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Polytomies I

Description
A biology-inspired cardboard sculpture with mechanical joints, reacting to ambient sound through an embedded processor and LED lights.
Year
2016
Location
Frankfurt, Germany
Type
Installation
Keywords
Installation, Cardboard, Experimental, Lighting, Arduino

An internal node of a phylogenetic tree is described as a polytomy or multifurcation if (i) it is in a rooted tree and is linked to three or more child subtrees, or (ii) it is in an unrooted tree and is attached to four or more branches. A tree that contains any multifurcations can be described as a multifurcating tree.
(https://en.wikipedia.org/wiki/Polytomy)

In Polytomies I, a single form fractures into multiple emergent limbs — a sculptural echo of evolutionary uncertainty. The title borrows from biology, where a polytomy marks a moment in a phylogenetic tree when relationships between species cannot be fully resolved — a node of simultaneous divergence, or of unresolved data. Here, that ambiguity becomes tangible.

Rendered in vivid red and modular complexity, the work resists a single reading. Is it organic or synthetic? Frozen mid-evolution or perpetually branching? The form invites interpretation, embodying the tension between structure and flux, between the known and the indeterminate.

Like Ernst Haeckel’s visualizations of natural forms — where art met evolutionary thought — Polytomies I exists in a liminal zone: part science, part fiction, part architecture of the unknown. It is the first in a growing series of investigations into branching systems, multiplicity, and speculative biology.

The overall form was designed as a parametric three-dimensional model, initially developed as pure geometry without any subdivision for assembly. This base model was then unfolded into flat surfaces, with all necessary details added through a set of parametric algorithms to enable a glueless, mechanically interlocking construction.

The glueless assembly allows for complete disassembly, making it easy to maintain or replace the internal electronic components.

For the curved branching elements, a dovetail joint system was employed. This method relies on the elastic bending properties of the material, which hold the structure in tension. As the dovetailed edges are joined, the flat-cut panels naturally form the intended three-dimensional shape.

The material type, thickness, and scale of the dovetail joints were determined through a series of physical test models. For the final production, a 300 g/m² cardboard was chosen for its balance of strength, flexibility, and ease of fabrication. The components were precisely cut using a conventional cut plotter.

At the end of each branch, integrated lighting elements respond rhythmically to ambient sounds. These sounds are captured by a hidden microphone embedded in the middle of the sculpture — the “root.” All responses are processed in real time by a pre-programmed Arduino microcontroller, also discreetly embedded within the root structure.

In its synthesis of biology, design, and technology, Polytomies I is both method and metaphor. It shows how parametric thinking and material experimentation can converge with poetic intent — producing a form that is precise yet open-ended, resolved yet still asking questions.