郭鑫 1979年5月生，工学博士，副教授，9728太阳集团金属材料系教师。

教育、工作经历

1998年-2002年，攻读沈阳化工大学9728太阳集团复合材料专业学士学位；

2004年 -2007年，9728太阳集团材料学专业工学硕士学位；

2013年-至今，9728太阳集团先进材料及其制备技术博士在读；

2008年-至今，兰州理工大学9728太阳集团任教。

科学研究

◆从事金属材料的研究，主持甘肃省自然科学基金(1212 RJYA004)：稀土（Eu、Yb）掺

杂β-Si₃N₄电子结构和光学性能的第一性原理研究。本项目利用第一性原理研究了Eu和Yb掺杂β-Si₃N₄的电子结构和光学性能，随掺杂浓度的提高，能带密度逐渐增加，带隙逐渐减少，接近半导体带隙特征；随着掺杂浓度的提高，Eu和Yb成键的共价性逐渐降低，离子性逐渐升高，并通过布居值得到验证；掺杂体系在低能区的介电常数和损耗较小，其作为电介质材料在光电器件应用中可体现较长的使用寿命，表明其作为光学元件具有潜在的应用前景。

发表论文

[1] Xin Guo*, Peiqing La, Xuefeng Lu, Yupeng Wei, Xueli Nan and Ling He. Theoretical research of electronic structures and optical properties of β-Si2[Si(1-x)Ybx](x=1/4, 1/2 and 3/4) based on the first-principles calculations[J]. Nanoscience and nanotechnology letters, 2013, 5:1237-1244. (SCI, IF=1.444)

[2] Xuefeng Lu, Xin Guo*, Peiqing La, Yupeng Wei, Xueli Nan and Ling He. Insight into the nanomechanical properties under indentation of β-Si3N4 nano-thin layers in the basal plane using molecular dynamics simulation. Physical Chemistry Chemical Physics, 2014, 16:18858-18865. (SCI, IF=4.196)

[3] Peiqing La, Xin Guo, Xuefeng Lu, Dan Zhang, Hongding Wang, and Yupeng Wei. Numerical Calculations on thermodynamic parameters in solidification and average grain sizes of bulk nanocrystalline Fe3Al based alloys prepared by aluminothermic reaction casting [J]. Nanoscience and Nanotechnology Letters, 2013, (SCI, IF=1.444)

[4] Xuefeng Lu, Peiqing La, Xin Guo, Yupeng Wei, Xueli Nan, and Ling He. Investigation of nanomechanical properties of β-Si3N4 thin layers in a prismatic plane under tension: A molecular dynamics study [J]. The Journal of Physical Chemistry Letters, 2013, 4, 1878-1881. (SCI, IF=6.687)

[5] Xuefeng Lu, Peiqing La, Xin Guo, Yupeng Wei, Xueli Nan, and Ling He. Research of electronic structures and optical properties of Na- and Mg-doped β-Si3N4 based on the first-principles calculations [J]. Computational Materials Science, 2013, 79: 174-181. (SCI, IF=1.879)

[6] Xuefeng Lu, Peiqing La, Xin Guo, Yupeng Wei, Xueli Nan and Ling He. Electronic structures and optical properties of 2Al- and 2Ca-doped β-Si3N4: A first-principles study [J]. International Journal of Modern Physics B, 2013, 27(4): 1250212. (SCI, IF=0.455)

[7] Xuefeng Lu, Peiqing La, Yupeng Wei, Xin Guo and Xueli Nan. Observation of atom population, electronic structures and optical properties of β-Si2[Si(1-x)Alx]N4(x=0, 1/4, 1/2 and 3/4) based on the first-principles calculations [J]. Nanoscience and Nanotechnology Letters, 2012, 4: 1160-1165. (SCI, IF=1.444)

[8] Peiqing La, Xin Guo, Yang Yang, Chunjie Cheng, Xuefeng Lu and Yupeng Wei. Effects of annealing on microstructure and mechanical properties of bulk nanocrystalline Fe3Al based alloy with 10wt. % Mn prepared by aluminothermic reaction[J]. Advanced Materials Research, 2011, 236-238: 1939-1944. EI

[9] Xuefeng Lu, Peiqing La, Xin Guo and Yupeng Wei. Synthesis and properties of epoxy resin/graphite composites via in situ polymerization [J]. Advance Materials Research, 2012, 415-417:358-361. EI：20115214644579

[10] Xuefeng Lu, Peiqing La, Xin Guo and Yupeng Wei. Study on microstructure and mechanical properties of epoxy resin/carbon black composites prepared by in situ polymerization [J]. Applied Mechanics and Materials, 2012, 109: 156-160. EI: 20114714547836