Page 147 - 2024-Vol20-Issue2
P. 147
143 | Badr, Murdas & Aldhahab
properties of this optical antenna are investigated, including optical nanoantenna and the suggested technique can be used
near- and far-field intensities, directivity, and sensitivity to its in cancer treatment.
gap width and it can be utilized to treat cancer of different In [51], an optical nanoantenna for single-molecule-based
biological tissues, such as the kidney, lung, and breast [46]. plasmonic biosensing was introduced to regulate the interac-
In [47], conventional plasmonic nanoantennas and sensors tion of a target molecule with the excited localized surface
used biofunctionalized metallic gratings that have a frequency plasmon resonance at the location of a plasmonic nanoparticle.
response in transmission as well as reflect changes in response It was prepared to separate a sample of three DNA origami
to the presence of particular biomarkers. This approach pro- structures on the surface and incubated with a 100 nm optical
vides comprehending the activity, biomechanical properties, nanoantenna made of composite material based on gold under
and state of health all of which directly impact the behavior optimal formation conditions to control the distance of its sur-
of cardiomyocytes. It used the concept of plasmonic sens- face to a molecule in the hotspot of optical antenna structures
ing nanoantennas to enable integrated nanoscale communica- for fluorescence enhancement.
tion and detection. This method involves a two-dimensional
structure and is based on the superior electrical properties of In [52], plasmonic sensing nanoantenna-based combined
graphene as a popular material for antenna applications. This nanoscale communication and biosensing systems were pre-
material has outstanding surface plasmon tunability, durable sented. This approach includes sensing nano nodes that can
confinement, and minimal losses, making it one of the most connect amongst one another for intra-body networks and
materials suitable for Terahertz operations. from one nano node to a wearable device. It was attempted
to accurate diagnoses and less strain on the infrastructure for
In [48], information about disease diagnosis, drug screen- medical tests.
ing, and tissue engineering for heart-related investigations
was given using an optical nano-antenna array and a piezo- In [53], a silicon-doped material with high excess carrier con-
photonic sensor. In this work, an aligned array of InGaN/GaN centrations was proposed for the dipole nanoantenna. High-
nanopillars was designed and created. A force mapping tech- index dielectric nanoantennas are superior to plasmonic ones
nique based on a nano-antenna array was developed with the in several ways, including CMOS compatibility and minimal
support of the piezo-phototronic effect. For force mapping, ohmic losses, which may be useful for nanophotonic applica-
a spatial resolution of 800 nm and a temporal resolution of tions. Both the augmented localized field and the wavelength
333ms has been established. By determining the antennas’ of the enhancement peak are influenced by the substance in
placements and measuring the light intensities of the piezo- the vicinity. The proposed dipole nanoantenna uses silicon
phototronic optical nano-antenna array, it was possible to material with high carrier concentrations for sensing and bio-
directly derive the dynamic mapping of the cell force of live logical applications in the mid-IR spectral region.
cardiomyocytes.
In [54], the design and analysis of a nano patch circular
In [49], an instrument topology of 15nm-gap plasmonic dimer antenna made of the gold patch and operated at terahertz
arrays nanoantenna, and selective amplification for glucose frequency band were presented. The suggested antenna was
sensing was demonstrated. It enhanced near-infrared and non- simulated at 3.93 THz and the result of this method can be
invasive glucose detection using plasmonic nano-antennas. used for a wireless body area network (WBAN) communi-
The results displayed that at wavelengths of 880 nm, systems cation system and deal with the human body via gathering
with 180 nm dimer optical nanoantennas arrays can establish patient health information.
linear relationships between photocurrent and glucose concen-
trations. In [55], an architecture for creating plasmonic bio-sensors
in which sense was accomplished using optical beam steer-
In [50], a graphene-based monopole nanoantenna was em- ing. The proposed trapping technique structure consisted of a
ployed at terahertz frequency bands (THz) for healthcare ap- network of optical bowtie nanoantennas that was used to pre-
plications. The proposed antenna was made of a graphene ring cisely control and manage items in mesoscopic systems with
placed on the SiO2 substrate. This antenna’s design makes length scales ranging from tens of nanometers to hundreds of
use of graphene to change the radiation pattern and bandwidth nanometers scale. The construction of the proposed antenna
without changing the operating frequency. The performance is based on a silicon (Si) - dielectric constructed with two
of the antenna was evaluated at an operating frequency equal tip-to-tip triangle semiconductor elements. The trapping of
to (1.65 THz). Its applications done with a compact footprint a virus sample species with 100 nm in diameter is suggested
and required performance were produced by the proposed to use in classical medicine. for this purpose. the analytical