<div><div style="  ; ; ;; ">Dear all,</div><div style="  ; ; ;; "><br></div><div style="  ; ; ;; "><div>How can I apply a vertical force  to the atoms  to model an applied pressure using <span lang="EN-US" style="white-space: pre-wrap; font-family: Verdana, sans-serif;">Quantum Espresso 6.1. version</span><span lang="EN-US" style="font-family: monospace; white-space: pre-wrap;"><font face="courier, courier new, monospace" style="line-height: 23.8px;"> </font></span><span lang="EN-US" style="white-space: pre-wrap; font-family: Verdana, sans-serif;">on Linux</span>, the value of which was varied from 500 MPa to 5 GPa .</div><div><br></div><div>I find that the code '"ATOMIC_FORCES"may make it,but the <span style="white-space: pre-wrap;">Ha/a.u. units is not MPa or GPa.</span></div><div><span style="white-space: pre-wrap;"><br></span></div><div><span style="white-space: pre-wrap;">Any help would be appreciated.</span></div><div><br></div></div><div style="  ; ; ;; "><pre style="line-height: 23.8px; margin-top: 0px; margin-bottom: 0px;"><div style="font-family: Verdana; white-space: normal;"><div>Thank you!</div><div>Best regards,</div></div><div style="font-family: Verdana; white-space: normal;"><br></div><div style="font-family: Verdana; white-space: normal;">------</div><div style="font-family: Verdana; white-space: normal;"><p class="MsoNormal" align="left" style="line-height: 17.85pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN-US">LU Hailin, Graduate Student</span><span lang="EN-US" style="font-family: Verdana, sans-serif;"><o:p></o:p></span></p><p class="MsoNormal" align="left" style="line-height: 17.85pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN-US">State Key Laboratory of Mechanical Transmission, Chongqing University</span><span lang="EN-US" style="font-family: Verdana, sans-serif;"><o:p></o:p></span></p><p class="MsoNormal" align="left" style="line-height: 17.85pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"></p><p class="MsoNormal" align="left" style="line-height: 17.85pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN-US">Chongqing 400044, China</span></p><p class="MsoNormal" align="left" style="line-height: 17.85pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN-US">Tel: (+86) 18362360286</span></p></div></pre></div></div>