Topological pumping allows waves to navigate a sample undisturbed by disorders and defects. We demonstrate this phenomenon with elastic surface waves by strategically patterning an elastic surface to create a synthetic dimension. The surface is decorated with arrays of resonating pillars that are connected by spatially slow-varying coupling bridges and support eigenmodes located below the sound cone. We establish a connection between the collective dynamics of the pillars and that of electrons in a magnetic field by developing a tight-binding model and a WKB (Wentzel-Kramers-Brillouin) analysis. This enables us to predict the topological pumping pattern, which we validate through numerical and experimental steering of waves from one edge to the other. Furthermore, we observe the immune nature of the topologically pumped surface waves to disorder and defects. The combination of surface patterning and WKB analysis provides a versatile platform for controlling surface waves and exploring topological matter in higher dimensions.

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Mucormycosis is a rare form of angioinvasive, rapidly progressive and lethal opportunistic fungal infection caused by Mucorales. 1,2 Due to the increase in predisposing factors in parallel with medical technological advances, the incidence of mucormycosis has increased significantly, especially in the wake of the second wave of the COVID-19 pandemic, which brought worldwide attention to this deadly yet neglected disease. 3,4 Although Rhizopus arrhizus is the most common causative agent of mucormycosis worldwide, Apophysomyces complex ranks second in the incidence of Mucorales infections in India. 5,6 Molecular phylogenetic studies in recent years have shown that the Apophysomyces complex includes five pathogenic species, namely Apophysomyces elegans, Apophysomyces ossiformis, Apophysomyces trapeziformis, Apophysomyces variabilis and Apophysomyces mexicanus. 7-11 A. variabilis was the most common causative agent of cutaneous mucormycosis. 12 Infections with A. variabilis have been reported