Marcus McDermott Fiber · Fluid · Form
Materials Engineer / Fashion Designer

Working where fiber, fluid, and form become one material question.

I build at the seam between rheology and design — modeling how complex fluids climb a fiber by day, cutting a jacket pattern by night. Two trainings, one continuous curiosity about how matter behaves.

B.S. Fiber Science & Apparel Design M.Eng. Materials Science & Engineering
01 — SELECTED WORK

One body of work, three disciplines.

FLOW CURVE · η(γ̇) · THIX-3
Research · Computational
FIG.02

Capillary Wicking of Thixotropic Fluids

M.Eng. thesis (Corning-funded): a Bosanquet-type model with Cox–Voinov contact-line dynamics that predicts how a yield-stress, time-dependent fluid climbs a narrow gap — validated against microfluidic imaging across three gap heights.

2024–25Lead researcherPython · lmfit · confocalRead study ↘
PARAMETRIC BLOCK
Computational · Design
FIG.03

Computational Garment Design

Generative pattern-making with Prof. Fatma Baytar — translating body data into parametric blocks. Presented at ITAA 2025; manuscript in preparation.

ITAA 2025Co-authorRead study ↘
RE-ENTRANT LATTICE · ν<0
Research
FIG.04

Auxetic Metamaterials

Undergraduate thesis on negative-Poisson-ratio textile structures — geometry engineered so the material widens, rather than narrows, under tension.

Undergrad thesisLeadRead study ↘
FOREPART · 1:8 SCALE
Design
FIG.05

Bespoke Tailoring

Drafting, fitting, and constructing made-to-measure garments — material engineering applied at the scale of a single body. Industry work incl. Proenza Schouler & Mood Fabrics.

PracticeDesigner / MakerSee on Lifelikemark ↗
ELECTROSPUN FIBER · DROP CONTACT ANGLE
Research · Materials
FIG.06

Lignin Nanofibers & Hydrophobic Finishes

Sustainable fiber work with Prof. Margaret Frey (lignin nanofibers) and Prof. Ali Tehrani (IONCELL processing & hydrophobic textile finishes) — surface chemistry meeting fiber form.

2022–24ResearcherElectrospinning · wettabilityRead study ↘
02 — IN DEPTH

How one project reads.

PLATE II · THIX-3 WICKING ℓ [mm] √t h=127µm h=254µm h=508µm
M.Eng. Thesis · Corning

Capillary Wicking of Thixotropic Fluids

Classical Lucas–Washburn theory assumes a simple Newtonian fluid. Real coating fluids don't behave: their structure builds and breaks with shear, and they resist flow until a yield stress is exceeded. I built a model that keeps the physics honest.

Governing balance — Bosanquet form with dynamic contact angle

A Cox–Voinov correction lets the contact angle evolve with capillary number, with a single matching parameter Λ tying the macroscopic front to contact-line dissipation:

Cox–Voinov dynamic contact angle

The striking result: across all three gap heights, Λ ≈ 12 held constant — pointing to an effective matching scale rather than a molecular slip length.

MethodsRheometry · ODE/PDE solver
Imaging3i Marianas confocal
OutputTheory + experiment papers
03 — CAPABILITIES

What I can actually do.

A

Experimental

  • Rheology — Houska & thixotropic model characterization, stress-jump transients
  • Microfluidic wicking imaging & analysis
  • 3i Marianas spinning-disk confocal microscopy
  • Contact-angle / wettability & surface characterization
  • Electrospinning & fiber fabrication
B

Computational

  • Python — scientific stack, lmfit nonlinear fitting
  • ODE / PDE modeling & numerical solvers
  • Contact-line & capillary dynamics (Cox–Voinov)
  • Kinetic / structure-parameter model development
  • Parametric & generative design systems
C

Design

  • Bespoke tailoring — drafting, fitting, construction
  • Pattern-making & garment engineering
  • Computational / parametric garment design
  • Textile finishing & functional fiber treatment
  • Industry practice — Proenza Schouler, Mood Fabrics
04 — PUBLICATIONS

Writing & dissemination.

[1]

A theoretical framework for capillary wicking of yield-stress, thixotropic fluids

McD., M. et al.

Target: Journal of Non-Newtonian Fluid Mechanics

In preparation
[2]

Experimental validation of thixotropic wicking across confined gap geometries

McD., M. et al.

Target: Journal of Rheology

In preparation
[3]

Computational approaches to parametric garment design

McD., M. & Baytar, F.

ITAA Annual Conference, 2025 · manuscript in preparation

Presented 2025

Verified DOIs added on publication — no placeholder identifiers.

05 — ABOUT

The throughline.

A fiber under load, a fluid climbing a gap, and a seam taking the strain of a shoulder are, to me, the same question asked at different scales.

I trained twice at Cornell — first in Fiber Science & Apparel Design, then in Materials Science & Engineering — because I never accepted that the technical and the made had to be separate practices.

My research models the messy physics of real complex fluids; my design work puts material behavior under the hand at the scale of a single garment. The pleasure is the same in both: understanding how matter wants to move, then working with it rather than against it.

I'm currently completing a Corning-funded thesis on thixotropic capillary wicking, with publications in preparation, while weighing doctoral research and industry practice. I collaborate readily across groups and disciplines.

Download CV (PDF) ↓
06 — WORK WITH ME

Where I'm useful to others.

№ 01

Guest Lectures

Talks at the intersection of materials science and design — rheology for makers, design thinking for engineers, and everything in the seam between.

№ 02

Teaching

Workshops and instruction in fiber science, soft-matter intuition, pattern-making, and computational approaches to material design.

№ 03

Consulting

Materials & process consulting for textiles, coatings, and functional fibers — plus design-engineering bridge work for product teams.

Have a lecture, a course, or a hard material problem? Let's talk.

hello@marcusmcd.me →