2026-10-14T14:39:20Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34021312 2026-09-29T05:06:32Z category_1 category_146 category_915 category_14 category_873 category_69 portal_63 item_type_6 month_year_09_2026

Experimental Development of a Radiative Thermal Memristor Jose Abraham Chan Espinoza (25135333) Irving Alonzo-Zapata (22797430) Ruben Medina Esquivel (25135336) Fernando Cervantes-Alvarez (7435679) Adriana Paola Franco Bacca (25135339) Monica Monserrat Martinez-Garcia (25135342) Bharathi Rajeswaran (3986243) Frédéric Dumas-Bouchiat (3396173) Corinne Champeaux (22797433) Jose Ordonez-Miranda (7435670) Mohamed Chaker (1611964) Juan Jose Alvarado-Gil (7435682) Biophysics Space Science Physical Sciences not elsewhere classified Molecular Biology Chemical Sciences not elsewhere classified Inorganic Chemistry terminal device exploits purely radiative configuration neuromorphic networks analogous frequency sinusoidal modulation shaped lissajous curve radiative thermal memristor dependent thermal memristance contactless thermal memristor film exchanging heat 5 k around 2 </ sub 0 </ sub thermal neurons thermal memories thermal hysteresis temperature around characteristic curve 7 k states defined results demonstrate multiple cycles metallic phases mean temperature hysteresis width fundamental element flux sensor field radiation experimental realization experimental development emissivity contrast electrical counterparts >< sub We report the experimental realization of a radiative thermal memristor made of a 200-nm-thick VO₂ film exchanging heat by far-field radiation with a heat-flux sensor. This two-terminal device exploits the metal–insulator transition and thermal hysteresis of VO₂, exhibiting large emissivity variations and a hysteresis width of 5 K around the mean temperature <i>T</i>₀ = 338.7 K. Under low-frequency sinusoidal modulation of the VO₂ temperature around <i>T</i>₀, we observe a pinched, infinity-shaped Lissajous curve for the heat flux versus temperature difference. From this characteristic curve we extract a history-dependent thermal memristance with clear ON and OFF states defined by the emissivity contrast between its insulating and metallic phases. These memristive states remain robust over multiple cycles, enabling binary information encoding in a purely radiative configuration. Our results demonstrate the operation of a contactless thermal memristor and provide a fundamental element for thermal memories, thermal neurons, and neuromorphic networks analogous to their electrical counterparts. 2026-09-29T00:00:00Z Text Journal contribution 10.1021/acs.nanolett.6c03860.s001 https://figshare.com/articles/journal_contribution/Experimental_Development_of_a_Radiative_Thermal_Memristor/34021312 CC BY-NC 4.0