Wildcard search in field values

I need to create a token based search query for an index which has multiple valued field.
Details of the index are added below.
Is it possible to search the material_values field to return only the values starting with say "Po"- so that it only returns Porcelain & Pottery?

Request - GET /0/id/37908?_source=properties.material_values
Response - {
"_index": "0",
"_type": "id",
"_id": "37908",
"_version": 1,
"found": true,
"_source": {
"properties": [
{
"material_values": [
"Bone",
"Brass",
"Bronze",
"Cast Iron",
"Copper",
"Glass",
"Gold",
"Iron",
"Lead",
"Limestone",
"Marble",
"Paper",
"Pewter",
"Porcelain",
"Pottery",
"Sandstone",
"Stone",
"Terracota",
"Tin",
"Wood"
]
}
]
}
}

Thanks!