From the workbench to the conference floor.
Plots from humidity-sensing trials, droplets seen from the side, and the people and presentations around a 2017 scientific meeting. The instruments and the questions have changed over the years; the habit of keeping the original record has not.
When humidity changes an electrical measurement
Four sets of uploaded titanium dioxide (TiO₂) trial plots trace capacitance and resistance against relative humidity. The curves show pronounced shifts as humidity rises, especially in the thick-film capacitance records at 90%. The original figures are retained rather than smoothed into a single persuasive line. The filenames distinguish “Neutral” and “Thick” TiO₂, but do not provide fabrication details, electrode geometry, replicate statistics or an independently checked sensor-calibration procedure.
Neutral TiO₂ · Trial 1
Neutral TiO₂ · Trial 2
Thick TiO₂ · Trial 2
Thick TiO₂ · Trial 3
The resistance plots retain their original axis label, mOhm; this notation requires checking against the laboratory record before unit conversion or quantitative comparison. The large increase in thick-film capacitance at 90% humidity may warrant further examination, but these plots alone cannot establish whether it reflects bulk dielectric response, surface conduction, a measurement-range transition or another effect. No regression, error bars or performance claim have been invented.
Three views of a drop
The supplied black-and-white images show a liquid dispenser and side-on droplet profiles at a surface. Those outlines are useful for thinking about wetting and contact geometry. The image names do not establish liquid composition, surface treatment, advancing or receding contact angle, or a numerical result.
Five seconds in the laboratory
This short vertical clip shows a researcher seated beside laboratory equipment. It is a personal moving-image record of a working environment; there is no experiment, result or individual identity assigned beyond what the footage establishes.
Archival video / 5.7 seconds / visual record, not a recorded experiment
The chemistry around the poster
Conference photographs can be rather revealing when kept alongside the research. The posters concerned natural dyes for anion sensing and the encapsulation of polycyclic aromatic hydrocarbons in block copolymer micelles. Other photographs show the Qatar University delegation, the chemistry-lesson record attempt and the conversations that went on away from the presentation boards. These belong to the wider history of the student chemistry community, not merely to a list of attendances.
