Is your mom difficult to shop for? We’re here to help. From spa-like luxuries to stress-relieving tools, here are 46 gift ideas for products our editors have tested and loved this year.

Stainless steel plates with varied speed/power ✔️ Ultra-fine micro text (as small as 0.05mm!) ✔️ Anodized aluminum cards ✔️ Brass coins ✔️ Metal necklaces ✔️ A faux leather coffee coaster ✔️ A metal ...

Abstract: We propose and demonstrate a type of highly efficient tunable Mach-Zehnder interferometer (MZI) in Z-cut lithium niobate thin film (TFLN) based on the thermo-optical effect. By placing the ...