The Kavli Nanoscience Institute established the KNI Laboratory Resident Expert program in Fall 2019. Designed to leverage the breadth of knowledge from its exceptional lab members, the Resident Expert (RE) program recognizes top users in five critical areas of the KNI Laboratory: Lithography, Microscopy, Deposition, Etching, and Wet Chemistry/Optical Photolithograpy.
Over a six-month period, Resident Experts work alongside technical staff to identify and create useful educational resources that will benefit current and future lab members of the KNI. These resources, e.g. process recipes and procedures, will be compiled into libraries of standardized materials to help minimize exhaustive duplicative efforts across the Lab. Moreover, REs are given a unique platform to contribute thoughtful ideas as to how the KNI Laboratory can evolve to better serve its community.
The current cohort of the Kavli Nanoscience Institute Laboratory Resident Experts is introduced below.
Lucia De Rose
Lucia De Rose is the current KNI Lab Resident Expert in Microscopy. Lucia is a graduate student researcher in Professor Axel Scherer's lab where she is investigating nanoscale vacuum field emission devices for harsh environments and optically gated nanoscale vacuum field emission transistors.
Weiting Deng is the current KNI Lab Resident Expert in Wet Chemistry/Optical Lithography. Weiting is a graduate student researcher in the department of Medical Engineering in Professor Julia Greer's lab.
Maggie Potter is the current KNI Lab Resident Expert in Deposition. Maggie is a visiting student researcher in Professor Harry Atwater's lab in the department of Applied Physics and Materials Science. Her home institution is the University of Illinois at Urbana Champaign where she is a graduate student in Chemical and Biomolecular Engineering in Professor Ralph Nuzzo's group.
At Caltech, Maggie is part of a team that aims to design and build a prototype power-generating window. Energy-harvesting for direct and diffuse sunlight is accomplished through a luminescent solar concentrator (LSC) with micro-scale photovoltaic (PV) components embedded in a planar grid array. Specifically, she contributes to the design and fabrication of the Si-based PV component to optimize solar cell open circuit voltage (Voc) and visual obscurity.
Maggie joined the KNI Lab in January 2019. Since her work applies microelectronic fabrication principles to PV materials, she has experience with micron-scale photolithography using thick photoresists; wet and dry plasma etching of ITO and silicon; deposition of surface passivation, anti-reflective coating materials, and conductive interconnects; and characterization with SEM and ellipsometry. Given the small dimensions of their PV materials, Maggie is also versed in substrate/sample preparation for handling extremely fragile suspended micro-scale arrays and testing micro-scale devices.
Sameer Sonar is the current KNI Lab Resident Expert in Plasma-Etch. Sameer is a graduate student researcher in Professor Oskar Painter's lab in the Department of Applied Physics.
Steven Wood is the current KNI Lab Resident Expert in Lithography. Steven is a second-year graduate student in Professor Oskar Painter’s group in the department of Applied Physics. His research interests lie broadly in the area of hybrid quantum devices. He is working on combining superconducting circuits with opto-mechanical crystals to create a high efficiency quantum transducer. The goal is to create a device that would convert microwave signals from superconducting qubits into optical photons that could then be used to transmit quantum information over long distances.
Steven started his KNI lab membership as a summer undergraduate research fellow before beginning his PhD at Caltech. During his first summer he worked on developing helium ion lithography using the Orion Nanofab GFIS microscope. Since his first summer Steven has used a variety of tools in the KNI and gained special expertise in electron beam lithography. During the fabrication of his devices, he uses the EBPG to write small features and execute multiple beam writes that are aligned within ~50 nm of each other. As a result, he is interested in optimizing the fracturing of small curved features as well as optimizing alignment and minimizing drift on the EBPGs. As part of this program, he hopes to share any tips and tricks he’s learned with the KNI community.
Former KNI Laboratory Resident Experts
Dvin Adalian (Wet Chemistry/Optical Lithography)
Jash Banker (Lithography)
Wen-Hui Sophia Cheng (Deposition)
Jake Rochman (Plasma-Etch)
Changhao Xu (Microscopy)