Researchers have invented a new way to align 3D semiconductor chips by shining a laser through concentric metalenses patterned on the chips to produce a hologram. Their work can help to lower the cost ...

In what could be a major telecommunications breakthrough, an engineer has developed a method for splicing together multicore optical fibers (MCFs) that could take the time consuming practice out of ...

[Left] Semiconductor layers are stacked using concentric metalenses as alignment marks. [Right] Light shines through these marks to project a hologram. The alignment or misalignment of the lenses ...