lukas rambold ✌️

hey, i’m a phd student at the hci group at hasso-plattner-institute in berlin, working on architecure-scale digital fabrication.

previously, I studied at lmu & cdtm and co-founded the government data-analytics startup polyteia.

mail · google scholar · instagram

Lukas Rambold, Robert Kovacs,Conrad Lempert, Muhammad Abdullah, Helena Lendowski, Lukas Fritzsche, Martin Taraz, and Patrick Baudisch

AirTied: Automatic Personal Fabrication of Truss Structures

We present AirTied, a device that fabricates truss structures in a fully automatic fashion. AirTied achieves this by unrolling a 20cm-wide inflatable plastic tube and tying nodes into it. AirTied creates nodes by holding onto a segment of tube, stacking additional tube segments on top of it, tying them up, and releasing the result. The resulting structures are material-efficient and light as well as sturdy, as we demonstrate by creating a 6m-tower. Unlike the prior art, AirTied requires no scaffolding and no building blocks, bringing automated truss construction into the reach of personal fabrication.

project page · video · full paper at UIST’23 · talk at UIST’23 · press:,

Robert Kovacs, Lukas Rambold, Lukas Fritzsche, Dominik Meier, Jotaro Shigeyama, Shohei Katakura, Ran Zhang, Patrick Baudisch

Trusscillator: System for Designing and Fabricating Dynamic Structures

Trusscillator is an end-to-end system that allows non-engineers to create human-scale human-powered devices that perform oscillatory movements, such as playground equipment, workout devices, and interactive kinetic installations.

video · full paper at UIST’21 · 🏅 best demo honorable mention

Thijs Roumen, Conrad Lempert, Ingo Apel, Erik Brendel, Markus Brand, Laurenz Seidel, Lukas Rambold, and Patrick Baudisch

Automatic Assembly of 2D SVG Plates to 3D Models

Laser cut models are commonly shared as 2D vector information (usually SVGs). This makes it hard to alter the underlying implicit 3D model. In this work we are introducing a tool that allows users to reconstruct the 3D model from vector plate data and therefore, thus making parametric changes possible.

project results were published as full papers at CHI’21 & UIST’21

Christian Tietz, Eric Klieme, Rachel Brabender, Teresa Lasarow, Lukas Rambold, Christoph Meinel

Under Pressure: Behavioral Authentication on Door Handles

Behavioral Authentication is wildly used in websites and smartphones. But how does it translate to other domains of all-day life? In this work, we equipped a door handle with resistive and capacitive touch sensors and found out in a study that we can authenticate a person pressing the handle with 88% accuracy by classifying the sensor data.

published at SECRYPT 2020 · 🏆 best poster award

Christian Mai, Lukas Rambold, Mohamed Khamis

TransparentHMD: Overcoming the Communication Barrier of HMDs

Many people report that when there is one person in the room who uses a VR headset, it tends to become a disconnecting experience for the others. In my bachelor thesis, I worked on improving collaboration between in-VR users and bystanders by displaying the in-VR user’s face on top of the HMD. Additionally, the system tracks the eyes of its observer to correct for the parallax error of the 2D display on the outside of the HMD.

published at MUM 2017 · discussion on HN · 🚀 shipped in Apple Vision Pro


comitee member: MuC 2024, CHI 2024 LBW

reviewer: Nature Communications (in 2023), TEI 2024, UIST 2024, CHI 2023, IEEE VR 2023, TEI Work in Progress (2023, 2022)

misc: co-organizing fab-lunch at CHI 2022, student volunteer at UIST 2020


lecturer: Algorithmic Folding master class at HPI with Abdullah Muhammad 2022, 2023

supervised interns and master theses (6 months fulltime): Horatio Hamkins 2023, Helena Lendowski 2023

supervised project seminar students (3 months, 1 day / week): Tarik A. 2021, Menatalla E. 2023