應(yīng)材料與化學(xué)學(xué)院程寒松教授和楊明副教授的邀請(qǐng),中國(guó)科學(xué)院院士張東輝教授來(lái)我校做學(xué)術(shù)報(bào)告。
報(bào)告題目:Accurate many body interaction energy surfaces for water(高精度水分子力場(chǎng)的構(gòu)建)
報(bào)告時(shí)間:2020年1月9日(周四)下午3:00
報(bào)告地點(diǎn):南望山學(xué)海樓109報(bào)告廳
Abstract
Computer simulations of water request an accurate representation of the underlying interaction potential energy surface (PES) for water molecules. Despite the fact that tremendous progress has been achieved since the first computer simulation of water was performed 50 years ago, the development of a molecular model that correctly reproduces the behavior of water from the gas to the condensed phase still represents a grand challenge to theoreticians. In the last decade, a number of accurate two-body and three-body interaction PES for water molecules have been successfully constructed using Permutationally Invariant Polynomials (PIP) and Behler-Parrinello Neural Network (BP-NN) fitting methods. In this talk, I will present some results from recent endeavor of our group on developing accurate PES for 2-body and 3-body interaction PES by using the Fundamental Invariant Neural Network (FI-NN). These new PESs are more accurate on fitting and substantially faster for evaluation than existing PIP and BP-NN PESs. Furthermore, the FI-NN approach is capable of producing high quality 4-body interaction PES for water. Simulation results for water clusters and bulk water based on these many body interaction surfaces will be discussed.
專家簡(jiǎn)介: 張東輝,物理化學(xué)家,中國(guó)科學(xué)院院士,中國(guó)科學(xué)院大連化學(xué)物理研究所研究員,分子反應(yīng)動(dòng)力學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室主任。1989年張東輝從復(fù)旦大學(xué)物理系畢業(yè),并前往美國(guó)紐約大學(xué)攻讀博士學(xué)位;1994年獲得紐約大學(xué)博士學(xué)位后到芝加哥大學(xué)做博士后研究;1997年應(yīng)聘到新加坡國(guó)立大學(xué)計(jì)算科學(xué)系任教;2000年升為副教授,同年獲得新加坡杰出青年科學(xué)家獎(jiǎng);2003年獲得新加坡國(guó)家科學(xué)獎(jiǎng);2004年被聘為中國(guó)科學(xué)院大連化學(xué)物理研究所研究員;2006年獲得國(guó)家杰出青年科學(xué)基金資助;2017年當(dāng)選中國(guó)科學(xué)院院士;2018年當(dāng)選政協(xié)遼寧省第十二屆委員會(huì)常務(wù)委員。
張東輝主要從事化學(xué)反應(yīng)動(dòng)力學(xué)理論研究,致力于發(fā)展有效的理論與計(jì)算新方法研究發(fā)生在氣相、團(tuán)簇、固體表面、以及生物分子中的原子分子運(yùn)動(dòng)、反應(yīng)、能量轉(zhuǎn)移等。
科學(xué)技術(shù)發(fā)展院
材料與化學(xué)學(xué)院
納米礦物材料及應(yīng)用教育部工程研究中心
2020/1/7