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Writing Samples
Band 4

Blood Hemoglobin Concentration Sensing by Optical Nano Biosensor-based Plasmonic Metasurface: A Feasibility Study

#blood #hemoglobin #concentration #nano #plasmonic #metasurface #feasibility #study
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Abstract— Erratic
in
Change preposition
apply
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Use synonyms
concentration
Add an article
the concentration
a concentration
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 of
the
Correct article usage
apply
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blood
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hemoglobin
Change the spelling
haemoglobin
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 (
Hb
Use synonyms
) is
pernicious
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a pernicious
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 and common disease in many humans
of
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apply
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all over the world. The establishment of
Hb
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 measurement led to finding bio-optics mechanisms for tunable and high sensitivity dual-band plasmonic
metasurface
Use synonyms
 (PM) configuration that studied for
Hb
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concentration
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 detection of
blood
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 and formed by a semiconductor integrated with metal and dielectric layers.
However
Linking Words
, finding the mechanisms are particularly used without surgery
Linking Words
that
Correct pronoun usage
apply
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is a safe
method
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 with several
potentials
Fix the agreement mistake
potential
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 in biomedical applications. In
this
Linking Words
 paper, a biosensor based on surface plasmon resonances (SPRs)
that is
Linking Words
 a label-free detection
method
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, is proposed to measure
Use synonyms
Hb
Correct article usage
the Hb
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concentration
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 of
blood
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. The presented sensing
method
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 has the susceptibility to be a dual-bands
metasurface
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 perfect absorber at room temperature
for
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to
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adjust
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adjusting
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 the optical properties of the integrated semiconductor plasmonic structure. The
modeling
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modelling
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 and numerical performance have been fulfilled based on the finite element
method
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 (FEM) using
an
Correct article usage
apply
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electromagnetic field simulation software (CST).
Also
Linking Words
, to validate the numerical results, the transfer matrix
method
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 (TMM) was introduced as an analytical model. The analytical and numerical results show a good agreement
between
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apply
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together. Results indicate maximum sensitivity,
figure
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the figure
a figure
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 of merit (FoM), and quality factor (Q) as 315 nm
/
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RIU, 398.8, and 1407.6, respectively. By controlling and harnessing
of
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apply
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the light-matter interaction in
near-infrared
Correct article usage
the near-infrared
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 (NIR) region, we obtained the giant electric field intensity enhancement (EFIE) as 5000 and the maximum absorption close to 1 in the
first
Linking Words
 resonance peak of λ1=1.126 µm, which is the best track of optical operation in NIR regime. By adding samples to the biosensor, different
hemoglobin
Change the spelling
haemoglobin
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 concentrations of 0 g
/
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L to 260 g
/
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L have been detected from 1.11 µm to 1.17 µm.
Furthermore
Linking Words
, the proposed optical
metasurface
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 design can be utilized as a biosensor to measure the different content of
Hb
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concentration
Use synonyms
 in whole
blood
Use synonyms
 on a g
/
Use synonyms
L scale, which makes it one of the best candidates
of
Change preposition
for
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the
Correct article usage
apply
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future optical biosensors for biomedical applications. Index Terms— Finite-difference time-domain (FDTD), magnetic field intensity enhancement (MFIE), plasmonic
metasurface
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, refractive index, transfer matrix
method
Use synonyms
 (TMM).
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Include an introduction and conclusion

A conclusion is essential for IELTS writing task 2. It is more important than most people realise. You will be penalised for missing a conclusion in your IELTS essay.

The easiest paragraph to write in an essay is the conclusion paragraph. This is because the paragraph mostly contains information that has already been presented in the essay – it is just the repetition of some information written in the introduction paragraph and supporting paragraphs.

The conclusion paragraph only has 3 sentences:

  • Summary
  • Restatement of thesis
  • Prediction or recommendation

Example:

To summarize, a robotic teacher does not have the necessary disciple to properly give instructions to students and actually works to retard the ability of a student to comprehend new lessons. Therefore, it is clear that the idea of running a classroom completely by a machine cannot be supported. After thorough analysis on this subject, it is predicted that the adverse effects of the debate over technology-driven teaching will always be greater than the positive effects, and because of this, classroom teachers will never be substituted for technology.

Start your conclusion with a linking phrase. Here are some examples:

  • In conclusion
  • To conclude
  • To summarize
  • Finally
  • In a nutshell
  • In general

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