Zhuangdi Zhu

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We report in this communication the two-photon absorption (TPA)-induced room-temperature lasing performance of ZnO nanowires. Under femtosecond pulse-excitation at λ = 700 nm in the infrared regime, a remarkably low threshold of 160µJ/cm 2 was observed for the TPA-induced lasing action, which is of the same order of magnitude as that measured for the linear(More)
By tracking changes in electromagnetic radiation footprint emitted from computers using a magnetometer on commodity mobile devices, a malicious attacker can easily learn the secrets of the computer's owner without physically peeping at or hacking into the victim's system. Targeting at Applications and Web browsers, we present MagAttack, which uses the(More)
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