We report an effective solvent engineering process to enable controlled perovskite crystal growth and a wider window for processing uniform and dense methyl ammonium lead iodide (MAPbI3) perovskite films. Planar heterojunction solar cells fabricated with this method demonstrate hysteresis-free performance with a power conversion efficiency around 10%. The crystal structure of an organic-based P...

Oscillators are an important component of radio frequency (RF) and digital devices. Today, product design engineers often do not find themselves designing oscillators because the oscillator circuitry is provided on the device. However, the circuitry is not complete. Selection of the crystal and external capacitors have been left to the product design engineer. If the incorrect crystal and exter...

The 365 000 crystal structures recorded so far in the Cambridge Structural Database (CSD) have already been used extensively in the study of intermolecular interactions and crystal packing, providing fundamental knowledge that can be applied in crystal engineering and crystal design. However, as the scientific problems posed to the CSD become more sophisticated, there is a need to develop more ...

Oscillators are an important component of radio frequency (RF) and digital devices. Today, product design engineers often do not find themselves designing oscillators because the oscillator circuitry is provided on the device. However, the circuitry is not complete. Selection of the crystal and external capacitors have been left to the product design engineer. If the incorrect crystal and exter...

ix 1 Workshop Introduction 1 1.1 Workshop Goal 1 1.2 Discussion 2 2 Invited Talk: The State of the Art in End-User Software Engineering 5 3 Extended Abstracts of Workshop Papers Published in ICSE Proceedings 9 3.1 End-User Software Engineering: A Distributed Cognition Perspective 9 3.2 Extending the Boundary of Spreadsheet Programming: Lessons Learned from Chinese Governmental Projects 19 3.3 E...

Two phenomena will be considered. Phase transformations (PTs) and chemical reactions (CRs) under compression and shear of materials in rotational diamond anvil cell (RDAC) represent examples of apparent effects of plastic shear. We recently predicted the new phenomenon that crystal-crystal and crystalamorphous PTs can occur through virtual melting (VM) significantly below (> 1000K!) the melting...

We present a solution-based crystal phase engineering approach for layered transition metal disulphide nanosheets by modulating the reactivity of molecular precursors.

Current United States Food and Drug Administration (FDA)-approved lithium salts are plagued with a narrow therapeutic window. Recent attempts to find alternative drugs have identified new chemical entities, but lithium's polypharmacological mechanisms for treating neuropsychiatric disorders are highly debated and are not yet matched. Thus, re-engineering current lithium solid forms in order to ...

photonic crystal cavities S. Kocaman, X. Yang, J. F. McMillan, M. B. Yu, D. L. Kwong, and C. W. Wong Optical Nanostructures Laboratory, Center for Integrated Science and Engineering, Solid-State Science and Engineering, and Mechanical Engineering, Columbia University, New York, New York 10027, USA Lawrence Berkeley National Laboratory, University of California at Berkeley, Berkeley, California ...