Optical phased array (OPA) devices are being actively investigated to develop compact solid-state beam scanners, which are essential in fields such as LiDAR, free-space optical links, biophotonics, etc. Based on the unique nature of perfluorinated polymers, we propose a polymer waveguide OPA with the advantages of low driving power and high optical throughput. Unlike silicon photonic OPAs, the polymer OPAs enable sustainable phase distribution control during beam scanning, which reduces the burden of beamforming. Moreover, by incorporating a tunable wavelength laser comprising a polymer waveguide Bragg reflector, two-dimensional beam scanning is demonstrated, which facilitates the development of laser-integrated polymeric OPA beam scanners.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8134440 | PMC |
| http://dx.doi.org/10.1038/s41598-021-90120-x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A Double-Blind Randomized Crossover Trial Comparing the Esthetic Outcomes Of CAD-CAM Provisional Restorations Fabricated Using CBCT And IOS Acquisition Methods.
J Dent
December 2024
Professor and Clinic director, Clinic of General-, Special Care- and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich Switzerland. Electronic address:
Objectives: This double-blind randomised crossover trial aimed to compare the aesthetic outcomes of CAD-CAM manufactured provisional restorations created using cone beam computed tomography (CBCT) and intraoral scanners (IOS) acquisition methods.
Methods: Twelve participants (mean-age: 38 ± 5 years) requiring full mouth rehabilitation were included in this crossover trial. Two sets of identical CAD-CAM provisional restorations, differing only in the method of data acquisition (A: CBCT, B: IOS), were fabricated.
Immediate full-arch rehabilitation of edentulous jaws on 4 or 6 implants using a photogrammetry system: A retrospective study up to 2 years of follow-up.
J Stomatol Oral Maxillofac Surg
December 2024
School of Stomatology, Shandong First Medical University, Jinan, Shandong, China; Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China. Electronic address:
Accurately recording the deficiency of the three-dimensional position of dental implants and the predetermined occlusal relationship of edentulous jaws presents a significant challenge. This study aimed to achieve a truly digital workflow of immediate full-arch implant restoration by combinedcone-beam computed tomography (CBCT), photogrammetry (PG) devices, and intraoral scanners (IOS). This approach significantly reduces patient tooth loss time, minimizes the overall "chair time", and provides precise, comfortable, and efficient implant restoration treatment.
View Article and Find Full Text PDFThree-dimensional dosimetry using multiple-energy delivery and a single-layer detector for quality assurance in proton pencil beam scanning.
Med Phys
December 2024
Medical Physics Department, Azienda Provinciale per i Servizi Sanitari (APSS), Trento, Italy.
Background: In Proton Therapy, the presence of implants along the beam path is known to potentially affect the dose distribution. The way such implants are managed in the planning process can vary in the different treatment planning systems (TPSs) and different centers. A specific validation procedure should be accomplished to verify the accuracy of TPS computation in these conditions and accept the applied process before treating patients.
View Article and Find Full Text PDFDesign and construction of gradient coils for an MRI-guided small animal radiation platform.
Heliyon
February 2024
Innovative Technology Of Radiotherapy Computations and Hardware (iTORCH) Laboratory, Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, 75390, TX, USA.
Small animal radiation experiments use a dedicated hardware platform to deliver radiation to small animals to support pre-clinical radiobiological studies. Image guidance is critical to achieve experiment accuracy. MR-based image guidance became recently available in human radiation therapy by integrating an MR scanner with a medical linear accelerator.
View Article and Find Full Text PDFObjective: Aim: To investigate the usage trends of different 3D digital technologies in modern orthodontics during the previous eight years to identify their future prospects.
Patients And Methods: Materials and Methods: A systematic literature search on PubMed revealed 258,059 publications concerning digital technologies in modern orthodontics. Amongst 125 eligible articles, we chose 37 high quality articles.
Want 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!