Understand the material.
Document the method.
raymsm.com is an educational publication for students and researchers working with materials characterisation, nanoscience, environmental remediation, and small scientific software tools. Every note is written to make a practical laboratory or analysis decision easier to understand and reproduce.
Explore seven practical categories
Start with a focused topic, then follow internal links into authored articles, documented tools, and related research notes.
New across the knowledge hub
Manually reviewed explanations with tables of contents, author expertise, FAQs, and related reading.
A privacy-conscious local AI workflow for reviewing research literature
Use retrieval and verification checkpoints without treating generated summaries as evidence.
Read article →An offline-first Android app checklist for small utility products
Design around a clear privacy boundary, resilient file states, and a support-ready release path.
Read article →A simple traceability checklist for materials research data
Keep a defensible path from sample label and raw export to figure and conclusion.
Read article →Practical notes for better experiments
Original explainers connecting laboratory observations, characterisation choices, and reproducible software workflows.
Black titania: why defect engineering changes photocatalysis
How oxygen vacancies, visible-light response, and careful controls separate useful defect engineering from a dramatic colour change.
Read article →A reproducible XRD workflow before phase identification
Preserve raw exports, inspect the trace, process conservatively, and document parameters before assigning phases.
Read guide →Why small local-first tools matter in the laboratory
Focused software can protect unpublished data and make the path from instrument export to defensible result easier to audit.
Read article →From the lab notebook
Accessible context for ongoing work in photocatalysis, thermal transport, and high-entropy materials.
Defect-engineered materials and environmental remediation
Explore the reasoning behind catalyst design, measurement controls, and interpretable claims.
Browse research insights →Characterisation guides built around traceability
Step-by-step notes for turning raw measurements into reviewable analysis without hiding decisions.
Browse practical guides →Research software as part of the experimental method
Use local-first tools to remove repetition while keeping assumptions visible and outputs inspectable.
Browse all articles →Tools with context, not black boxes
Each tool guide explains the workflow, assumptions, and privacy boundary before linking to an interactive utility or source repository.
Smart Image & PDF Compress
Understand offline document compression, format conversion, quality controls, and when local processing matters.
Read tool guide →XRD phase-analysis workflow
Prepare diffraction data responsibly before using scripts or web utilities for plotting and comparison.
Read tool guide →Band-gap estimation workflow
Review the assumptions behind optical band-gap plots before turning a reflectance export into a number.
Read tool guide →Written by a researcher who builds tools
Mousom Roy is a materials-science researcher working across nanoscience, photocatalysis, thermoelectric materials, and reproducible analysis software. The site separates manually reviewed educational content from interactive utilities.
Content before monetization
Educational pages are written and reviewed manually. Utility pages, contact pages, error screens, and unfinished prototypes do not load AdSense code. Tool pages provide explanatory HTML before any launch link.