Dear Colleagues, For the 2025-2026 Kresge Challenge, 21 proposals were received, with $523K total support requested. Below is the list of 13 proposals chosen for support. The total amount of Kresge support provided is $292.5K. PURPOSE PROPOSER(S) AREA(S) 1 M-Tec connect(r) duo-mix 3DCP+ system to upgrade the material preparation and pumping stage of Purdue University's existing robotic-arm-based 3D concrete printing (3DCP) platform Pablo Zavattieri, Jan Olek, Sogand Hasanzadeh, Jeff Youngblood MAT, CON 2 XGRIDS L2Pro 3D Gaussian Splatting (3DGS) Scanner Jinha Jung, Ayman Habib, Ayesha Shah, Hubo Cai,Phillip Dunston, Ming Qu, Nusrat Jung, Sogand Hasanzadeh, Songlin Fei GEM, CON, ARC 3 Portable Spectroradiometer for Proximal Sensing of Reflectance in Aquatic and Terrestrial Environments Melba Crawford, Cary Troy, George Zhou, Jinha Jung GEM, HYD, ENV 4 Lumencor Spectra III Light Source + Fluorescence Components + Software George Zhou, Amisha Shah, Chip Blatchley, Inez Hua, Nadezhda N Zyaykina, Larry Nies, Andrew Whelton, Melba Crawford, Cary Troy, Ming Qu ENV, GEM, HYD, ARC 5 Shimadzu (model number: LC- 2070C), a high-performance liquid chromatography (HPLC) analytical instrument + computer to run using associated software Amisha Shah, Bob Jacko, Chip Blatchley, George Zhou, Larry Nies, Inez Hua ENV 6 A handheld spectrophotometer (Gigahertz CSS-45), a prototype low-cost mobile spectrophotometer (nanolambda), and a luminance spot meter (Konica Minolta CS 150) Thanos Tzempelikos, Sam Labi ARC, TRA 7 Chlorophyll and Nitrate Sensors for Water Quality Measurements Cary Troy, Melba Crawford, George Zhou, Rao Govindaraju HYD, GEM, ENV 8 For manufacturer-level service & maintenance of the IONICON PTR-TOF-MS (proton transfer reaction time-of-flight mass spectrometer) Nusrat Jung ARC 9 Expanding Experimental Methods Course Equipment (DAQ, Sensor interface, strain sensors, supplies for 10 test specimens) Arun Prakash, Ayhan Irfanoglu, Shirley Dyke STR 10 BX-53 (Evident Scientific), upright optical microscope to conduct fundamental research on steel, concrete and related materials Robert Connor, Amit Varma, Akanshu Sharma, Jungil Seo, Shivam Sharma, Aditya Jhunjhunwala STR 11 A refrigerated water circulator to be operated in conjunction with an existing solar simulator instrument Amisha Shah, Bob Jacko, Chip Blatchley, George Zhou, Larry Nies, Andrew Whelton, Inez Hua ENV 12 A walk-in fume hood to house the infraTest Asphalt Analyzer, which is used to extract asphalt binder from hot-mix asphalt, using a chlorinated solvent, trichloroethylene (TCE) Ayesha Shah, John Haddock, Jan Olek, Pablo Iglesias Orosa MAT 13 One year subscription to the software PLAXIS 3D WorkSuite Academic SELECT Antonio Bobet, Arun Prakash GEO, STR Sincerely, Ayhan Ayhan Irfanoglu Professor and Associate Head of Civil Engineering Lyles School of Civil and Construction Engineering ayhan@purdue.edu<mailto:ayhan@purdue.edu> | HAMP 4117 | x6-8270