphine tolerance in male rats: A positron emission tomography study.
Biomed Pharmacother
January 2025
Laboratoire d'Imagerie Biomédicale Multimodale (BioMaps), CEA, CNRS, Inserm, Service Hospitalier Frédéric Joliot, Université Paris-Saclay, Orsay, France. Electronic address:
Translational neuroimaging techniques are needed to address the impact of opioid tolerance on brain function and quantitatively monitor the impaired neuropharmacological response to opioids at the CNS level. A multiparametric PET study was conducted in rats. Rats received morphine daily to induce tolerance (15 mg/kg/day for 5 days), followed by 2-day withdrawal.
View Article and Find Full Text PDFA method of enhanced shear wave elastography based on Chirp coded excitation.
Ultrasonics
January 2025
Medical Ultrasound Department for the Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, China. Electronic address:
Shear Wave Elastography (SWE) is an imaging technique that detects shear waves generated by tissue excited by Acoustic Radiation Force (ARF), and characterizes the mechanical properties of soft tissue by analyzing the propagation velocity of shear wave. ARF induces a change in energy density through the nonlinear propagation of ultrasound waves, which drives the tissue to generate shear waves. However, the amplitude of shear waves generated by ARF is weak, and the shear waves are strongly attenuated in vivo.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!