diff --git a/debye_bec/file_writer/__init__.py b/debye_bec/file_writer/__init__.py
index e69de29..62f8ddd 100644
--- a/debye_bec/file_writer/__init__.py
+++ b/debye_bec/file_writer/__init__.py
@@ -0,0 +1 @@
+from .debye_nexus_structure import DebyeNexusStructure
\ No newline at end of file
diff --git a/debye_bec/file_writer/debye_nexus_structure.py b/debye_bec/file_writer/debye_nexus_structure.py
new file mode 100644
index 0000000..351fab5
--- /dev/null
+++ b/debye_bec/file_writer/debye_nexus_structure.py
@@ -0,0 +1,26 @@
+from bec_server.file_writer.default_writer import DefaultFormat
+
+class DebyeNexusStructure(DefaultFormat):
+    """ Nexus Structure for Debye"""
+
+    def format(self) -> None:
+        """ Specify the file format for the file writer."""
+
+        entry = self.storage.create_group(name="entry")
+        entry.attrs["NX_class"] = "NXentry"
+        instrument = entry.create_group(name="instrument")
+        instrument.attrs["NX_class"] = "NXinstrument"
+        monochromator = instrument.create_group(name="monochromator")
+        # monochromator.attrs["NX_class"] = "NXmonochromator" -> to be checked
+        crystal = monochromator.create_group(name="crystal")
+
+        ###################
+        ## mo1_bragg specific information
+        ###################
+
+        # Logic if device exist
+        if "mo_trx" in self.device_manager.devices:
+            # Create a softlink
+            chemical_formular = crystal.create_soft_link(name="chemical_formular", target="/entry/collection/devices/mo_trx/mo_trx")
+            chemical_formular.attrs["NX_class"] = "NXdata"
+            
\ No newline at end of file