摘要:
A method is provided for making a workpiece in an additive manufacturing process in which a starting material is solidified in a layer by layer fashion, with each layer of the workpiece being solidified using a patterned image of radiant energy configured as a two-dimensional grid array of pixels. The method includes: for each layer of the workpiece, determining a preferred angular orientation of the grid array, relative to the layer; and orienting the patterned image to the preferred angular orientation before solidifying the starting material for that layer.
摘要:
Using 3D printing, a microwell is formed by providing a plurality of masks, each mask representing a cross-section of a layer of the concave structure. Progressive movement of a projection plane exposes a pre-polymer solution to polymerizing radiation modulated by the masks to define the layers of the microwell, where each layer is exposed for a non-equal exposure period as determined by a non-linear factor. In a preferred embodiment, a first portion of the masks are base layer masks, which are exposed for a longer period than subsequent exposure periods. Shapes of the microwells, which may include circular, square, annular, or other geometric shapes, and their depths, are selected to promote aggregation behavior in the target cells, which may include tumor cells and stem cells.
摘要:
A system and method for 3D microfabrication projects light capable of initiating photopolymerization toward a spatial light modulator that modulates light responsive to digital masks corresponding to layers of the structure. Projection optics focus the modulated light onto an optical plane within a photopolymerizable material supported on a stage. A computer controller causes the spatial light modulator to project a sequence of images corresponding to the digital masks while coordinating movement of the stage to move a position of the optical plane within the photopolymerizable material to sequentially project each image of the sequence to generate the structure by progressively photopolymerizing the photopolymerizable material.
摘要:
An illumination system (30), comprising: – a plurality of light-emitting diodes (LEDs) (34), each LED having at least a first, light-emitting surface (36) and a second surface (37), at least one of the first and the second surface being substantially flat; – a plurality of electrical pathways (56), selectively connected to the respective LEDs, such that each LED can be individually controlled; and –a levelling surface (46, 52), wherein the levelling surface is substantially flat and in levelling contact with the at least one substantially flat surface (37, 36) of each LED, such that a two-dimensional array of LEDs extends in a plane parallel to the levelling surface.
摘要:
A system and method for layerwise production of a tangible object (5), the system comprising: a construction shape (6) to form a liquid layer to be brought in contact with the tangible object; solidifying means (9) for solidifying a predetermined area of a layer (10) of the liquid (3), so as to obtain a solid layer (14) of the tangible object (5), the solid layer thus having a predetermined shape; separating means (18; 19'; 19") for separating said solid layer from said construction shape; moving means (18) for moving, relative to one another, the construction shape (6) to a predetermined position relative to the tangible object (5), for carrying out a successive such method cycle for solidifying a predetermined area of a successive such liquid layer; the system is arranged to provide a limited volume of liquid adhered to the construction shape to form a liquid layer of limited height that does not contact the tangible object; wherein said moving of said construction shape and said solidifying of said predetermined area are carried out to take place simultaneously.
摘要:
Disclosed herein are anatomical simulators produced using three dimensional (3D) printing to produce interior components of the simulator. The method of producing void structures in an anatomical phantom, includes 3D printing one or more structures of one or more desired sub- anatomical features using a dissolvable material; supporting and enclosing the one or more structures in an interior of a mold of the anatomical phantom; filling a remaining internal volume in the interior of the mold between an outer surface of the one or more structures and an inner surface of the mold with a liquid precursor of a matrix material selected to mimic anatomical tissue and processing said liquid precursor to form a tissue mimic matrix material; and dissolving the one or more structures with a fluid selected to dissolve said dissolvable material to produce one or more internal cavities within the tissue mimic matrix material.
摘要:
Die Erfindung betrifft eine Stereolithografievorrichtung, umfassend: einen Behälter (40) zur Aufnahme eines flüssigen, durch Bestrahlung aushärtbaren Materials, eine Substratplatte (60), eine Aktuatoreinrichtung zur Erzeugung einer Relativbewegung zwischen dem Behälter und der Substratplatte (60), und eine Bestrahlungsvorrichtung (20) zur selektiven Bestrahlung des in dem Behälter angeordneten Materials. Erfindungsgemäss sind die Aktuatoreinrichtung und die Bestrahlungsvorrichtung (20) an einer Rahmenvorrichtung (10) befestigt und der Behälter und die Substratplatte (60) zu einer Baueinheit zusammengefasst und die Baueinheit aus Behälter und Substratplatte (60) ist gemeinsam in die Rahmenvorrichtung (10) eingesetzt, darin mittels einer Befestigungsvorrichtung lösbar befestigt ist und gemeinsam von der Rahmenvorrichtung (10) zu entfernen.
摘要:
본 발명은 광경화식 3D 성형방법 및 광경화식 3D 성형장치에 관한 것이다. 본 발명의 목적은 조형물을 성형하는 시간을 단축할 수 있는 광경화식 3D 성형방법 및 광경화식 3D 성형장치를 제공하는 것이다. 이를 위해, 본 발명에 따른 투명한 바닥판을 갖는 수지조 내에 수용된 광경화성 액체수지를 조형판에 층상으로 적층시켜 조형물을 성형하는 광경화식 3D 성형방법은 단위성형층을 위한 층이미지광을 조사하는 동안 상기 단위성형층의 적어도 일부의 두께 범위 내에서 상기 조형판을 상기 수지조 바닥판에 대해 상대적으로 상승시키며 조형한다.