Projection Micro Stereolithography
Projection Micro Stereolithography - Related Videos
02:18
Fischer Projections
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2023
Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines. While...
09:24
Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics
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Cited by 31 •
2012
We demonstrate controlled pattern transformation of swelling gel tubes by elastic instability. A simple projection micro stereo-lithography setup is built using an off-the-shelf digital data projector to fabricate three-dimensional polymeric structures in a layer-by-layer fashion. Swelling hydrogel tubes under mechanical constraint display various circumferential buckling modes depending on dimension.
06:53
Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
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Cited by 30 •
2019
This manuscript describes the processing of single multifunctional ceramic components (e.g., combinations of dense-porous structures) additively manufactured by stereolithography.
02:06
Newman Projections
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2023
Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used representations is the dash-wedge formula. The dashed wedges, solid wedges, and the plane lines indicate the groups situated behind the plane, coming out of the plane, and in the plane, respectively. The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
01:29
Coordinates and Map Projections
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2025
Coordinates and map projections are essential tools in accurately representing the Earth's surface for various applications, ranging from navigation to spatial analysis. The latitude and longitude coordinate system is a universally recognized framework for defining locations. Latitude specifies the distance of a point north or south of the equator, measured in degrees from 0° at the equator to 90° at the poles. Longitude indicates a location's position east or west of the prime meridian,...
FAQs
Projection Micro Stereolithography relies on a spatially patterned light field rather than exposing the entire resin uniformly. A digital mask determines where ultraviolet or visible light reaches the liquid, so photopolymerization occurs only in selected regions. This spatial selectivity lets each layer reproduce a designed cross-sectional pattern and is central to building intricate microscale geometry.
Resolution depends on the interaction of four controllable elements: the projected optical pattern, exposure conditions, resin chemistry, and layer thickness. Together, these factors determine how precisely material hardens within each layer and how accurately successive layers build the intended form. Adjusting them provides a route to fine spatial resolution while preserving complex three-dimensional features.
Light does more than illuminate the resin: its propagation through the material governs where energy is delivered, while that transferred energy initiates the chemical hardening response. For this reason, Projection Micro Stereolithography connects optical physics with photochemistry. Studying the process can reveal how patterned light and resin response jointly determine the fabricated structure.
A digital image is projected onto the resin to define one layer, and the exposed regions harden through localized photopolymerization. The platform then shifts, allowing a fresh layer to be formed with a new projected pattern. Repeating this sequence constructs the complete three-dimensional microscale structure, with the final geometry determined by the succession of patterned exposures.
Its ability to produce complex microscale geometries supports work in microfluidics, biomedical devices, microrobotics, and metamaterials. These applications take advantage of patterned solidification and layer-by-layer construction to create three-dimensional forms at small scales. The method therefore serves both as a fabrication approach and as a way to investigate how geometry can be produced through controlled light exposure.
The fabrication process provides a practical system for examining light propagation, energy transfer, and the relationship between optical exposure and photochemical change. These physical processes influence where resin solidifies and therefore affect the geometry and spatial detail of the resulting microscale structures. Projection Micro Stereolithography links measurable optical conditions to the formation of complex three-dimensional materials.