Publication

Novel printing geometries for tomographic volumetric additive manufacturing

2025

Abstract

In this talk we present improvements and novel printing results obtained with our differentiable ray optical framework (called Dr. TVAM) for Tomographic Volumetric Additive Manufacturing (TVAM). In TVAM different 2D patterns are illuminated on a rotating vial containing a photosensitive resin. Dr. TVAM produces patterns which outperform printing results in scattering media by simulating the ray optical propagation physically. Also, for the first time we print in a square vial without index matching bath. And for striation mitigation we print in a tilted TVAM geometry where the light illumination is not perpendicular to the rotation axis.

Official source

https://infoscience.epfl.ch/entities/publication/efa52f49-c677-4f1b-9b86-0b1d6223dc19

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/efa52f49-c677-4f1b-9b86-0b1d6223dc19

About this result

Related concepts (31)

Rotation

Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersecting anywhere inside or outside the figure at a center of rotation. A solid figure has an infinite number of possible axes and angles of rotation, including chaotic rotation (between arbitrary orientations), in contrast to rotation around a axis.

Rotation around a fixed axis

Rotation around a fixed axis or axial rotation is a special case of rotational motion around a axis of rotation fixed, stationary, or static in three-dimensional space. This type of motion excludes the possibility of the instantaneous axis of rotation changing its orientation and cannot describe such phenomena as wobbling or precession. According to Euler's rotation theorem, simultaneous rotation along a number of stationary axes at the same time is impossible; if two rotations are forced at the same time, a new axis of rotation will result.

Rotation formalisms in three dimensions

In geometry, various formalisms exist to express a rotation in three dimensions as a mathematical transformation. In physics, this concept is applied to classical mechanics where rotational (or angular) kinematics is the science of quantitative description of a purely rotational motion. The orientation of an object at a given instant is described with the same tools, as it is defined as an imaginary rotation from a reference placement in space, rather than an actually observed rotation from a previous placement in space.