Alex loved working with optical illusions and he frequently used gradients of colors as some people react strongly to them and the mind's attempt to smooth the image would yield a sense of motion within it. You will see the culmination of this in the Spiral Effect that will be presented later in the gallery.
This painting was done in a stairwell to get an added sense of drama and movement as it appears to me that he intended that it be viewed while you are moving as well.
Dancers
Dancers (alternate view)
Landscape with Gradients
The paintings in this gallery are almost entirely from photographs of his wall art in the Biology Department at the University of Cincinnati, He also did many paintings on canvas or whatever else he could find to explore the gradient effect, frequently in landscapes similar to this one.
Machine
So you were thinking steampunk is something new, perhaps. There's no telling what kind of steam is powering this machine and you're invited to determine its function yourself.
Machine (alternate view)
Illusions I
Rhodopsin
Distance
Flowers with Gradients
Flowers with Gradients (Close-up)
Flowers with Gradients (Closer-up)
Woman Ascending
Woman Ascending (Close-up)
Greenhouse
Painted at the end of a hallway, this one gives the impression that one is walking into a greenhouse. However, the photo-realistic style is highly-atypical so this may not be his work. He wasn't the only artist / scientist or scientist / artist who enjoyed expression through wall art in the Biology Department although he definitely started it.
The Village
We can leave it to the Art Department to argue whether pointillism is an illusion but it fascinated Alex and he had a great many colleagues, particularly among the graduate students in the Art Department, who could argue quite passionately about such things.
This is from my personal collection and is now with the family in Cincinnati. This gave very much of a feeling of Vincent's "Starry Night" to me but where this village might be or what it may represent are left to you to decide.