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The use of radio frequency techniques is increasing in various applications in biodetection as well diagnostic and therapeutic medicine. This work reports for radio frequency labelfree based systematic biodetection platform; which can be used to identify several types of viruses. The presented technique is able to identify the virus type with few minutes without the use of any biomarkers. A coaxial...
Recent L-band radiometry from the SMOS and Aquarius satellite missions has sparked interest in studying low-frequency microwave-emission from the polar ice sheets [1, 2]. Low frequency microwaves have less extinction and extremely long penetration depth sin glacier ice (several hundreds to one thousand meters), and thus can provide sensitivity to the subsurface temperature profile. The Ultra-Wide...
It's very important to detect the leakage of oil pipeline timely and accurately in order to reduce the losses and ensure the smooth operation of oil pipeline. However, the leakage monitoring of the pipeline is difficult because normally the pipeline is very long and is often buried underground or underwater. Brillouin optical time domain reflectometry (BOTDR), which can distributedly measure the temperature...
Brillouin dynamic gratings (BDGs) has been, in recent years, addressed using a polarization-maintaining fiber with many prominent advantages and proved that the BDGs have a profound high sensitivity to fiber birefringence changes. When the two parallel polarized counter-propagating pump waves with a frequency offset of fiber Brillouin frequency shift, and the orthogonally polarized probe pulse wave...
Resonance phenomenon in general allows large responses from small inputs. This effective amplification effect has been in successful use in diverse range of sensing applications. More specifically, in case of optical resonances, various micro- and nano-resonator designs have been proposed so far with a large range of performance parameters. On the one hand, micro-scale dielectric resonators can provide...
Current technology requires diabetics to undergo painful, inconvenient, and discontinuous measurement processes several times a day. Thus, more convenient ways of measuring glucose by utilizing surface enhanced Raman spectroscopy (SERS) technique can be highly desirable. To accomplish commercially viable SERS technologies for glucose detection, an optimal substrate must be designed with higher electromagnetic...
Optical sensing offers unrivalled precision with real-time monitoring, but the complexity in implementing the optical sources has so far limited deployments to high value measurement systems. Innovations in photonic integration are beginning to enable breakthroughs in terms of cost, size and performance. Integrated sources and readouts can be created with large-scale semiconductor wafer production...
Previous work published by the authors has considered a passive bio-degradable implant as a novel method to monitor the healing of soft tissue trauma. By implanting a passive tag inside the wound area during the final stages of surgery can allow early stage diagnosis of infection. The tag is passive so an off-body receiver uses backscattering waves to communicate with the implanted tag. As the tag...
We found that numerical values of the electric conductivity (20 degree C) of various commercially available soup are close to that of the Ringer's solution. Application of an ELF magnetic field or setting on a magnetized particles disc reduced hysteresis loop area of measured conductivity temperature characteristics of solution food and improved the flavor and taste. Caspian-Sea yogurt were well cultured...
In the dynamical Casimir effect (DCE), a boundary condition for the electromagnetic field is changed rapidly, resulting in generation of pairs of photons [1]. This was experimentally demonstrated in 2011 [2]. Both generation of photons and two-mode squeezing were observed. Quantum theory predicts that the photon pairs are entangled and that the resulting electromagnetic field is in a nonclassical...
Recently, terahertz (THz) technology is being advanced towards industrial application such as gas sensing or nondestructive testing and so forth. With progress in device technology, sources and detectors operating in the THz region have been developed. By combining the THz detector with a high power THz source, monitor systems for the applications mentioned above can be constructed. For this purpose,...
To help consumers enjoy healthy food, technology investigation for food freshness sensing are conducted. In this study meat is selected as the detection target based on a consumer survey. Near infrared spectroscopy, pH, CO2, TVOC, and auto fluorescence are investigated. The results showed that CO2 and TVOC could be a used for meat freshness sensing in a closed space such as box. Near infrared spectroscopy...
The results of observing in a real time the process of aluminum nitride synthesis occurring by combustion of aluminum nanopowder in the air are discussed in the paper. The obtained results convincingly evidence that observation of microstructure formation processes by means of the laser monitor is quite accessible. The video images allow seeing such structure formation phases as aluminum nanopowder...
In this study we investigated correlations between soil temperature and radar backscattering coefficient (HH-pol) measured by the ALOS PALSAR at the frequency of 1.26 GHz, and brightness temperatures measured by SMOS/MIRAS (viewing angle 55?, V -pol) at the same frequency and GCOM-W1/AMSR2 (V -pol) in the range of frequencies from 6.9 GHz to 18.7 GHz near Vaskiny Dachi weather station (70.2955N, 68...
Hysteresis loop area of electric conductivity temperature characteristics for 0–50 degree C region of pure water and Ringer's solution (Krebs solution) decreased in an extremely low frequency (ELF) small magnetic field or on a magnetized particles disc. The magnetic effect with ELF small magnetic field were higher in a double frequencies ELF small magnetic field than in a single frequency ELF small...
Dielectric models of topsoil are a crucial element of remote sensing retrieval algorithms that are used to obtain geophysical characteristics of the land surface, such as soil moisture, temperature, and freeze/thaw state. Contemporary radiometers and radars acting from space are functioning in the frequency range from 1.2 GHz to 89 GHz. In addition, the GPR and TDR instruments, which are used for...
Most spin squeezed states are realized in cold atom systems containing relatively small number of atoms. However, in quantum limited metrology, the signal is proportional to atom number N while the noise is proportional to √N. The signal noise ratio (SNR) increases as atom number increases.
A unique wide band receiver for radio astronomy has been designed and constructed. Receivers used for radio astronomy consist of two parts, the front end cold electronics and the back end warm electronics. While the cold electronics provides for a low noise amplifier and receiver calibrations, the warm electronics provides analog signal processing that shapes and filters the signals before digitizing...
We report on a precise in situ procedure to calibrate the heat flux sensor of a near-field scanning thermal microscope [1, 2]. This microscope is based on a scanning tunneling microscope which is equipped with a sub-micro sized, coaxial thermocouple with a tip apex radius of about 30 nm. The microscope is able to measure lateral changes in heat transfer with a resolution of about 7nm [3, 4]. The calibration...
Development of high power laser systems is limited by the problem of optical materials overheating by laser radiation. For optical absorptance testing laser calorimetry [1] is widely used. Its main part is temperature kinetics measurement of the sample exposed to laser radiation. Temperature is measured mostly by indirect methods with sensors adjusted to sample surface. However, absorption of scattered...
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