Abstract This study investigates the fundamental performance of Fe 3 O 4 /Polyvinylidene Fluoride (PVDF) magnetic nanofiber membranes as a field sensor. The were fabricated using electrospinning method. success formation was confirmed by XRD and FTIR characterizations. had an average diameter 544.7 nm. results property analysis showed that superparamagnetic with saturation magnetization value 6.1 emu/g. Furthermore, sensor sensitivity also evaluated 0.98 mV/mT. Interestingly, sensor’s shows...

Mn1-x Zn x Fe2O4 ferrofluids were produced from natural sand for magnetic sensors and radar absorbing materials. The X-ray diffraction data showed that the partially substituted Mn Fe ions to construct a spinel structure. increasing composition decreased lattice parameters of transmission electron microscopy images filler nanoparticles tended agglomerate in three dimensions. Lognormal mass fractal models used fit small-angle scattering demonstrated formed chain-like structures with dimension...

A simple design sensor is demonstrated using a fabricated multimode plastic fiber coupler in conjunction with reflective intensity modulation technique. The performances of this are investigated for different light sources. This uses only one sending and receiving the therefore back slope exists. shows highest performance use yellow source, which has smallest beam divergence. sensitivity, linear range, resolution dynamic range obtained at 0.0001 mV/μm, 1500 μm, 70 5.0 mm, respectively....

Biofilms are able to cause microorganisms be 80% more resistant antibiotics. The extracelullar polymeric substance (EPS) in biofilm functions protect bacteria, making it difficult for antibiotics penetrate the layer. This study aims determine effective- ness of photodynamic inactivation with blue diode laser reduce Staphylococcus aureus at various ages biofilms. light source is a 403 nm an energy power about 27.65 ± 0.01 mW. was designed two groups: Group C untreated control group variations...

A simple fiber optic displacement sensor (FODS) based on intensity modulation technique is investigated using a bundle multimode plastic as probe for various medals detection. The consists of light source, probe, and photodiode detector. capable measuring displacements flat ranging from 0.05 to 4.2 mm red source wavelength 630 nm. highest sensitivity the found be 0.0048 mV/μm over 50-650 µm gold medal. highly sensitive at front slope very useful close distance target. simplicity design, high...

Nowadays, a high sensitive sensor for the magnetic field has become an essential tool that vastly desired in several fields, especially biomedical application. Therefore, development of preparing material becomes crucial to be conducted. In this experimnet, we propose use Fe3O4 fluid prepared from local iron sand Indonesia as sensor. work, optical activities effect magneto-optics were performed under varying external field. The polarization direction change laser was detected function with...

The performances of the fiber optic-based displacement sensor with reflective and transmitting techniques were investigated. effects axial on detected voltage investigated for different tilting angles receiving fibers. Three types light sources used, yellow red He-Ne including a green pointer laser at peak wavelengths 594, 633, 533 nm correspondingly. highest sensitivity resolution obtained 0.0017 mV/μm 4 μm, respectively employment 594 as source. These attributed to output power beam...

Abstract Non‐touch detection of rhodamine B concentration in distilled water using fiber coupler and concave mirror (CM) successfully demonstrated. Based on displacement sensor, the is detected through peak voltage value which resulted from profile. Using He‐Ne (543 nm) laser as source, sensor probe CM with curvature radius 12 mm reflector well sample container, can be range 0‐20 ppm resolution 0.26 ppm.

Detection of rhodamine B concentration in distilled water can be conducted without direct contact between the sensor probe and sample using fiber bundle as a concave mirror container. The used is concentric pair probe. working mechanism based on displacement absorption laser light at wavelength 543 nm. was detected through valley peak voltage resulting from to surface. best performance shown by that uses with detection range 0–20 ppm resolution 0.6 ppm.

<ns3:p>Background <ns3:italic>Aggregatibacter actinomycetemcomitans</ns3:italic> and <ns3:italic>Enterococcus faecalis</ns3:italic> are pathogenic bacteria of the oral cavity that cause various diseases such as periodontitis endodontics. These easily resistant to antibiotics. Photodynamic inactivation (PDI) is a method inactivating microorganisms utilizes light activate photosensitizer agent (PS) produces reactive oxygen species causing cell lysis. Methods This study used PDI with 405 nm...

We proposed a graphene coated microfiber-based sensor for enhancing Aflatoxin B1 detection at room temperature. The heat-and-pull technique was used to fabricate the microfiber while layer using drop-casting technique. samples are as sensing area soaking solution, whereby prepared graphene-coated probe. is based on modulation of transmission intensity and wavelength shift induced by alteration concentration aflatoxin from 0 ppm 10 ppm. There an increase in sensitivity 0.129 dBm/ppm 0.187...

<ns3:p>Background <ns3:italic>Aggregatibacter actinomycetemcomitans</ns3:italic> and <ns3:italic>Enterococcus faecalis</ns3:italic> are pathogenic bacteria of the oral cavity that cause various diseases such as periodontitis endodontics. These easily resistant to antibiotics. Photodynamic inactivation (PDI) is a method inactivating microorganisms utilizes light activate photosensitizer agent (PS) produces reactive oxygen species causing cell lysis. Methods This study used PDI with 405 nm...

Background: Sexual harassment against children in Pekalongan City has escalated, with factors such as diminished parental supervision and shifting moral values contributing to its prevalence. Knowledge Gap: Existing literature primarily explores legal repercussions short-term psychological impacts, leaving a gap comprehensive studies on long-term emotional effects effective protection measures. Aims: This study aims fill these gaps by identifying causative factors, evaluating impacts over...

Telah dilakukan fabrikasi directional coupler simetri 2x2 dari bahan serat optik plastik (POF) step-index multimode dengan metode fused. Bahan untuk adalah tipe FD-620-10 diameter 1 mm. Fabrikasi cara memoles sepasang panjang daerah interaksi kopling bervariasi dan lebar gap konstan, pasangan yang telah dipoles kemudian digabungkan. menghasilkan empat buah coupler, salah satu hasil parameternya memenuhi standar yaitu nilai ratio coupling 0,245 toleransi dibawah 10% serta excess loss lebih kecil 2 dB.