We are hiring!

The ACTAlab (www.actalab.com/) at SUTD seeks applicants for a full-time postdoctoral position in theoretical materials science. The successful candidate will apply Density Functional Theory (DFT) methods to study structural phase transitions. In particular, the aim will be to understand, design, and optimise phase change materials for electrical memory applications. The position involves collaborating work with experimentalists who are also studying these phase transitions. The ideal candidate will have:

  • a PhD in Physics, Material Science, or a related field.
  • knowledge and experience using density functional theory codes.
  • a thorough understanding of condensed matter science.
  • high level of motivation.
  • a positive personality.
  • a good level of written and verbal English communication.
  • a proven publication record.
  • experience with VASP and good programming skills will be an advantage.
  • he/she should also be willing to work in collaboration with experimentalists.

Apply here: https://people.sutd.edu.sg/~robert_simpson/?page_id=700

Li Tian Chew completes Masters Degree Oral Defence

Congratulations to Li Tian Chew, who gave an excellent presentation and successfully defended her Master’s degree work on next generation memory technologies. The screenshot shows the moment that Li Tian was informed that she had passed. Under difficult circumstances amid the COVID19 outbreak, Li Tian had to present her work to the international thesis committee using video conferencing. Li Tian is among the pioneering batch of students on the SUTD-CGU Dual Masters Degree program in Nano Electronics Engineering and Design (NEED). She will be awarded two masters degree certificates (one from SUTD and one from Chang Gung University in Taiwan).

For more information about the NEED program and its scholarships, please see https://sutd.edu.sg/mneed

6 papers accepted for presentation at IPS 2018

ACTAlab will be presenting the following papers at the Institute of Physics Singapore (IPS) meeting in March 2018:
  • Jitendra Kumar Behera, Xilin Zhou, Alok Ranjan, Robert Edwardsimpson:Optimisation of phase change van der Waals structures by statistical design of experiments
  • Li Tian Chew, Li Lu, Robert Simpson:Interfacial Damage in Phase Change Materials Tuned Optical Structures
  • Li Lu, Ramon Paniagua-Dominguez, Vytautas Valuckas, Arseniy I. Kuznetsov, Robert E. Simpson:Novel chalcogenide as a material platform for tunable nanoantenna arrays in the visible and near infrared spectrum
  • Jose Martinez, Weiling Dong, Robert Simpson:Optical response of chalcogenide phase-change materials
  • Jing Ning, Robert Simpson, Yee Kan Koh:Electrical, optical and thermal properties of Sb2Te3 and related materials.
  • Rob Simpson, Jitendra Behera, Janne Kallika, Xilin Zhou, “Active electronic and photonic materials by nanostructural design”

3 papers to be presented at MRS

ACTAlab has had the following three papers accepted for presentation at the MRS Spring meeting April 2018:

  • Metal Diffusion into Ge2Sb2Te5 and Implications for Photonics
  • Electric Field Effects in Chalcogenides
  • Novel chalcogenide as a material platform for tunable nanoantenna arrays in the visible and near infrared spectrum

Xilin Zhou wins prestigious prize

Congratulations to ACTAlab postdoc, Dr Xilin Zhou, for winning the best poster award at the Materials Research Society Spring Meeting, which was held in Phoenix USA April 2017. Xilin’s poster discusses the atomic transitions involved in Sb2Te-GeTe superlattices. In particular Xilin showed through a combination of experiments and simulations that the activation energy for disordering of the GeTe layers decreases as more atoms switch, and this leads to an avalanche switching effect.

There were more than 1500 posters presented at the conference, and only 9 were honored with a Best Poster Award. The photograph below shows Xilin with the meeting chairs.

Xilin Zhou photographed with the MRS Meeting Chairs at the poster session.