“Acoustic holograms” quickly assemble objects from particles or cells

Scientists have created “acoustic holograms” that can assemble matter into 3D objects, using just sound. The technique works with various types of particles and even living cells, allowing for a new kind of 3D printing that’s fast and contact-free.Cont… Continue reading “Acoustic holograms” quickly assemble objects from particles or cells

Getting a Fly’s-Eye View with Microfabricated Lens Arrays

Scanning electron micrograph of a microfabricated lens array

Atomic force microscopy, laser ablation, and etching with a witches brew of toxic chemicals: sounds like [Zachary Tong] has been playing in the lab again, and this time he found …read more Continue reading Getting a Fly’s-Eye View with Microfabricated Lens Arrays

DIY Injection Molding Press

While 3D printing has now become easily accessible and cheap, there are still several use cases where you need the advantages offered by injection molding, even for small batch runs. Professional small-batch injection molding can be pretty expensive, and buying a manual machine can cost quite a bit. Of course, …read more

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3D Printing Paper — Sort Of

There are only a few truly ancient engineered materials, and among the oldest is paper. Traditionally, paper is flat and can be bent into shapes. However, paper can be molded into for example packing material or egg cartons. [XYZAidan]  has a process that can recycle paper into 3D cardboard-like objects. …read more

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