US 12,472,686 B2
Method and apparatus for volumetric additive manufacturing of cell-loaded resins
Paul Delrot, Morges (CH); Damien Loterie, Ecublens (CH); and Christophe Moser, Lausanne (CH)
Assigned to ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE, Lausanne (CH)
Appl. No. 17/632,476
Filed by ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE, Lausanne (CH)
PCT Filed Jul. 7, 2020, PCT No. PCT/EP2020/069099
§ 371(c)(1), (2) Date Feb. 2, 2022,
PCT Pub. No. WO2021/023452, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 19190258 (EP), filed on Aug. 6, 2019.
Prior Publication US 2022/0274326 A1, Sep. 1, 2022
Int. Cl. B29C 64/165 (2017.01); B29C 64/291 (2017.01); B29C 64/314 (2017.01); B33Y 10/00 (2015.01); B33Y 40/10 (2020.01); B33Y 70/10 (2020.01); B29K 105/16 (2006.01)
CPC B29C 64/165 (2017.08) [B29C 64/291 (2017.08); B29C 64/314 (2017.08); B33Y 10/00 (2014.12); B33Y 40/10 (2020.01); B33Y 70/10 (2020.01); B29K 2105/162 (2013.01); B29K 2995/0031 (2013.01); B29K 2995/0056 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of fabricating a three-dimensional article comprising the steps of:
providing, in a transparent container of an apparatus for tomographic additive manufacturing, a photoresponsive material, wherein said photoresponsive material contains scattering particles,
adjusting a refractive index of said photoresponsive material so as to match the refractive index of said scattering particles;
generating from a light source of said apparatus two-dimensional light-patterns based on computed tomographic projections of said three-dimensional article, and
projecting two-dimensional light-patterns into said photoresponsive material and defining a three-dimensional dose distribution, thereby creating a distribution of alterations in said photoresponsive material, and thereby creating said article.