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Property and Equipment - Schedule of Property and Equipment (Details) - EUR (€)
Dec. 31, 2025
Dec. 31, 2024
Schedule of Property and Equipment [Line Items]    
Property and equipment, gross € 287,441 € 320,677
Accumulated depreciation (72,475) (46,815)
Property and equipment, net 214,966 273,862
Furniture [Member]    
Schedule of Property and Equipment [Line Items]    
Property and equipment, gross 23,873 65,118
Laboratory Photovoltaic Installation [Member]    
Schedule of Property and Equipment [Line Items]    
Property and equipment, gross 238,057 232,806
Tools and Machinery [Member]    
Schedule of Property and Equipment [Line Items]    
Property and equipment, gross 14,822 7,838
Computer [Member]    
Schedule of Property and Equipment [Line Items]    
Property and equipment, gross € 10,689 € 14,915