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Sensors, Volume 20, Issue 10

May-2 2020 - 261 articles

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Cover Story: Diffuse optical tomography is a non-invasive photonics-based imaging technology suited to functional brain imaging. Recent developments have proven the possibility to integrate time-resolved detectors inside the probe, in direct contact with the tissue under investigation, maximizing light harvesting and reducing system complexity. We have developed a system based on 8 probe-hosted SiPM detectors and 6 light injection fibers. Using 2 wavelengths permits quantifying both oxy- and deoxy-hemoglobin concentration evolution in the tissue. An automatic switch enables a complete tomographic acquisition to be performed in less than one second. The system was challenged against two in vivo tests: arm cuff occlusion and motor cortex brain activation. The results show that the tomographic system makes it possible to follow the evolution of brain activation over time with a 1 s resolution. View this paper.

Articles (261)

  • Comment
  • Open Access
7 Citations
3,553 Views
5 Pages

25 May 2020

The recent paper “Hurdle Clearance Detection and Spatiotemporal Analysis in 400 Meters Hurdles Races Using Shoe-Mounted Magnetic and Inertial Sensor” (Sensors 2020, 20, 354) proposes a wearable system based on a foot-worn miniature inerti...

  • Article
  • Open Access
6 Citations
3,334 Views
20 Pages

25 May 2020

Deep-sea environmental datasets are ever-increasing in size and diversity, as technological advances lead monitoring studies towards long-term, high-frequency data acquisition protocols. This study presents examples of pre-analysis data treatment ste...

  • Review
  • Open Access
78 Citations
12,817 Views
26 Pages

Hollow-Core Photonic Crystal Fiber Gas Sensing

  • Ruowei Yu,
  • Yuxing Chen,
  • Lingling Shui and
  • Limin Xiao

25 May 2020

Fiber gas sensing techniques have been applied for a wide range of industrial applications. In this paper, the basic fiber gas sensing principles and the development of different fibers have been introduced. In various specialty fibers, hollow-core p...

  • Review
  • Open Access
38 Citations
9,187 Views
26 Pages

25 May 2020

Most existing augmented reality (AR) applications are suitable for cases in which only a small number of real world entities are involved, such as superimposing a character on a single surface. In this case, we only need to calculate pose of the came...

  • Article
  • Open Access
17 Citations
4,268 Views
19 Pages

25 May 2020

The integration of unmanned aerial vehicles (UAVs) with a cognitive radio (CR) technology can improve the spectrum utilization. However, UAV network services demand reliable and secure communications, along with energy efficiency to prolong battery l...

  • Article
  • Open Access
193 Citations
15,990 Views
23 Pages

Remote Monitoring of Human Vital Signs Based on 77-GHz mm-Wave FMCW Radar

  • Yong Wang,
  • Wen Wang,
  • Mu Zhou,
  • Aihu Ren and
  • Zengshan Tian

25 May 2020

In recent years, non-contact radar detection technology has been able to achieve long-term and long-range detection for the breathing and heartbeat signals. Compared with contact-based detection methods, it brings a more comfortable and a faster expe...

  • Review
  • Open Access
29 Citations
4,648 Views
19 Pages

Selfishness in Vehicular Delay-Tolerant Networks: A Review

  • Ghani-Ur Rehman,
  • Anwar Ghani,
  • Shad Muhammad,
  • Madhusudan Singh and
  • Dhananjay Singh

25 May 2020

Various operational communication models are using Delay-Tolerant Network as a communication tool in recent times. In such a communication paradigm, sometimes there are disconnections and interferences as well as high delays like vehicle Ad hoc netwo...

  • Article
  • Open Access
5 Citations
2,873 Views
15 Pages

25 May 2020

A biological sensor for detection and identification of bacterial cells, including a resonator with a lateral electric field based on PZT ceramics was experimentally investigated. For bacterial immunodetection the frequency dependencies of the electr...

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