Kinetic Architecture with 3DP & Shape Memory Alloys
MAS THESIS RESEARCH - RIGIDITY, FLEXIBILITY, AND ACTUATION • ETH Zurich, Switzerland
@ETH Zurich - Digital Building Technologies
This research develops an experimental framework enabling higher controllability of shape-morphing architectural behaviors through complex geometric grading and material-efficient thermal actuation. By pairing multi-material additive manufacturing with embedded Shape Memory Alloy (SMA) wires, the system creates self-actuating architectural components that eliminate bulky mechanical motors, hinges, and gear assemblies.
The investigation leverages tailored 3D-printed flexure mechanisms, bi-stable geometry profiles, and localized thermal excitation. Embedded SMA wires act as synthetic muscle fibers within motion-optimized flexible polymers, contracting upon Joule heating and resetting through elastic strain recovery.
The outcome scales from material and hinge-level testing to functional architectural demonstrators—including solar-responsive kinetic facade apertures, micro-zoning daylight modulators, and interactive scenographic lighting installations.
Research Overview & Thesis Film
MAS Thesis research at Digital Building Technologies (DBT) ETH Zurich and Empa investigating how Shape Memory Alloys (SMA) embedded in 3D-printed flexures can create compliant kinetic architectural mechanisms.
Kinetic Architecture with 3DP & Shape Memory Alloys - MAS Thesis Film
Why Kinetic architecture with 3D printing and SMA ?
Actuation Mechanics & System Architecture
The actuation system integrates thin nickel-titanium (Nitinol) SMA wires into motion-optimized 3D-printed polymers. Controlled electrical currents trigger the austenitic phase transformation, producing precise mechanical contraction.
Schematics of actuation system & SMA integration
3D printing tools, equipment (Raise3D Pro2, Prusa i3 MK3, Markforged), and material composites
Geometric Morphology & Progressive Testing
A systematic matrix of 3D-printed geometric configurations was developed to analyze range of motion, deflection angles, cycle repeatability, and energy efficiency under thermal actuation.
Testing actuated 3D printed geometries
Plethora of 3D printed geometries in progression
Catalog of 3D printed kinetic test specimens
Graded flexibility and cellular hinge morphology
Embedded SMA wire channel details
Experiment catalog - complex geometric topologies
Doubly curved bi-stable specimen
Actuated range of motion demonstration
Multi-material flexible joint prototype
Double curved surface morphing
Double curvature displacement under thermal excitation
Double curvature response characterization
Bi-stable snap-through mechanism testing
Complex geometric deformation study
Material interface and joint detailing
Multi-Element Actuation & Scenographic Prototyping
Synchronized multi-element arrays demonstrating coordinated kinematic transformation for architectural facades and dynamic scenographic light modulators.
Multiple element synchronized actuation system
Scenographic Prototyping & Dynamic Actuation
Responsive Architectural Scenarios
Real-world architectural applications: micro-zoning solar shading, daylight-responsive dynamic facades, and adaptive spatial light modulation.
Micro-zoning solar exposure control with embedded shading system
Solar exposure control with varying azimuth
3D printed experimental light control device
Large scale kinetic architecture installation demonstration