Results 31 to 40 of about 4,875,232 (303)

The Influence of Problem Based Learning on Critical Thinking Ability for Students in Optical Instrument Topic

open access: yesJurnal Pendidikan Fisika Indonesia, 2019
The research aims to reveal the influence of the Problem Based Learning (PBL) model on students' critical thinking ability in optical instrument material. This research is a quasi-experimental research with Pre-test and Post-test Design.
P. Parno   +3 more
semanticscholar   +1 more source

A rapid microfluidic platform with real-time fluorescence detection system for molecular diagnosis

open access: yesBiotechnology & Biotechnological Equipment, 2019
The development of microfluidics-based quantitative real-time polymerase chain reaction for molecular diagnosis is becoming a burgeoning field of research.
Zhigang Li   +7 more
doaj   +1 more source

The Utility of Optical Instrument “ORALOOK®” in the Early Detection of High-risk Oral Mucosal Lesions

open access: yesAnticancer Research, 2019
Background/Aim: Oral cancer screening is important for early detection and early treatment, which help improve survival rates. Biopsy is invasive and painful, while fluorescence visualization is non-invasive, convenient, and real-time, and examinations ...
T. Morikawa, A. Kosugi, T. Shibahara
semanticscholar   +1 more source

Plasmonic Holographic Metasurfaces for Generation of Vector Optical Beams

open access: yesIEEE Photonics Journal, 2017
In this paper, a 2-D anisotropic metasurface for generating an azimuthally polarized beam is structured with a patterned metallic layer, which is composed of a fork hologram and periodically aligned sector-shaped antennas in annular circles.
Jing Wen   +6 more
doaj   +1 more source

Fano resonances for high performance sensing in an asymmetric resonator based on hybrid graphene/dielectric metasurfaces

open access: yesAIP Advances, 2021
Improving the performance and sensitivity of metallic sensors is challenging because of the Ohmic loss that occurs for traditional metallic materials.
Shuhua Cao   +5 more
doaj   +1 more source

High-Efficiency Plasmonic Lens Based on Archimedes-Spiral with Cross Section of an Asymmetric Slot

open access: yesCrystals, 2022
A high-efficiency plasmonic lens composed of a single Archimedes-spiral slot with a cross section of an asymmetric slot is proposed. By adding an auxiliary nanocavity under the primary spiral slot, unidirectional plasmonic waves can be efficiently ...
Yangwan Zhong   +4 more
doaj   +1 more source

The Classification of Optical Instruments [PDF]

open access: yesJournal of the Optical Society of America, 1922
Exception is taken to the classification of optical instruments by the signs of their powers, and an alternative division comprising five classes is proposed, based upon the separation of the four Gaussian constants into two groups according to their signs. This classification cannot be modified by the addition to the system of inverting prisms and the
openaire   +2 more sources

Investigation of the Crystallization Characteristics of Intermediate States in Ge2Sb2Te5 Thin Films Induced by Nanosecond Multi-Pulsed Laser Irradiation

open access: yesNanomaterials, 2022
Laser pulses can be utilized to induce intermediate states of phase change materials between amorphous and crystalline phases, making phase change materials attractive and applicable for multi-level storage applications.
Jia Du   +5 more
doaj   +1 more source

The Lissajous lens: a three-dimensional absolute optical instrument without spherical symmetry.

open access: yesOptics Express, 2015
We propose a three dimensional optical instrument with an isotropic gradient index in which all ray trajectories form Lissajous curves. The lens represents the first absolute optical instrument discovered to exist without spherical symmetry (other than ...
A. Danner, Harriet L. Dao, T. Tyc
semanticscholar   +1 more source

The Development of a Physics Knowledge Enrichment Book “Optical Instrument Equipped with Augmented Reality” to Improve Students’ Learning Outcomes

open access: yes, 2018
This study aims to develop a physics knowledge enrichment book which is provided with augmented reality focusing on the proper optical instruments as the subject to improve students’ learning outcomes.
I. M. Astra, F. Saputra
semanticscholar   +1 more source

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