Results 41 to 50 of about 414 (165)

Miniature and MOEMS flow sensors [PDF]

15th AIAA Computational Fluid Dynamics Conference, 2001
Recent progress in the development of a miniature Laser Doppler Anemometer (LDA) and a micro optical shear stress sensor is described. Miniaturization of these sensors has been achieved with the use of integrated optics and micro fabrication techniques.
D. Fourguette, D. Modarress, F. Taugwalder, D. Wilson, M. Koochesfahani, M. Gharib   +5 more
openaire   +1 more source

Editorial for the Special Issue on Optical MEMS

Micromachines, 2019
Optical micro-electro-mechanical systems (MEMS), micro-opto-electro-mechanical systems (MOEMS), or optical microsystems are devices or systems that interact with light through actuation or sensing at a micron or millimeter scale [...]
Huikai Xie, Frederic Zamkotsian
doaj   +1 more source

GaAs MOEMS Technology [PDF]

, 2003
Many MEMS-based components require optical monitoring techniques using optoelectronic devices for converting mechanical position information into useful electronic signals. While the constituent piece-parts of such hybrid opto-MEMS components can be separately optimized, the resulting component performance, size, ruggedness and cost are substantially ...
Spahn, Olga B., Grossetete, Grant D., Cich, Michael J., Tigges, Chris P., Reno, John L., Peake, Gregory M., Klem, John F., Lean, Jen, Fuller, Charles T., Burkhart, Jeff, Bauer, Thomas, Sullivan, Charles T.   +11 more
openaire   +2 more sources

The Designing of Magnetic‐Driven Micromirror for Portable FTIRs

Journal of Sensors, Volume 2018, Issue 1, 2018., 2018
Fourier transform infrared spectroscopy is a widely used instrument to analyze and test different materials including organic and inorganic. Most of current commercial Fourier transform infrared spectrometers are limited in miniaturization and scanning velocity by their macroscopic components. MEMS FTIR spectroscopy is one of the important applications
Shaoxi Wang, Xuan Yuan, Paolo Bruschi
wiley   +1 more source

Recent Advances and Applications of External Cavity-QCLs towards Hyperspectral Imaging for Standoff Detection and Real-Time Spectroscopic Sensing of Chemicals

Photonics, 2016
External-cavity quantum cascade lasers (EC-QCL) are now established as versatile wavelength-tunable light sources for analytical spectroscopy in the mid-infrared (MIR) spectral range.
Ralf Ostendorf, Lorenz Butschek, Stefan Hugger, Frank Fuchs, Quankui Yang, Jan Jarvis, Christian Schilling, Marcel Rattunde, André Merten, Jan Grahmann, Dusan Boskovic, Thorsten Tybussek, Klaus Rieblinger, Joachim Wagner   +13 more
doaj   +1 more source

Unsupervised Domain Adaptation for Facial Expression Recognition Using Generative Adversarial Networks

Computational Intelligence and Neuroscience, Volume 2018, Issue 1, 2018., 2018
In the facial expression recognition task, a good‐performing convolutional neural network (CNN) model trained on one dataset (source dataset) usually performs poorly on another dataset (target dataset). This is because the feature distribution of the same emotion varies in different datasets.
Xiaoqing Wang, Xiangjun Wang, Yubo Ni, António D. P. Correia   +3 more
wiley   +1 more source

Improving Traffic State Prediction Model for Variable Speed Limit Control by Introducing Stochastic Supply and Demand

Journal of Advanced Transportation, Volume 2018, Issue 1, 2018., 2018
Variable speed limit (VSL) is becoming recognized as an effective way to improve traffic throughput and road safety. In particular, methods based on traffic state prediction exhibit promising potential to prevent future traffic congestion and collisions.
Yuwei Bie, Mudasser Seraj, Can Zhang, Tony Z. Qiu, David Z. W. Wang   +4 more
wiley   +1 more source

Energy Modelling and Analysis for Sustainable Energy System of Somalia

Energy Science &Engineering, Volume 14, Issue 1, Page 501-518, January 2026.
ABSTRACT To ensure sustainable management of energy systems and maintain their benefits over time, it's imperative to prioritise science‐based decision‐making models throughout energy policy formulation and management processes, however, there is a significant research gap regarding energy modelling in Somalia.
Abdisalan Moallim Hirsi, Shoaib Ahmed Khatri, Nayyar Hussain Mirjat, Musavir Hussain, Laveet Kumar, MD Shouquat Hossain   +5 more
wiley   +1 more source

Specialized directional beaming through a metalens and a typical application

Nanophotonics, Volume 7, Issue 1, Page 339-345, January 2018., 2018
Abstract The anomalous beaming effect of the periodic metallic corrugations functioning as a special case of kSP=2π/Λ is discussed and verified by means of both theoretical calculation and experimental probing. A metalens is designed on the basis of the special case. Unlike the conventional beaming of convergence or divergence, the metalens can realize
Kangyi Zhao, Hui Zhang, Yongqi Fu, Shaoli Zhu   +3 more
wiley   +1 more source

Reversal Asymmetry of Reciprocal Metasurface Enables Ultra‐Compact Varifocal Reflective Lens

Laser &Photonics Reviews, Volume 20, Issue 1, 8 January 2026.
The possibility of breaking the reversal symmetry of a lens without violating reciprocity is demonstrated. The freedom provided is utilized to realize an ultra‐compact reflective varifocal lens‐doublet based on a flat metasurface lens and a piezoelectric actuated micromirror.
Christopher A. Dirdal, Jesil Jose, Firehun Tsige Dullo, Grégory Bouquet, Paul C. V. Thrane, Zeljko Skokic, Johannes Skaar   +6 more
wiley   +1 more source