A5082347465- X-ray Diffraction in Crystallography
- Advanced Electron Microscopy Techniques and Applications
- Crystallization and Solubility Studies
- 2D Materials and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Perovskite Materials and Applications
- Nanocluster Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Materials Characterization Techniques
- Electron and X-Ray Spectroscopy Techniques
- Micro and Nano Robotics
- Advanced X-ray Imaging Techniques
- Crystallography and Radiation Phenomena
- Chemical Synthesis and Characterization
- Graphene research and applications
- Chalcogenide Semiconductor Thin Films
- Supercapacitor Materials and Fabrication
- Quantum Dots Synthesis And Properties
- Advanced Battery Materials and Technologies
- Nanopore and Nanochannel Transport Studies
- Advanced battery technologies research
- Molecular Sensors and Ion Detection
- Ionic liquids properties and applications
- Nanomaterials for catalytic reactions
- X-ray Spectroscopy and Fluorescence Analysis
Lawrence Berkeley National Laboratory
2018-2024
University of California, Berkeley
2018-2024
Kavli Energy NanoScience Institute
2022-2023
National Energy Research Scientific Computing Center
2022
University of California, Santa Cruz
2018-2019
Abstract Inorganic–organic hybrid materials represent a large share of newly reported structures, owing to their simple synthetic routes and customizable properties 1 . This proliferation has led characterization bottleneck: many are obligate microcrystals with low symmetry severe radiation sensitivity, interfering the standard techniques single-crystal X-ray diffraction 2,3 electron microdiffraction 4–11 Here we demonstrate small-molecule serial femtosecond crystallography (smSFX) for...
Transmission electron microscopy (TEM) is essential for determining atomic scale structures in structural biology and materials science. In biology, three-dimensional of proteins are routinely determined from thousands identical particles using phase-contrast TEM. science, complex nanomaterials have been tomography (AET). However, neither these methods can determine the structure heterogeneous containing light elements. Here, we perform ptychographic 34.5 million diffraction patterns to...
Silver metal exposed to the atmosphere corrodes and becomes tarnished as a result of oxidation precipitation an insoluble salt. Tarnish has so poor reputation that word itself connotes corruption disrespectability; however, tarnishing is facile synthetic approach for preparing thin metal-sulfide films on silver or copper might be exploited prepare more elaborate materials with desirable optoelectronic properties. In this work, we luminescent semiconducting mithrene, metal–organic...
Chemical systems may be maintained far from equilibrium by sequestering otherwise reactive species into different microenvironments. It remains a significant challenge to control the amount of chemical energy stored in such and utilize it on demand perform useful work. Here, we show that redox-active molecules compartmentalized multiphasic structured-liquid devices can charged discharged power load an external circuit. The two liquid phases these feature charge-complementary polyelectrolytes...
Fine control over material synthesis on the nanoscale can facilitate stabilization of competing crystalline structures. Here, we demonstrate how carbon nanotube reaction vessels be used to selectively create one-dimensional TaTe3 chains or two-dimensional TaTe2 nanoribbons with exquisite chain number nanoribbon thickness and width. Transmission electron microscopy scanning transmission reveal detailed atomic structure encapsulated materials. Complex superstructures such as multichain...
Abstract The engineering of atomically-precise nanopores in two-dimensional materials presents exciting opportunities for both fundamental science studies as well applications energy, DNA sequencing, and quantum information technologies. exceptional chemical thermal stability hexagonal boron nitride (h-BN) suggest that exposed h-BN will retain their atomic structure even when subjected to extended periods time gas or liquid environments. Here we employ transmission electron microscopy...
Crystalline metal–organic chalcogenolate assemblies are a class of semiconducting hybrid nanomaterials that consist well-defined arrays nanostructured inorganic coordination polymers with supramolecular lattice organic ligands. Growing crystals periodic chalcogenolates at biphasic liquid–liquid interfaces has been used to prepare materials for potential applications in sensing, catalysis, mechanochemistry, light-emitting devices, and photovoltaics. However, distinct lack systematic framework...
Abstract Rigid, solid‐state components represent the current paradigm for electronic systems, but they lack post‐production reconfigurability and pose ever‐increasing challenges to efficient end‐of‐life recycling. Liquid electronics may overcome these limitations by offering flexible in‐the‐field redesign separation at via simple liquid phase chemistries. Up now, preliminary work on has focused metal components, devices still require an encapsulating polymer typically use alloys of rare...
Abstract The advance of printed electronics is significantly bolstered by the development liquid‐state that overcome inherent limitations in flexibility and reconfigurability solid‐state electronics. By integrating biocompatibility conductivity sulfonated polyaniline (S‐PANI) phytic acid (PA) with structured liquids, highly conductive all‐liquid threads are developed. dense packing overlap PA/S‐PANI complexes at an oil/water interface promotes in‐plane electron transport, standard four‐point...
Metal–organic chalcogenolate assemblies have attracted recent interest as ensemble nanomaterials that contain one- or two-dimensional inorganic nanostructures in a periodic array with supramolecular isolation provided by an associated organic ligand lattice. Biphasic immiscible synthesis at liquid–liquid interfaces is convenient way to grow crystalline d10 metal–organic assemblies. However, there has been little systematic study of the role temperature on nucleation, growth, and stability...
Metal chalcogenide compounds have attracted interest as materials for next-generation semiconductors, catalysts, and device architectures. Hybrid containing both a metal architecture supporting organic lattice combine the interesting structural electronic properties of material class with configurable hybrid component that can lead to wide range tailorable materials. However, many methods available preparing inorganic coordination polymers in this require specialized solution-phase chemical...
Abstract It remains a challenge to produce soft robots that can mimic the responsive adaptability of living organisms. Rather than fabricating from bulk hydrogels,hydrogels are integrated into interfacial assembly aqueous two‐phase systems generate ultra‐soft and elastic all‐aqueous aquabots exhibit adaptability, shrink on demand have electrically conductive functions. The adaptive functions provide new platform develop minimally invasive surgical devices, targeted drug delivery systems,...
Reversibly altering the physical structure of a material on-demand can lead to direct manipulation its electronic properties. In this work localized electron beam is used switch regions nanotube-encapsulated HfTe${}_{2}$ nanoribbons between metallic 1T phase and previously experimentally inaccessible semiconducting 1H phase. The change observed in-situ in high-resolution transmission microscope. Complementary theoretical studies provide details each energetics.
We report the selective removal of perchlorate from water by a cationic coordination polymer in highest observed capacity and rate to date. Silver bipyridine acetate [Ag(4,4′-bipy)+][CH3CO2–]·6H2O (bipy = bipyridine) is easily synthesized under ambient conditions (60 min with 99.1% yield). The material releases its environmentally benign anions upon uptake 99.9% mol/mol completion Millipore water. Actual contaminated industrial an underground plume (53 ppm initial concentration) was treated...
An in-depth study of the class cationic materials [Ag(4,4′-bipy)+][X–] (where X– = CH3CO2–, NO3–, BF4–, ClO4–, and MnO4–) has led to key insights on relationship between anion hydration energy, material structure, solubility, stability. Since these show promise for their potential as water remediation tools, understanding properties in detail is significant importance. The structure starting ending main driving force behind resultant stability solubility can be successfully used predict ion...
Transmission electron microscopy (TEM) is a potent technique for the determination of three-dimensional atomic scale structure samples in structural biology and materials science. In biology, structures proteins are routinely determined using phase-contrast single-particle cryo-electron from thousands identical proteins, reconstructions have reached resolution specific proteins. science, complex nanomaterials been combination annular dark field (ADF) scanning transmission microscopic (STEM)...