EEE3037: Nanoscience and Nanotechnology Assessment

Instructions

1. Attempt both questions.

   • Question 1: Explore the properties of quantum wavefunctions in nanostructures (100%).

   • Question 2: Explore the applications of nanomaterials of your choice (100%).

   • Assignment mark = average of Q1 and Q2.

2. Weight: 20% of module marks.

   • Submit via SurreyLearn Assignment Folder by 4 pm, Tuesday 6th November 2025.

3. Individual Submission:

   • Answers must be typed.

   • Save as a single PDF file.

   • Do not include your name or URN (anonymous marking).

4. File Format:

   • PDF only, single file.

   • Only the latest submission retained; double-check correct file.

5. Formatting: Include page numbers on each page.

6. References:

   • Cite in IEEE format: IEEE Reference Guide.

   • Use reference software (Endnote, Mendeley, RefWorks) instead of Word’s built-in system.

7. Units: Use appropriate SI units where relevant.

Quantum Well Design

Task: Design a single rectangular quantum well (QW) such that the fundamental interband transition (e1–hh1) at 300 K corresponds to λ ≈ 1.30–1.55 µm.

Wavelength Lookup (URN Last Digit):

URN Last Digit 0,1,2 3 4 5,6 7 8 9 Wavelength (nm) 1250 1300 1350 1450 1500 1550

Hint: Telecom-band QWs often use InGaAs(P)/InP or InGaAs/AlInAs on InP.

Requirements

1. Material Selection:

   • Pick two candidate material systems (e.g., InyGa1-yAs/InP, InxGa1-xAs/AlxIn1-xAs).

   • Quote parameters in a table: bandgaps, effective masses, band offsets, lattice constants, mismatch.

   • Source peer-reviewed journals (IEEE references).

2. Well Width and Barrier Composition:

   • Determine values to satisfy wavelength requirement.

   • Show all assumptions, formulas, units, and calculations.

3. Comparison of Candidates:

   • Lattice match/strain & critical thickness

   • Offset depth & number of bound states

   • Monolayer thickness sensitivity

   • Interface roughness impact on linewidth

   • Growth feasibility (MBE/MOCVD)

   • Use MoSCoW prioritization to select final candidate.

4. Finite Well Analysis:

   • Consider two sections of the well (~2 nm each).

   • Discuss effective mass, barrier penetration, and comparison to infinite barrier model.

Marking (100%):

• Understanding & constraints: 16%

• Independent literature use: 24%

• Technical mastery & engineering judgment: 50%

• Presentation, figures, IEEE references: 10%

General Notes:

• Temperature = 300 K

• Include units, show working, IEEE references

Applications of Nanomaterials

Task: Explore a single nanomaterial based on URN last digit and focus on one specific application.

Nanomaterial Lookup:

URN Last Digit 0,1 2,3 4,5 6,7 8,9 Nanomaterial Graphene/Graphene Oxide Carbon Nanotubes Transition Metal Dichalcogenides MXenes Perovskite Nanocrystals/Quantum Dots

Requirements

1. Application & Properties:

   • Clearly state the specific application.

   • Identify intrinsic properties (electrical, mechanical, thermal) used.

   • Compare to competitor materials quantitatively, with IEEE references.

2. Benefit Analysis:

   • Discuss added benefit of nanomaterial.

   • Compare theoretical promise vs practical performance (figures of merit).

   • Assess if gains are unique to chosen nanomaterial.

3. Scientific/Engineering Origin:

   • Explain why improvement occurs using physics/engineering principles.

   • Include schematics where appropriate.

Guidelines & Marking:

• Total word count: ~1000 words (+/-10%)

• Include total word count

• Marking criteria:

  1. Clear application statement: 5%

  2. Added benefit discussion: 40%

  3. Scientific/engineering origin: 40%

  4. Presentation & references: 15%

Brief Summary of Assessment Requirements

The EEE3037 assignment requires students to attempt both questions, each contributing 100% individually, with the final mark being the average of the two. The assignment carries 20% of the module marks and must be submitted as a typed, single PDF file via SurreyLearn by the due date, ensuring anonymity by excluding name or URN.

Key Pointers to be Covered

Question 1 – Quantum Well Design

• Design a single rectangular quantum well (QW) targeting a specific wavelength (λ ≈ 1.30–1.55 µm at 300 K) based on the URN last digit.

• Material selection: Two candidate material systems (e.g., InGaAs/InP, InGaAs/AlInAs). Include a table with:

  • Bandgaps, effective masses, band offsets, lattice constants, mismatch

  • Sources must be peer-reviewed (IEEE references)

• Well width and barrier composition: Calculations to achieve the desired wavelength; include assumptions, formulas, units, and stepwise derivation.

• Comparison of candidates:

  • Lattice match/strain and critical thickness

  • Offset depth & bound states

  • Monolayer sensitivity and interface roughness impact

  • Growth feasibility (MBE/MOCVD)

  • Prioritize using MoSCoW method to select final candidate

• Finite well analysis: Consider two ~2 nm sections, discuss effective mass, barrier penetration, and compare to infinite barrier model

Question 2 – Applications of Nanomaterials

• Explore a single nanomaterial based on URN last digit with a specific application.

• Application & properties: Identify which intrinsic properties are exploited (electrical, mechanical, thermal), and compare with competitors quantitatively.

• Benefit analysis: Highlight the advantages, compare practical performance vs theoretical promise, and determine if gains are unique.

• Scientific/engineering origin: Explain the underlying physics/engineering mechanisms; include schematics as necessary.

• Presentation: Word count ~1000 words (+/-10%), IEEE referencing, tables, figures

Approach Taken by Academic Mentor

The Academic mentor guided the student step by step, ensuring clarity and systematic coverage of each requirement:

Step 1 – Understanding the Problem

• Explained the QW design problem: selecting materials to target telecom-band wavelengths.

• Reviewed nanomaterials options and applications based on URN last digit.

• Emphasized the importance of IEEE-referenced, peer-reviewed sources.

Step 2 – Material Selection (Question 1)

• Mentor instructed the student to research two candidate materials, gather all parameters (bandgap, effective mass, lattice constants, offsets).

• Demonstrated how to create comparison tables for clarity and analysis.

Step 3 – Calculations & Design

• Guided the student to calculate well widths and barrier compositions using finite-well formulas.

• Ensured all units were shown, assumptions stated, and derivations stepwise.

Step 4 – Candidate Comparison

• Used MoSCoW prioritization to evaluate lattice match, critical thickness, interface effects, and growth feasibility.

• Assisted student in identifying the final material candidate.

Step 5 – Finite Well Analysis

• Explained dividing the well into 2 nm sections and analyzing effective mass and barrier penetration.

• Compared results with the infinite barrier approximation to highlight differences.

Step 6 – Nanomaterial Application (Question 2)

• Guided the student to choose a single nanomaterial and specific application.

• Discussed intrinsic properties and comparison with competitors.

• Mentored in explaining quantitative benefits, figures of merit, and the underlying physics/engineering principles.

• Advised on inclusion of schematics, labeled figures, and clear captions.

Step 7 – Drafting & Presentation

• Ensured word count compliance, proper IEEE citations, and professional presentation.

• Reviewed formatting, page numbering, and PDF submission requirements.

Outcome Achieved

• Student submitted a well-structured PDF covering both questions fully.

• Question 1:

  • Two materials evaluated; one selected based on MoSCoW prioritization.

  • Finite well calculations accurately demonstrated target wavelength.

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