无法在参考文献 latex/BibLatex 中显示波浪符号 (~)

Question

我有一个类似这样的 URL 链接

http://www.abc.de/~doo/bar/foobar.htm

如您所见，它包含一个~。我尝试将链接更改为

http://www.abc.de/\~doo/bar/foobar.htm

但是，~超过了d，类似于ñ。我怎样才能正确显示波浪号？

这是文件条目

@webpage{rajapakse2008,
    Author = {Rajapakse, Damith C.},
    Date-Added = {2018-01-25 14:31:33 +0000},
    Date-Modified = {2018-05-03 21:05:13 +0000},
    Lastchecked = {25.01.2018},
    Month = {04},
    Title = {Fragmentation of Mobile Applications},
    Url = {http://www.comp.nus.edu.sg/\~damithch/df/device-fragmentation.htm},
    Year = {2008},
    Bdsk-Url-1 = {http://www.comp.nus.edu.sg/~damithch/df/device-fragmentation.htm}}