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Synthesis and coating of multi‐metal oxides (MMOs) and alloys on conductive substrates are indispensable to electrochemical applications, yet demand multiple, resource‐intensive, and time‐consuming processes. Herein, an alternative approach to the synthesis and coating of alloys and MMOs by femtosecond laser direct writing (FsLDW) is reported. A solution‐based precursor ink is deposited and dried...
In recent years, additive manufacturing, also known as three-dimensional (3D) printing, has emerged as an environmentally friendly green manufacturing technology which brings great benefits, such as energy saving, less material consumption, and efficient production. These advantages are attributed to the successive material deposition at designated target areas by delivering the energy on it. In this...
We demonstrated various diffractive optical components based on a sub-micrometer graphene oxide (GO) film using a femtosecond (fs) laser direct writing method. The designated GO region exposed to the fs pulses is converted to reduced GO (rGO) with high optical absorbance via photoreduction. The GO/rGO pattern acts as a binary diffractive element.
We studied the thermal effect in the photoreduction process for the sub-micrometer thin graphene oxide (GO) films using femtosecond laser direct writing (FsLDW). For efficient photoreduction of GO films, various laser parameters, especially the repetition rate, were examined to identify the photothermal effect with different pulse-to-pulse spacing using a femtosecond laser having a 515-nm central...
The photoreduction of graphene oxide (GO) films using femtosecond laser direct writing (FsLDW) was investigated at the wavelengths of 343 nm and 515 nm to investigate the contributions of photochemical and photothermal effects in the photoreduction process.
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