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美國洛斯阿拉莫斯國家實驗室的科學家們採用了一種新技術，可以觀察到原本很難在物體表面上看見的指紋。 這項技術將一束密集的X光對準留有指紋的物體表面，並根據掃描結果創建出計算機圖像。
傳統的方法是通過常規光線使指紋顯示出來，而且要藉助粉末等物質，這會改變指紋保存狀況。而該新方法使用了一種“微X射線束熒光技術”，可以探測到指紋攜帶的化學成分，卻不會改變指紋的保存狀態。
該實驗室的一位科學家瓦希德·馬吉德表示，對那些大實驗室來說，這是獲取用其他方法看不到的印跡的最好方法。
馬吉德說：“這項技術填補了一項空缺。如果沒有這項技術，某些印跡就會變得毫無意義。比如說，如果是深色表面上的指紋，普通技術確實無法精確地探測到它們;如果是青少年或小孩的`指紋，他們的指尖留下的化學成分(和成人)是不同的，而且這些指紋附着在物體表面的時間並不久，因此不適宜使用傳統的分析方法。”
豪夫裏洛說：“這是清晰顯示指紋的一種新途徑。我們查找印跡時不再只觀察手指分泌的油脂和殘留有機物，而是專注於其背後隱藏的特殊化學成分。”
該實驗室發明的這種新型指紋探測法的創新之處在於它包含了計算機軟件技術和機器操作方法。但是這一技術也並非衆人皆宜。豪夫裏洛笑着說：“我們已經收到了一些負面評論。一位批評者對我們說它壓根不實用。但我們工作的目標是證明這種技術是切實可行的。”
參考譯文：
Los Alamos National Laboratory scientists are using a new technique to see fingerprints on surfaces that typically make them invisible. The technology focuses a tight beam of X-rays on surfaces with fingerprints and creates a computer picture out of those scans.
The conventional methods are meant to bring out fingerprint patterns with regular light and they have to treat those with powder, which alters them. The new method uses a technology called mini-X-ray fluorescence to detect chemical elements in fingerprints without altering them.
For big labs, the method could be a great way to bring out prints that can’t be seen any other way, said Vahid Majidi, a lab scientist.
"The technique fills a unique niche," Majidi said. "These are prints that would otherwise be useless. If you have prints on a dark surface, for example, they really don’t develop well using normal techniques. If you have prints from an adolescent or child, the chemicals in the fingertips are different and don’t stick around long enough for traditional methods."
"This is a new approach to fingerprint visualization," Havrilla said. "We’re lifting prints, but instead of looking at the finger’s natural oils and organic residues we’re looking at elemental features left behind."
What’s new is the method the lab has created to see them which includes computer software and ways of manipulating the machinery, Worley said. But the technique isn’t for everyone.
"We’ve already had some negative comments on it," Havrilla said with a laugh. "One reviewer told us it’s just not practical. But the goal of our work was to demonstrate that it was feasible to see these things."
