Zhenqi Shi

ORCID: 0000-0001-7215-4920
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About
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Research Areas
  • Spectroscopy and Chemometric Analyses
  • Semiconductor materials and devices
  • Semiconductor materials and interfaces
  • Spectroscopy Techniques in Biomedical and Chemical Research
  • Silicon and Solar Cell Technologies
  • Integrated Circuits and Semiconductor Failure Analysis
  • Ferroelectric and Piezoelectric Materials
  • Crystallization and Solubility Studies
  • Semiconductor Quantum Structures and Devices
  • Fault Detection and Control Systems
  • Electronic and Structural Properties of Oxides
  • Analytical Chemistry and Chromatography
  • Drug Solubulity and Delivery Systems
  • Copper Interconnects and Reliability
  • Optical Imaging and Spectroscopy Techniques
  • Thin-Film Transistor Technologies
  • Dielectric materials and actuators
  • Pesticide Residue Analysis and Safety
  • Nanowire Synthesis and Applications
  • Silicon Nanostructures and Photoluminescence
  • Surface and Thin Film Phenomena
  • Analytical Methods in Pharmaceuticals
  • Advanced Chemical Sensor Technologies
  • Injection Molding Process and Properties
  • Electrical and Thermal Properties of Materials

Southwest University of Science and Technology
2019-2023

Shandong University
2022-2023

Jiangsu University
2022

Eli Lilly (United States)
2012-2021

Qingdao University
2021

Duquesne University
2006-2013

University at Buffalo, State University of New York
1990-2003

State University of New York
2002

Jensen Hughes (United States)
1996-1998

Neocera (United States)
1995

A near-infrared (NIR) calibration was developed using an efficient offline approach to enable a quantitative partial least-squares (PLS) chemometric model measure and monitor the concentration of active pharmaceutical ingredients (API) in powder blends feed frame (FF) tablet press. The leveraged "feed table," which designed mimic full process from NIR measurement perspective, thereby facilitating more robust by allowing sources variability be included minimizing consumption API other raw...

10.1021/acs.analchem.7b01907 article EN Analytical Chemistry 2017-07-31

Reflectance spectroscopy is an excellent candidate for process analytical technology (PAT) applications in continuous manufacturing of pharmaceutical tablets. Spectroscopic methods provide a real-time, nondestructive measurement the active ingredient (API) concentration order to ensure product quality and uniformity. Of particular challenge powder blends with low drug loads (<5% w/w) where signal-to-noise and, turn, precision limit ability method. We evaluate both near-infrared (NIR) Raman...

10.1021/acs.analchem.8b05002 article EN Analytical Chemistry 2019-05-29

Ultrahigh barrier height (φB=0.96 eV) Schottky contacts to n-InP, without an intentionally grown interficial oxide, were formed using metal deposition on a substrate cooled as low 77 K [low temperature (LT)]. φB = 0.46–0.52 eV for diodes deposited at room (RT=300 K) agree well with previously published results, and give ideality factor near unity. For the LT=77 K, leakage current density (J0) was reduced by more than 6–7 orders of magnitude respect RT diodes. The LT increased from 0.48 0.96...

10.1063/1.105458 article EN Applied Physics Letters 1991-07-22

10.1016/j.mechmachtheory.2022.104848 article EN Mechanism and Machine Theory 2022-03-24

The Extended Iterative Optimization Technology (EIOT) method is proposed as an extension to Muteki's [I&amp;ECR 2013;52(35):12258–12268] address deviations from Beer–Lambert's law in powders. new estimates the apparent spectrum for pure species, rather than using measured and augments with a bilinear term capture signature strength of nonchemical interferences. has exhibited acceptable performance spite lean data set estimate its parameters. provides robust coherent within physical...

10.1002/aic.16417 article EN AIChE Journal 2018-09-22

Epitaxial Ba1−xSrxTiO3(BST)/YBa2Cu3O7−x heterostructures with superior electrical and dielectric properties have been fabricated by plasma-enhanced metalorganic chemical vapor deposition (PE-MOCVD). Data of x-ray diffraction high resolution transmission electron microscopy showed that 〈100〉 oriented Ba1−xSrxTiO3 layers were epitaxially deposited on epitaxial (001) YBa2Cu3O7−x layers. The leakage current density through the films was about 10−7 A/cm2 at 2 V (about 2×105 V/cm) operation....

10.1063/1.111332 article EN Applied Physics Letters 1994-06-06

The paper explores scattering orthogonalization as a preprocessing technique to reduce physical interference and maintain chemical information in near-infrared (NIR) spectra of pharmaceutical tablets. Samples used this study were tablets compressed at five compression forces; they composed theophylline, lactose, microcrystalline cellulose (PH200). NIR orthogonalized against the reduced coefficients (representative scattering), concentrations all constituents predicted. robustness predictions...

10.1021/ac802105v article EN Analytical Chemistry 2009-01-22

This study investigated the added value of combining both near-infrared (NIR) and Raman spectroscopy into a single NIRaman Combi Fiber Probe for in-line blend potency determination in feed frame rotary tablet press. A five-component platform formulation was used, containing acetylsalicylic acid as Active Pharmaceutical Ingredient (API). Calibration models 1 5%

10.1021/acs.analchem.4c01134 article EN Analytical Chemistry 2024-06-18
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