Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 1, 00133, Rome, Italy.
Institute of Structure of Matter, Italian National Research Council (CNR-ISM), Via Salaria km 29.3, 00015, Monterotondo, RM, Italy.
Sci Rep. 2022 Mar 4;12(1):3571. doi: 10.1038/s41598-022-07021-w.
The tattoos removal has become an issue upon spread of the tattooing practice worldwide and hindsight regrets. Lasers are typically used for the purpose, though some colours such as green are considered "recalcitrant" to the treatment. In the current investigation, we aim at determining the efficacy of removal of a green ink water dispersion, using 5 laser treatments: Nd:YAG nano- and picosecond lasers in normal and array mode and Ruby nanosecond laser, keeping the total irradiated energy constant. The UV-Vis spectroscopy of the treated samples indicate that Nd:YAG picosecond laser is most effective, and the Ruby nanosecond laser is the least efficient. Fragment compounds generated from the pigment and siloxanes are common to all treatments, whereas hydrocarbon emerge by a larger amount upon Nd:YAG nanosecond treatment. Fibres are formed upon picosecond treatments and when operating in array mode, and lamellae are achieved by Ruby nanosecond laser treatment. Residual particles suspensions are very heterogeneous upon nanosecond treatments.
纹身的流行和事后的遗憾使得去除纹身成为一个问题。激光通常用于去除纹身，但有些颜色，如绿色，被认为对治疗有抵抗力。在目前的研究中，我们旨在确定使用 5 种激光治疗（Nd：YAG 纳秒和皮秒激光以及红宝石纳秒激光，保持总辐照能量不变）去除绿色油墨水分散体的效果。处理后样品的紫外可见光谱表明，Nd：YAG 皮秒激光最有效，红宝石纳秒激光效率最低。所有处理都会产生来自颜料和硅氧烷的碎片化合物，而纳秒 Nd：YAG 处理会产生更多的碳氢化合物。皮秒处理时会形成纤维，阵列模式下会形成薄片，红宝石纳秒激光处理会形成薄片。纳秒处理后残留颗粒的悬浮液非常不均匀。
