Hosea M. Nelson

Hosea M. Nelson is a Professor of Chemistry at the California Institute of Technology (Caltech), appointed in 2021 after serving as a Visiting Associate. He holds a B.S. from the University of California, Berkeley (2005) and a Ph.D. from Caltech (2013).

Education

• B.S., University of California, Berkeley, 2005
• Ph.D., California Institute of Technology, 2013

Research Focus

The Nelson Lab operates at the intersection of organic synthesis and structural chemistry, driving innovation through two synergistic pillars:

• Synthesis & Catalysis: Employs data science, computational chemistry, and physical organic methodologies to dissect reaction mechanisms and transient intermediates, enabling breakthroughs in quaternary center construction and main group catalysis.
• Structural Chemistry: Pioneers microcrystal electron diffraction (MicroED) integrated with automation, machine learning, and TEM imaging to solve atomic-resolution structures of complex molecules—from nanocarbons to fungal metabolites—democratizing advanced characterization.

Publication Trends

Analysis of 10 recent publications (2023-2025) reveals Nelson's leadership in merging electron diffraction with synthetic chemistry. His work spans solvatomorph characterization, nanocarbon topology, natural product discovery, and enzyme engineering, consistently leveraging MicroED to solve previously intractable structural problems. The research demonstrates a strategic shift toward data-driven methodologies, with machine learning and automation enabling high-throughput structural analysis across diverse material classes.

Scientific Awards

No specific awards or fellowships were documented in the source materials.

Advising & Research Infrastructure

The Nelson Lab maintains active graduate student recruitment and postdoctoral programs, as evidenced by dedicated "Grad Students" and "Postdocs & Staff Scientists" sections. While specific grant details are unreported, the lab's multidisciplinary scope—spanning organic synthesis, structural biology, and computational chemistry—suggests substantial funding for instrumentation (TEMs, microfluidics) and personnel. Alumni development indicates successful mentorship transitioning researchers to independent careers.

Laboratory Ecosystem

Operating within Caltech's chemistry division, the Nelson Lab functions as a vertically integrated research unit where synthetic chemists collaborate with structural biologists and data scientists. The team utilizes custom automation platforms for MicroED data collection, coupled with machine learning pipelines for structure solution. This infrastructure directly supports the lab's mission to transform electron microscopy into routine, accessible characterization tools for global materials research.