<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">He Li</style></author><author><style face="normal" font="default" size="100%">Jinhuan Wang</style></author><author><style face="normal" font="default" size="100%">Gao, Song</style></author><author><style face="normal" font="default" size="100%">Chen, Qing</style></author><author><style face="normal" font="default" size="100%">Peng, Lian Mao</style></author><author><style face="normal" font="default" size="100%">Kaihui Liu</style></author><author><style face="normal" font="default" size="100%">Wei, Xianlong</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Superlubricity between MoS&lt;sub&gt;2 &lt;/sub&gt;Monolayers</style></title><secondary-title><style face="normal" font="default" size="100%">Advanced Materials</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2017</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://onlinelibrary.wiley.com/doi/10.1002/adma.201701474/abstract</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">29</style></volume><pages><style face="normal" font="default" size="100%">1701474 </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The ultralow friction between atomic layers of hexagonal MoS&lt;sub&gt;&lt;span style=&quot;font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt;, an important solid lubricant and additive of lubricating oil, is thought to be responsible for its excellent lubricating performances. However, the quantitative frictional properties between MoS&lt;sub&gt;&lt;span style=&quot;font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt; atomic layers have not been directly tested in experiments due to the lack of conventional tools to characterize the frictional properties between 2D atomic layers. Herein, a versatile method for studying the frictional properties between atomic-layered materials is developed by combining the in situ scanning electron microscope technique with a Si nanowire force sensor, and the friction tests on the sliding between atomic-layered materials down to monolayers are reported. The friction tests on the sliding between incommensurate MoS&lt;sub&gt;&lt;span style=&quot;font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt; monolayers give a friction coefficient of ≈10&lt;sup&gt;&lt;span style=&quot;font-size: small;&quot;&gt;−4&lt;/span&gt;&lt;/sup&gt; in the regime of superlubricity. The results provide the first direct experimental evidence for superlubricity between MoS&lt;sub&gt;&lt;span style=&quot;font-size: small;&quot;&gt;2&lt;/span&gt;&lt;/sub&gt; atomic layers and open a new route to investigate frictional properties of broad 2D materials.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">27</style></issue></record></records></xml>