Optics and Photonics News

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A Novel Way to Improve the Radiation of Molecules

Researchers are creating novel methods to detect trace particles in the environment, such as volatile organic chemicals. These methods include advances in optical spectroscopy.

25 Aug 2022

Velocity Measurements in Highly Aerated Flow Using a BIV Technique

A study published in Water estimated the velocity field in highly aerated flow over a stepped spillway without sidewall constrain using the Bubble Image Velocimetry (BIV) method.

24 Aug 2022

Reducing Negative Effects of an Optical Linear Encoder

A recent study in Energies reviews the key characteristics of an optical encoder's accuracy, resolution, and repeatability. The experimental reading head for a Moiré effect-based linear optical encoder is utilized to investigate the impact of various reading head designs on an optical encoder's performance under varied mounting errors and dynamic circumstances.

24 Aug 2022

Study Proposes Novel Fluorescent Chemosensor for Copper Detection

A recent study published in Chemosensors presents a unique donor-p-acceptor luminous dye as a sensor for Cu2+ ions. The 3,5-diphenyl-dicyanomethylene-4-H-pyran (DCM) that makes up the fluorophoric core has extended styryl chains at positions 2 and 6 for metal coordination and is used for copper (II) detection.

24 Aug 2022

Researchers Develop Novel Fiber Optic Humidity Sensor

In an article published in the journal Sensors, researchers have developed a fiber optic humidity sensor using a leakage mode that enables measurements at low humidity.

24 Aug 2022

Researchers Study Optical Turbulence Characteristics in the Upper Troposphere-Lower Stratosphere Region

In an article published in Remote Sensing, researchers have analyzed the properties of various profiles of atmospheric refractive index structure constant over the Lhasa Region. The valuable in situ sounding data necessary for the analysis were collected at different strength conditions of an Asian summer monsoon anticyclone (ASMA) in August 2018.

24 Aug 2022

Researchers Develop Colorimetric Film Sensor for Gaseous Ammonia Detection

In an article published in Biosensors, researchers have constructed a disposable, flexible, simple and cost-effective colorimetric film sensor to rapidly detect gaseous ammonia.

23 Aug 2022

ZnO Nanorod-Coated Optical Fiber Sensor for Diabetes Detection

A ZnO-coated optical fiber sensor for detecting a volatile organic compound biomarker for diabetes has been recently demonstrated in a study published in Sensors. The researchers used a coreless silica fiber (CSF) coupled with single-mode fiber (SMF) at both ends to synthesize the SMF-CSF-SMF structure.

23 Aug 2022

Novel Method to Determine the Optimal Canopy Shape for Shadow Fraction Estimation

A study published in Remote Sensing has designed a reflectance simulator to determine the optimal canopy shape for calculating the shadow fraction based on the reflectance measured by satellite sensors.

23 Aug 2022

Study Proposes Comprehensive Spatio-Temporal Landslide Monitoring

A study published in the journal Land proposed a comprehensive landslide monitoring method using the combination of landslide vegetation, surface deformation and susceptibility factors based on spatio-temporal data from various remote sensing sources.

23 Aug 2022