Results 41 to 50 of about 3,712 (221)

Study of the Errors in Interpolated Fast Fourier Transform for Interferometric Applications

Metrology
Frequency estimation is often the basis of various measurement techniques, among which optical distance measurement stands out. One of the most used techniques is interpolated fast Fourier transform due to its simplicity, combined with good performance ...
Federico Cavedo, Parisa Esmaili, Michele Norgia   +2 more
doaj   +1 more source

Probing multipulse laser ablation by means of self-mixing interferometry [PDF]

Applied Optics, 2018
In this work, self-mixing interferometry (SMI) is implemented inline to a laser microdrilling system to monitor the machining process by probing the ablation-induced plume. An analytical model based on the Sedov-Taylor blast wave equation is developed for the expansion of the process plume under multiple-pulse laser percussion drilling conditions ...
DONADELLO, SIMONE, Demir, Ali Gökhan, Previtali, Barbara   +2 more
openaire   +4 more sources

Self-mixing interferometry: A universal yardstick for optical measurements

, 2011
Self-mixing interferometry (SMI) is a new scheme of interferometry having several advantages compared to standard configurations: it can work with no optical part external to the laser, is self-aligned, is immune to external stray light, and can ...
Silvano Donati, Giuseppe Martini, DONATI, SILVANO, MARTINI, GIUSEPPE   +3 more
core   +1 more source

Influence of Fluorescence to Photon Lifetime Ratio on Detection Sensitivity in Laser Self-Mixing Interferometry

IEEE Access, 2020
Laser self-mixing interferometry (SMI) has been widely applied in the fields of precision measurement in scientific research, industry and biomedicine, and most researchers preferentially utilize laser diodes (LD) as light sources due to their compact ...
Ke Kou, Cuo Wang, Jun Weng
doaj   +1 more source

Ultra‐High‐Throughput Discovery of Multifunctional Polyphenolic Coatings on Droplet Microarrays

Advanced Materials, EarlyView.
An ultra‐high‐throughput (UHT) combinatorial strategy enables the miniaturized synthesis and screening of ≈30 000 polyamine‐polyphenolic (PaPp) coatings using droplet microarrays (DMA). This approach reveals hundreds of previously unknown fluorescent, redox‐active, and antibacterial materials, including multifunctional, cell‐compatible surfaces ...
Vania Tanda Widyaya, Joaquín E. Urrutia Gómez, Paul Reuß, Alexander Welle, Rolf A. Gattung, Jana Mayer, Peter Krolla, Markus Reischl, Pascal Friederich, Anna A. Popova, Thomas Schwartz, Pavel A. Levkin   +11 more
wiley   +1 more source

A Fiber-Coupled Self-Mixing Laser Diode for the Measurement of Young’s Modulus

Sensors, 2016
This paper presents the design of a fiber-coupled self-mixing laser diode (SMLD) for non-contact and non-destructive measurement of Young’s modulus. By the presented measuring system, the Young’s modulus of aluminum 6061 and brass are measured as 70.0 ...
Ke Lin, Yanguang Yu, Jiangtao Xi, Huijun Li, Qinghua Guo, Jun Tong, Lihong Su   +6 more
doaj   +1 more source

BioEISense: A Microfluidic Platform for Real‐Time Monitoring of Staphylococcus aureus Biofilm Formation and the Efficacy of Antibiofilm Agents

Advanced Materials Interfaces, EarlyView.
BioEISense is a microfluidic device with integrated impedance sensors, for real‐time, label‐free monitoring of S. aureus biofilms. In this study, the biofilm culture conditions were optimized to support sensitive and reproducible detection of biofilm formation and eradication under dynamic flow‐through conditions. The system was also validated for both
Jéssica Amorim, Laura Vesalainen, Loïc Dreano, Markus Haapala, Cristina D. Cruz, Päivi Tammela, Tiina M. Sikanen   +6 more
wiley   +1 more source

Improving Measurement Sensitivity for a Displacement Sensor Based on Self-Mixing Effect

IEEE Photonics Journal, 2018
When a part of light emitted by a laser is back-reflected or back-scattered from an external target and re-enters the laser cavity, both the laser intensity and its wavelength can be modulated. This is so-called self-mixing effect (SME).
Yuxi Ruan, Bin Liu, Yanguang Yu, Jiangtao Xi, Qinghua Guo, Jun Tong   +5 more
doaj   +1 more source

DNA Nanoarray for Multiplexed RNA Detection With Single‐Molecule Readout

Advanced Science, EarlyView.
A carrier‐based DNA nanoarray integrates programmable nucleic acid hybridization with solid‐state nanopore readout for direct RNA detection at single‐molecule resolution. A ternary encoding system enables 27 carriers with 81 addressable sensing sites, allowing the simultaneous identification of targets spanning a wide size range, from short microRNAs ...
Yunxuan Li, Yesheng Wang, Chunmiao Yu, Siyu Hou, Elli Mylona, Plamena Naydenova, Jingyuan Zhao, Hong Yuan, Jingsong Duan, Hendrik F. P. Runge, Stephen Baker, Jinbo Zhu, Ulrich F. Keyser   +12 more
wiley   +1 more source

Real time displacement sensor based on self-mixing interferometry [PDF]

2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings, 2012
This paper deals with the real time reconstruction of a self-mixing displacement signal under devices with limited resources. By implementing a first-order-hold interpolation used in digital-to-analog converters, the signal recovery problem has been reduced to the efficient usage of an adaptive filter with high potential of parallelism, suitable to ...
Luna Arriaga, Antonio, Bony, Francis, Bosch, Thierry   +2 more
openaire   +2 more sources