Barry Lai
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View article: Integrating computed tomography and biopsy images to predict chemotherapy response in gastric cancer
Integrating computed tomography and biopsy images to predict chemotherapy response in gastric cancer Open
Aims To predict pathological complete response to neoadjuvant chemotherapy in advanced gastric cancer by integrating multimodal radiomic and pathomic data. Methods Eligible patients with advanced gastric cancer underwent neoadjuvant chemot…
Selenium Migration and Local Structures in Cu‐Doped CdSeTe Solar Cells after Aging Open
Selenium grading plays a critical role in state‐of‐the‐art Cadmium Telluride photovoltaic cells by enhancing long‐wavelength absorption and extending minority carrier lifetimes —key to enabling the current performance record of 23.08%. How…
Multifunctional bending magnet beamline with a capillary optic for X-ray fluorescence studies of metals in tissue sections Open
Scanning fluorescence X-ray microscopy lets one non-destructively and quantitatively map the distribution of most biologically-important metals in cells and tissues. For studies on large-scale tissues and organs, a spatial resolution of se…
X-ray fluorescence microscopy and X-ray absorption spectroscopy reveal the stability of the plecstatin-1 scaffold in biological model systems: comparison of Ru, Os and Ir analogues Open
Ligand exchange reactions often impact our understanding of metal-based cancer drug prototype actions. Here we make in situ measurements of metal distribution and speciation to show that these are limited for plecstatin analogues.
Optimized Driving Scheme for Three-Color Electrophoretic Displays Based on the Elimination of Red Ghost Images Open
Three-color electrophoretic display (EPD) is emerging as a display technology due to its extremely low energy consumption and excellent reflective properties. However, in the process of black and white color image transition, due to the di…
View article: Local halide heterogeneity drives surface wrinkling in mixed-halide wide-bandgap perovskites
Local halide heterogeneity drives surface wrinkling in mixed-halide wide-bandgap perovskites Open
Compositional heterogeneity in wide-bandgap (1.8 − 2.1 eV) mixed-halide perovskites is a key bottleneck in the processing of high-quality solution-processed thin films, and prevents their application in efficient multijunction solar cells.…
View article: Manganese transporter SLC30A10 and iron transporters SLC40A1 and SLC11A2 impact dietary manganese absorption
Manganese transporter SLC30A10 and iron transporters SLC40A1 and SLC11A2 impact dietary manganese absorption Open
SLC30A10 deficiency is a disease of severe manganese excess attributed to loss of SLC30A10-dependent manganese excretion via the gastrointestinal tract. Patients develop dystonia, cirrhosis, and polycythemia. They are treated with chelator…
View article: Bromine Incorporation Affects Phase Transformations and Thermal Stability of Lead Halide Perovskites
Bromine Incorporation Affects Phase Transformations and Thermal Stability of Lead Halide Perovskites Open
Mixed-cation and mixed-halide lead halide perovskites show great potential for their application in photovoltaics. Many of the high-performance compositions are made of cesium, formamidinium, lead, iodine, and bromine. However, incorporati…
Iron dissolution from Patagonian dust in the Southern Ocean: under present and future conditions Open
Although the input of desert dust as a key source of trace metals in the Southern Ocean (SO) has been previously studied, the dissolution process of metals in surface waters, particularly iron (Fe), remain poorly understood. Given the cruc…
High detectivity Ge photodetector at 940 nm achieved by growing strained-Ge with a top Si stressor Open
We have developed a self-powered near-infrared photodetector (PD) with high detectivity using a tensile strained Ge layer capped with a thick Si layer. The Si layer acts as a stressor and maintains the strain of Ge with minimal dislocation…
Histatin-5 interacts with cellular copper to promote antifungal activity against <i>Candida albicans</i> Open
Histatin-5 (Hist-5) is an antimicrobial peptide found in human saliva that functions to defend the oral cavity from microbial infections, such as those caused by the fungal pathogen Candida albicans (C. albicans). Hist-5 can bind Cu in mul…
View article: Distribution of Copper States, Phases, and Defects across the Depth of a Cu-Doped CdTe Solar Cell
Distribution of Copper States, Phases, and Defects across the Depth of a Cu-Doped CdTe Solar Cell Open
Copper has been used as a p-type dopant in cadmium telluride (CdTe) for decades. However, the density of Cu atoms in the finished device is much higher than that of holes, which means that most Cu atoms are not activated as acceptors durin…
View article: Synergistic Role of Water and Oxygen Leads to Degradation in Formamidinium-Based Halide Perovskites
Synergistic Role of Water and Oxygen Leads to Degradation in Formamidinium-Based Halide Perovskites Open
Mixed-cation metal halide perovskites have shown remarkable progress in photovoltaic applications with high power conversion efficiencies. However, to achieve large-scale deployment of this technology, efficiencies must be complemented by …
Enhanced microprobe endstation for high-throughput and versatile sample analysis at APS 2-ID Open
The new APS-U 2-ID Microprobe instrument will provide high-throughput and versatile sample analysis capabilities and will bridge the gap to higher resolution APS-U nanoprobes. Available techniques include XRF microscopy, tomography, µXANES…
Interface Reconstruction from Ruddlesden–Popper Structures Impacts Stability in Lead Halide Perovskite Solar Cells Open
The impact of the bulky‐cation‐modified interfaces on halide perovskite solar cell stability is underexplored. In this work, the thermal instability of the bulky‐cation interface layers used in the state‐of‐the‐art solar cells is demonstra…
High-resolution ptychographic imaging enabled by high-speed multi-pass scanning Open
As a coherent diffraction imaging technique, ptychography provides high-spatial resolution beyond Rayleigh’s criterion of the focusing optics, but it is also sensitively affected by the decoherence coming from the spatial and temporal vari…
Development of an operando characterization stage for multi-modal synchrotron x-ray experiments Open
It is widely accepted that micro- and nanoscale inhomogeneities govern the performance of many thin-film solar cell absorbers. These inhomogeneities yield material properties (e.g., composition, structure, and charge collection) that are c…
Formation of a Secondary Phase in Thermally Evaporated MAPbI<sub>3</sub> and Its Effects on Solar Cell Performance Open
Thermal evaporation is a promising deposition technique to scale up perovskite solar cells (PSCs) to large areas, but the lack of understanding of the mechanisms that lead to high-quality evaporated methylammonium lead triiodide (MAPbI3) f…
PbI <sub>2</sub> Nanocrystal Growth by Atomic Layer Deposition from Pb(tmhd) <sub>2</sub> and HI Open
Atomic layer deposition (ALD) allows for fine control over the thickness, stoichiometry, and structural defects of materials. ALD provides a suitable route to deposit lead halides, which can further be converted to perovskites for photovol…
PbI2 nanocrystal growth by atomic layer deposition of Pb(tmhd)2 and HI Open
Atomic layer deposition (ALD) allows for a great level of control over the thickness and stoichiometry of materials. ALD provides a suitable route to deposit lead halides, which can further be converted to perovskite for photovoltaics, pho…
Achieving high spatial resolution in a large field-of-view using lensless x-ray imaging Open
X-ray ptychography, a powerful scanning lensless imaging technique, has become attractive for nondestructively imaging internal structures at nanoscale. Stage positioning overhead in conventional step-scan ptychography is one of the limiti…