Browsing by Keywords "Optical sensors"
Now showing items 1-15 of 15
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Coupled plasmonic structures for sensing, energy and spectroscopy applications
(Bilkent University, 2015-08)Recent advances in nanofabrication and characterization methods have enabled the study of novel optical phenomena, thus boosting the research in nanophotonics and plasmonics. Metal nanostructures offer a route for the ... -
Differentiation and localization of targets using infrared sensors
(Elsevier, 2002)This study investigates the use of low-cost infrared emitters and detectors in the differentiation and localization of commonly encountered features or targets in indoor environments, such as planes, corners, edges, and ... -
A direct detection fiber optic distributed acoustic sensor with a mean SNR of 7.3 dB at 102.7 km
(Institute of Electrical and Electronics Engineers Inc., 2019)In this work, we present the experimental results of a direct detection π-OTDR based distributed acoustic sensor system. The system uses two cascaded acousto-optic modulators in order to generate optical pulses with very ... -
High‐speed atomic force microscopy using an integrated actuator and optical lever detection
(A I P Publishing LLC, 1996-09)A new procedure for high‐speed imaging with the atomic force microscope that combines an integrated ZnO piezoelectric actuator with an optical lever sensor has yielded an imaging bandwidth of 33 kHz. This bandwidth is ... -
Influence of phase function on modeled optical response of nanoparticle-labeled epithelial tissues
(2011)Metal nanoparticles can be functionalized with biomolecules to selectively localize in precancerous tissues and can act as optical contrast enhancers for reflectance-based diagnosis of epithelial precancer. We carry out ... -
A microfluidic based differential plasmon resonance sensor
(Elsevier, 2011)A new type of differential surface plasmon (SPR) sensor integrated with a microfluidic system is presented. The working principle of the microfluidic device is based on hydrodynamic modulation of two laminar streams inside ... -
Micromachined III-V cantilevers for AFM-tracking scanning Hall probe microscopy
(Institute of Physics, 2003)In this paper we report the development of a new III-V cantilever-based atomic force sensor with piezoresistive detection and an integrated Hall probe for scanning Hall probe microscopy. We give detailed descriptions of ... -
Novel integrated optical displacement sensor for scanning force microscopies
(IEEE, 2003)A novel displacement sensor for scanning force microscoples using an integrated optical micro-ring resonator is described. Device operates by monitoring the changes in transmission spectrum of micro-ring resonator. This ... -
Object detection using optical and LiDAR data fusion
(IEEE, 2016-07)Fusion of aerial optical and LiDAR data has been a popular problem in remote sensing as they carry complementary information for object detection. We describe a stratified method that involves separately thresholding the ... -
An optical microcantilever with integrated grating coupler
(IEEE, 2009-06)In this paper, we have fabricated an optical cantilever with an integrated grating coupler. We have used an inexpensive and repeatable method for integrating the grating to the silicon cantilever with a microfabrication ... -
Position-invariant surface recognition and localization using infrared sensors
(SPIE, 2003)Low-cost infrared emitters and detectors are used for the recognition of surfaces with different properties in a location-invariant manner. The intensity readings obtained with such devices are highly dependent on the ... -
Pressure sensing using micromachined asymmetric integrated vertical coupler
(IEEE, 2003)Analysis of a novel pressure sensor based on a SOI asymmetric vertical coupler is presented. The integrated optical component is a coupler composed of a single mode low index waveguide and a thin silicon slab. -
Simultaneous extraction of geometry and surface properties of targets using infrared intensity signals
(IEEE, 2005)We propose the use of angular intensity signals obtained with low-cost infrared sensors and present an algorithm to simultaneously extract the geometry and surface properties of commonly encountered targets in indoor ... -
Simultaneous extraction of geometry and surface properties of targets using simple infrared sensors
(SPIE, 2004)We investigate the use of low-cost infrared (IR) sensors for the simultaneous extraction of geometry and surface properties of commonly encountered features or targets in indoor environments, such as planes, corners, and ... -
Warm white light generating nanocrystal hybridized LEDs with high color rendering index
(IEEE, 2008-11)By hybridizing custom-design CdSe/ZnS core-shell NC emitters on InGaN/GaN based blue LEDs, we demonstrated three warm-white light sources with desirably low CCT ranging from 3227 K to 1982 K as is required for SSL indoor ...
